Questions Asked on
March 18, 2013

  1. proprotions

    why did the envelope lose the race with the cardboard box?

    asked by Anonymous
  2. Chemistry

    Solutions of sodium thiosulfate are used to dissolve unexposed AgBr (Ksp = 5.0 10-13) in the developing process for black-and-white film. What mass of AgBr can dissolve in 1.40 L of 0.425 M Na2S2O3? Ag+ reacts with S2O32- to form a complex ion. Ag+(aq) + 2

    asked by Howard
  3. physics

    A spherical bowling ball with mass m = 4.1 kg and radius R = 0.116 m is thrown down the lane with an initial speed of v = 8.9 m/s. The coefficient of kinetic friction between the sliding ball and the ground is ¦Ì = 0.34. Once the ball begins to roll

    asked by JOJO
  4. math/ratios

    There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?

    asked by sam
  5. alg 1

    the length of a rectangular garden is 8 feet longer than the width. The garden is surrounded by a 4-foot sidewalk. the sidewalk has an area of 320 square feet. find the dimensions of the garden. please help

    asked by darlena
  6. Chemistry

    Calculate the pH at the equivalence point for the titration of 0.130M methalamine (CH3NH2) with 0.13M Hcl. The Kb of methyl amine is 5.0x10-4.

    asked by Joe
  7. World History (Ms. Sue)

    What was Lincoln's reasons for not emancipating slaves when the war began? My answer: Lincoln did not believe he had the power under the Constitution to abolish slavery where it already existed. Nor did he want to anger the four slave states that remained

    asked by Anonymous
  8. Cultural Anthropology

    In a band society, who would most likely be responsible for punishing a murderer

    asked by Anna
  9. Algebra

    A bag holds 2 yellow, 1 green, and 2 red marbles. If you were to draw a marble from the bag 150 times, and replace it after each draw, how many yellow marbles would you expect to draw? A.50 B.60 C.30 D.120 I think it is B...?

    asked by Cassie
  10. Algebra

    a and b are positive numbers that satisfy the equation \frac {1}{a} - \frac {1}{b} = \frac {1}{a+b} . Determine the value of \frac {a^6}{b^6} + \frac {b^6} {a^6} .

    asked by Anonymous
  11. Physics

    A test charge of +3.00 10-6 C experiences a downward electrostatic force of 11 N when placed at a certain point in space. What are the magnitude and direction of the electric field at this point?

    asked by Melissa
  12. Algebra

    If you rolled a number cube 100 times, how many times would you expect to get an even number? A.25 B.75 C.50 D.38 I think it is C...?

    asked by Cassie
  13. math

    How do you solve: imgur[dot]com/PlcCL8s [I had to upload cause its impossible to write proper notation here.

    asked by Hasane
  14. algebra

    What is the probability that a month picked at random will have 31 days? A.5/12 B.4/12 C.7/12 D.8/12 I think it is C...?

    asked by Cassie
  15. Englsih II

    Review the poems we have studied in this unit and select the one that appealed to you most. Analyze the poem by answering the following questions. Cite specific lines or phrases from the poem to support your ideas. Be certain to identify your poem by both

    asked by Carlos
  16. Maths-Query

    An NGO is helping the poor people of earthquake hit village by providing medicines. In order to do this they set up a plant to prepare two medicines A and B. There is sufficient raw material available to make 20000 bottles of medicine A and 40000 bottles

    asked by anoynomous
  17. geometry

    in the accompanying diagram, RST is a right triangle, SU is the altitude to hypotenuse RT, RT=16 and RU=7

    asked by Anonymous
  18. Chemistry

    Calculate the molar concentration of uncomplexed Zn2+ (aq) in a solution that contains 0.22 mol of Zn(NH3)4 2+ per liter and 0.3109 M NH3 at equilibrium. Kf for Zn(NH3)4 2+ is 2.9 X 10^9 I started this way... (0.3109 + 4)2/0.22-x)= 2.9 X 10^9

    asked by Felix
  19. Algebra

    There are 5 different cookies in a bag. One of them is your favorite, chocolate chip. What is the probability that you will not get your favorite? A.1/5 B.2/5 C.24/25 D.4/5 I think it is D...?

    asked by Cassie
  20. Math

    Frank has 3 nickels, 5 dimes, and 2 quarters. What is the range, mean, median, and mode of the values of Frank's coins?

    asked by Danny
  21. algebra

    1.You flip a coin 30 times and get heads 11 times, so the chance of getting heads is 11/30. Is this an example of theoretical or experimental probability? theoretical experimental * 2.You have made 3 out of 10 of your last free throws. How many free throws

    asked by Cassie
  22. Algebra

    You roll a pair of number cubes and then flip a coin. Is this an example of independent or dependent events? A.independent B.dependent This is A...right?

    asked by Cassie
  23. Algebra

    A bag has 6 green marbles, 4 red marbles, 5 yellow marbles, and 3 purple marbles. What is the probability of choosing a purple marble? A.1/6 B.6/18 C.3/20 D.1/9 My choice is A

    asked by Cassie
  24. economics

    Bob's lawn mowing service is a profit-maximizing competitive firm. Bob mows lawns for $27.00 each. His total cost each day is $280 , of which $30 is a fixed cost. He mows 10 lawns a day. What can you say about Bob's short-run decision regarding shut-down

    asked by raja
  25. organic chemistry

    when i add methyl salicylate to aqueous sodium hydroxide, immediately a white solid forms... that is sodium salicylate is it?? Since it hasn't been heating under reflux yet.

    asked by Anonymous
  26. science

    a man wishes to swin across a river 600 m wide. If can swim at the rate of 4 km/hr in still water and the river flows at 2 km/hr. Then in what direction must he swim to reach a point exactly opposite to the starting point bnd when will he reach it ?

    asked by Updesh Shah
  27. Chemistry

    A reaction mixture of 4.0 mL of 0.002 M SCN- and 5.0 mL of 0.002 M Fe3+ is diluted to 10.0 mL with 0.1 M HNO3 to form the blood-red FeNCS2+ complex. The equilibrium molar concentration of the FeNCS2+ determined from a standardization curve is 1.5x10^-4

    asked by Anonymous
  28. math

    A community college has 2,000 students and 50 instructors. Next year the enrollment will be 6,000. How many new instructors should be hired if the college wants to keep the same studentto instructor ratio?

    asked by naomie
  29. Chemistry (reposting)

    In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate

    asked by Felix
  30. Physics

    A bungee jumper (m = 66.00 kg) tied to a 39.00 m cord, leaps off a 69.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What size impulse is exerted on the bungee jumper while the cord stretches?

    asked by Hilary
  31. Physics

    A bungee jumper (m = 66.00 kg) tied to a 39.00 m cord, leaps off a 69.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What size impulse is exerted on the bungee jumper while the cord stretches?

    asked by Hilary
  32. Math

    Need help on the question below. Which number belongs to the set of rational numbers but does not belong to the set of whole numbers? a. -1 b. 0 c. 1 d. 2 Thanks...

    asked by Brandi
  33. physics

    A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circle. Assume that the total energy of the ball-Earth system remains constant. (a) What is the tension in the string at the bottom?

    asked by ahmad
  34. proportions

    an ant that weighs 0.004 oz can lift a bread crumb that weighs 0.2 oz. if a 120-pound person were proportionally as strong as the ant,how much could the person lift?

    asked by Anonymous
  35. stats.

    The GMAT test is required for admission to most graduate programs in business. In a recent year, the GMAT test scores were normally distributed with a mean of 550 and standard deviation of 100. A. Find the first quartile for the distribution of GMAT

    asked by Christina
  36. physics.

    1) A racing car has a mass of 1525 kg. What is its kinetic energy if it has a speed of 35 m/s? * 2-3 Conservation of Momentum 2) A 3.0 kg ball is moving at 3 m/s and strikes a 1.5 kg ball moving at -2 m/s. After the collision, the 1.5 kg ball moves to the

    asked by Isis
  37. college physics

    if a girl pulls on a 15 kg wagon with a constant horizontal force of 35N.Her friend pushes on the wagon in the same direction with a constant horizontal force of 10 N. and there is a friction force of 15 N. I need to draw a diagram of this problem and

    asked by patti
  38. Chem

    What is the specific heat in J/g Celsius for a metal sample with a mass 95.6 g which absorbs 841 J of energy when it's temperature increases from 30.0 degrees Celsius to 98.0 degrees Celsius?

    asked by Mike
  39. Ýndustrial Engineering

    The figure shows the paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 41.00 m, y = 17.02 m, and t = 2.94 s. If the ball was dropped

    asked by Ozgun
  40. algebra

    an object is launched vertically in the air at 29.4 meters per second from 10 meter tall platform . find its maximum height in seconds and in meters ?

    asked by zz
  41. algebra

    an object is launched vertically in the air at 29.4 meters per second from 10 meter tall platform . find its maximum height in seconds and in meters ?

    asked by zz
  42. writing english

    Hi, I need help with a paper I wrote on an analysis of an advertisement. This is the ad i analysed facebook.cm/video/video.php?v=176110229125188 Could someone please tell me the Ethos and Pathos for this ad ? My ethos was - The text embellishes character

    asked by Ying
  43. physics

    a disc of radius 5.70 cm rotates about its axis and a point 1.90 cm from the center of the disc moves 34.5 cm in 12.2 s .calculate the angular velocity of the disc.

    asked by fernando guzman
  44. PHYSICS

    A bottle containing 4 kgof water at a temperature of 15°Cis placed in a refrigerator where the temperature is kept at 2°C.How much heat is transferred from the water to cool it to 2°C?

    asked by B
  45. math

    find the volume of a square pyramid. Round to the nearest tenth(slant height=20 base=13)

    asked by Shay
  46. Chemistry

    What is the pH of a saturated zinc hydroxide solution?

    asked by Julian
  47. math

    Jill Ley took out a loan to pay for her child's education for $60,000. The loan would be repaid at the end of 8 years in one payment with an interest of 6 percent. The total amount Jill has to pay back at the end of the loan is: (Points : 1)

    asked by Laura
  48. 11

    A ball is dropped vertically from height of 30 meters after bounces.The ball reaches a max height to 60% of height of the previous bounce. What are the terms of the sequence. What is the height to the nearest tenth of a meter of the ball after the tenth

    asked by Annie
  49. Chemistry

    A 8.5 x 10^-3 M solution of acetic acid is 4.6% ionized at 25 degree Celsius. in a 8.5 X 10^-4 M solution, the percentage of ionization would be? A.the same B.>4.6% C.

    asked by V
  50. Physics

    A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 81.0°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the

    asked by AM
  51. chem

    Indicate whether the pH increases, decreases, or remains the same when each of the following is added. (CH3NH3)Cl to a solution of CH3NH2 pyridinium nitrate, (C5H5NH)(NO3) to a solution of pyridine, C5H5N sodium formate to a solution of formic acid how do

    asked by hannah
  52. math 140

    There were 610 people at a play. The admission price was $3.00 for adults and $1.00 for children. The admission receipts were $1,250.00. How many adults and children attended?

    asked by betsy
  53. Health

    You've received an invoice for $3000.00 with terms of 3/10, 1/20.n/30. How much will you have to pay if you pay the bill in 12 days.

    asked by Janette
  54. physics

    An aluminum wing on a passenger jet is 38 mlong when its temperature is 23°C.At what temperature would the wing be 2 cm (0.02 m) shorter?

    asked by Brian
  55. maths-surface area

    Cylindrical groove is made in a cylindrical piece of wood of length 17.5cm. The groove is filled with graphite and the cylindrical graphite block is of same length as that of wooden piece. If the diameter of the graphite cylinder is 3mm and outer diameter

    asked by anoynomous
  56. proportions

    a locomotive is 58 ft long and 11 ft wide.a special effects designer makes a model that is 20 in. long. how wide should it be?

    asked by Anonymous
  57. physics

    Why projectiles launched at complimentary angles have the same range?

    asked by JenniferG
  58. English

    hans uses a wheelchair. although he has a ramp to get in his house, he finds it difficult to get his wheelchair chair up the ramp. which modification would make it easier for hans to get in his house? a. increase the length of the ramp b. increase the

    asked by mary
  59. college physics

    If a girl drops a coin into a wishing well. After exactly 5 seconds she hears it splash into the water. How fast was the coin going after 1 second? After 2 seconds? How fast was the coin going when it hit the water? How far down is the water? Could you

    asked by patti
  60. homework

    What is a nouns Reggie bought a computer today at the store for $700.

    asked by fermin Itzep
  61. maths-surface area

    A cone 7dm high and 6 dm in diameter is placed on the ground. Sand is poured over it until conical heap 21 dm high and 33 dm circumference at the bottom is formed. Find how many m^3 of sand is there?

    asked by anoynomous
  62. Chemistry

    At a given Temperature, the elementary reaction AB in the forward direction is first order in A with a rate constant of 3.90*10^-2s^-1. The reverse reaction is first order in B and the rate constant is 8.20*10^-2s^-1. What is the value at equillibrium for

    asked by Christina
  63. physics

    A stone of mass 0.55 kilograms is released and falls to the ground. Measurements show that the stone has a kinetic energy of 9.8 joules at the point of impact with the ground. What is the stone's velocity when it hits the ground?

    asked by Anonymous
  64. Physics

    If a 1.0m crowbar is placed uner a 143 kg rock at a point 20.0cm from the end of the bar, what is the IMA of the crowbar?

    asked by Wanda
  65. Physics

    A 80 kg climber is standing horizontally on a perfectly vertical cliff face. The climber is 1.8 m tall and is attached by a 2 m long rope fastened around their middle to a point on the cliff above them. What is the normal force the cliff face exerts on the

    asked by Stranger
  66. Physics

    A charge of -3.66C is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.0978 m). The charges on the circle are -4.04C at the position due north and +6.20C at the position due east. What is (a) the

    asked by Ashley
  67. statistics

    The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 minutes. What is the standard deviation?

    asked by Bree
  68. math

    a right triangle has an acute angle(theta) suck that cot(theta)=15. find cos(theta)

    asked by brenna
  69. ....

    hans uses a wheelchair. although he has a ramp to get in his house he finds it difficult to get his wheelchair up the ramp. which modification would make it easier for hans to get in his house? a. increase the length of the ram b. increase friction between

    asked by mary
  70. physics

    In an arcade game a 0.099 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it.If the spring has a spring constant of 244 N/m and is compressed from its equilibrium position by 4 cm, find the speed

    asked by Anonymous
  71. World History (Ms. Sue)

    Why was the immediate impact of the emancipation proclamation limited? My answer: The impact was limited because most of the slaves that Lincoln intended to liberate lived in areas distant from the Union troops that could enforce his proclamation?

    asked by Anonymous
  72. probability math

    bill is on the school archery team. the target has a center bull's-eye and two rings around the bull's-eye. the table gives the probabilities of each outcome. what is the probability that bill will get the next arrow in the inner or outer ring?express your

    asked by wayne
  73. Art Ms. Sue please

    1. This applied artist creates the forms of manufactured products. (1 point) graphic designer industrial designer interior designer stage designer 2. This is one task of an industrial designer. (1 point) create nonfunctional products create unattractive

    asked by Delilah
  74. chemistry

    Rank the following 3 compounds in terms of increasing boiling point: CCl4, CH4, CH2Cl2 - Rank the following 3 compounds in terms of increasing boiling point: CF4, CH4, CH2F2 - Water, H2O, is a liquid at room temperature. Hydrogen selenide, H2Se, is a

    asked by adex
  75. chemistry

    a 225.0 g sample of an unknown, silver, pure metal was heated to 95.5 degrees celsius then put into 150.50 g of water at 22.5 degrees celsius. the water was heated by the hot metal to a temperature of 31.4 degrees celsius. what is the specific heat? what

    asked by brittany
  76. Chemistry

    Question 9 Marks: 2 In the reaction: Zn + 2 HCl ZnCl2 + H2 An excess of Zn is reacted with 300.0 g of HCl. How many grams of H2 will be produced?

    asked by Lindt
  77. Stats.

    The average age of a vehicle registered in the United States is 8 years, or 96 months. Assume the standard deviation is 16 months. If a random sample of a group of 48 vehicles is selected find the probability that the mean of the group’s age is between

    asked by Christina
  78. World History (Ms. Sue)

    How did the Emancipation Proclamation change the role of African Americans in the war? My answer: The Emancipation Proclamation delared that African-American men would be able to "be received into the armed services of the United States," which also lead

    asked by Anonymous
  79. physics

    A 7·cm tall candle is placed 125·cm from a lens with a focal length of +25·cm. Note: enter the absolute value of your answers for all distances and heights ... use the signs to determine the type and orientation of the images. a) How far from the lens

    asked by wally
  80. Chemistry

    How many grams ammonium chloride and how many milliliters 3.0 M sodium hydroxide should be added to 200 ml of water and diluted to 500 ml to prepare a buffer of 9.50 with a salt concentration of 0.1 M? Ka=9.24

    asked by ---
  81. Chemistry

    What is the molarity of a salt solution that is made from 31.0 grams of Ca3(P04)2 placed in a volumetric flask and filled to the 2 liter line with distilled water?

    asked by Matt M
  82. jiskha

    Lol, I have a quick question...If you don't mind. Do you hink jiskha will have thier own app one day? It's so tiring, because you need wifi right lol just curious.

    asked by katlyn
  83. English

    1. I am good at computers. 2. I am good with computers. (Are both the same in meaning?) 3. I am good at using computers. 4. I am good with using computers. (Are both the same and grammatical?)

    asked by rfvv
  84. chemistry

    how many grams of Na2SO4 can be produced by the reaction of 250g of NaOH with sufficient H2SO4?

    asked by Marisela
  85. math

    a species of orchid is being studied. The population 'p' at time 't' years after the study started is assumed to be p = 2800ae^0.2t/1 + ae^0.2t where 'a' is a constant. Given tnat there were 300 orchids when the study started. a. show that a =0.12 b. use

    asked by lindsay
  86. physics

    a disc of radius 5.70 cm rotates about its axis and a point 1.90 cm from the center of the disc moves 34.5 cm in 12.2 s .calculate the angular velocity of the disc.

    asked by fernando guzman
  87. english

    Write the pronoun in these sentences. Then write the underlined words,that they replace. " Let us think of a way to clean up litter," said Matt and Lynn. ( the underlined word is Matt and Lynn)

    asked by Robert
  88. statistics

    Suppose we take a random sample of size n from a normal population with variance, σ2 . It can be shown that (n−1)s2/σ2 has a chi-square distribution with n−1 degrees of freedom, where s is the sample variance. Below is a random sample of size 8 drawn

    asked by sandy
  89. math

    The time is 5:15. Is the hour hand closer to the 5 or the 6? Why?

    asked by Anonymous
  90. physics

    A(n) 96.1 g ball is dropped from a height of59.1 cm above a spring of negligible mass.The ball compresses the spring to a maximum displacement of 4.75403 cm.The acceleration of gravity is 9.8m/s^2. Calculate the spring force constant k. Answer in units of

    asked by Anonymous
  91. US History

    I have 3 History question that I am completely stuck on. Please help? Thanks Which answer best describes an important outcome of the Gibbons v. Ogden court case? The case set definitions for navigation and placed state control over all coastal and river

    asked by Kaelyn Rae
  92. language arts Ms. Sue please

    4. "Brer" is dialect for briar. brother. Mister. brawny. 5. What is the main reason to ask questions as you read a story? to describe the characters to summarize the plot to identify the author’s purpose to aid in your comprehension My answers: 4.

    asked by Delilah
  93. Chem

    What is the specific heat in J/g Celsius for a metal sample with a mass 95.6 g which absorbs 841 J of energy when it's temperature increases from 30.0 degrees Celsius to 98.0 degrees Celsius?

    asked by Mike
  94. chem

    Please help me balance this equation: I just can't get it right. Do you have any strategy you use to solve such equation balancing if so please help me. Ba(ClO3)2(aq)+ Na3PO4(aq)-> Ba3(PO4)2(s)+NaClO3(aq) Thanks alot!!:)

    asked by katlyn
  95. College Mathematics

    U.S. Presidents. The ages of the 44 presidents at their first inauguration (as of 2011) are: 57 57 49 52 50 42 54 55 64 61 61 64 56 47 51 51 56 46 57 54 50 46 55 56 60 61 54 57 68 48 54 55 55 62 52 47 58 51 65 49 54 51 43 69 a. Construct a frequency

    asked by slomomo
  96. Physics

    Betty weighs 449 N and she is sitting on a playground swing seat that hangs 0.55 m above the ground. Tom pulls the swing back and releases it when the seat is 0.76 m above the ground.The acceleration of gravity is 9.8 m/s^2. How fast is Betty moving when

    asked by Anonymous
  97. chemistry

    Carbon reacts with chlorine and hydrogen to form the compound CH3Cl. (a) Construct the structure of CH3Cl. What is the dominant form of secondary bonding for CH3Cl? Dipole-dipole interactions, London dispersion forces, Covalent bonding, Ionic bonding

    asked by adex
  98. Geometry

    ABC is a right angled triangle with ∠ABC=90∘ and side lengths AB=24 and BC=7. A semicircle is inscribed in ABC, such that the diameter is on AC and it is tangent to AB and BC. If the radius of the semicircle is an improper fraction of the form a/b,

    asked by Stranger
  99. Chemistry

    How many chlorine atoms are contained in a 1.00 g sample of iron(III) chloride, FeCl3? Use the masses to two decimal places from the chart in the front of your text. Use the format 6.02E23 for 6.02 x 1023, or 6.02E-23 for 6.02 x 10-23,use two decimal

    asked by Lindt
  100. science help?

    (a) One such reaction fuses two nuclei of carbon-12 ( 6 12C ) to form an atom of neon ( 10 20Ne ) with the emission of an α-particle. Write an equation for this process, indicating the atomic number and mass number of each of the products in the usual

    asked by sam
  101. Management Science

    Riverside oil company in eastern Kentucky produces 3 different grades of gasoline. They are regular, premium, and supreme grades. Each barrel of regular grade sells for $82 while premium grade sells for $88 per barrel and supreme grade sells for $89 per

    asked by Annie
  102. Cultural Anthrolpogy

    Anthropological research has demonstrated that supernatural beings and forces exist in what percentage of the world's cultures? A. 50 percent B. 80 percent C. 95 percent D. 100 percent My answer: C

    asked by Anna
  103. English

    1. What are you able to do? I am able to play the violin. 2. What are you able to play? I am able to play basketball. 3. What are you able to do well? I am able to dance well. 4. What are you able to play well? I am able to play this computer game well?

    asked by rfvv
  104. Physics

    A physics teacher (mass = 84.5 kg) is jogging through the woods and runs straight into a large oak tree at 3.5 m/s. Rebound speed is measured at 2.3 m/s in the opposite direction. If the time of contact with the tree is 45 milliseconds, what is the

    asked by Will
  105. U.S. History

    What occurred at My Lai? A.Vietcong guerrillas surrendered. B.U.S. forces suffered a crippling defeat. C.Vietnam became unified under one flag. D.American soldiers killed hundreds of Vietnamese civilians. I think it is D...?

    asked by Cassie
  106. Chemistry ....help

    If NaNO3 is cooled from 70C to 10C ; how much solid NaNO3 will come out of solution as a solid salt? Help me !!!

    asked by Maria
  107. physics

    An ore car of mass 36000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 21 m lower vertically, is a horizontally situated spring with constant5.1×10^5N/m.The acceleration of gravity is 9.8 m/s^2. Ignore friction.

    asked by Anonymous
  108. urgent maths pls

    A goat is tied at point A with a rope of length(L). How long can L be so that the goat can feed on exactly half of the field if the field is a circle.

    asked by me
  109. physics

    Calculate a person's hang time if he moves horizontally 2 m during a 1.39 m high-jump.

    asked by Anonymous
  110. Rhts

    If 13sinx+5=0 and x[0;270],determine witout the use of a calculator,the value of sin2x

    asked by Zinhle
  111. Algebra

    3 real numbers that form a geometric progression have sum equal to 175 and product equal to 17576. What is the sum of the largest and smallest numbers?

    asked by John
  112. Math

    Do you think regular or irregular polygons are used more frequently in the design of objects and buildings in the world???

    asked by Angela
  113. probability math

    bill is on the school archery team. the target has a center bull's-eye and two rings around the bull's-eye. the table gives the probabilities of each outcome. what is the probability that bill will get the next arrow in the inner or outer ring?express your

    asked by wayne
  114. math/ratios

    There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?

    asked by sam
  115. math

    Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved.

    asked by Hasane
  116. algebra

    A store mixes kenyan coffee worht $12 per kilogram and turkish coffee worth $16 per kilogram the mixture is to sell for $14 per kilogram how much of each should be used to make a 348-kilogram mixture?

    asked by ana
  117. Physics

    Some rental cars have a GPS unit installed, which allows the rental car company to check where you are at all times and thus also know your speed at any time. One of these rental cars is driven by an employee in the company’s lot and, during the time

    asked by Ozgun
  118. Physics

    For a certain Chemical reaction, you find that delta H = -100kJ and delta S = -200 J/K. What is the Gibbs free energy for the reaction at: (a) room temperature (b) 800 C (c) comment on whether the reactions are spontaneous or not

    asked by TIna
  119. math

    y3K, Inc., has sales of $5,276, total assets of $3,105, and a debt–equity ratio of 1.40. If its return on equity is 15 percent, what is its net income? Can someone help with a formula?

    asked by brad
  120. World History

    Why did Lincoln choose to limit his proclamation mostly to rebellious states? My answer: Lincoln chose this because he did not want to anger the border states that remained in the Union?

    asked by Anonymous
  121. Finance

    A firm's target capital structure consists of 40 percent debt, 5 percent preferred stock, and 55 percent common equity. The firm’s cost of debt is 10%, the cost of preferred stock is 11.26%, and the cost of equity is 14 %. What is the firm's weighted

    asked by John
  122. Science (physics)

    A particle P is launched from a point O with an initial velocity of 60m/s at an angle of 30 degrees to the horizontal. At the same time, a second particle Q is projected in the opposite direction with initial speed of 50m/s from a point level with point O

    asked by Joe
  123. Math

    Which shows 18.64 rounded to the nearest tenth? My answer is 18.6 is this correct

    asked by Mike
  124. College Mathematics

    Counting principles and permutations. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted. digits 0-9

    asked by slomomo
  125. physics

    A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. Instead you set up a pulley system. A rope (consider it massless) runs from the seat you sit on over an ideal

    asked by Nathalia
  126. Chemistry

    How many grams of silver nitrate must react to give 67.5 grams of Ag according to the balanced equation. Cu(s) + 2 AgNO3(aq) --> Cu(NO3)2(aq) + 2 Ag(s)

    asked by Lindt
  127. Chemistry

    What is the mass of iron (g) produced from 227.4 of iron(III) oxide ?

    asked by Lindt
  128. Mathematics

    For what values of m and n Does the expression ( mx^4 + nx^3 + 14x^2 + 9x + 2) divided by ( x^2 + 3x + 1 ) leaves a remainder , (-11x - 4 ) .. ? I divided it , nut the whole m and n remainder thingy made me so confused !!!

    asked by Mihir Sriram
  129. phical science

    Photons and neutrinos have neither charge nor mass. What are the differences between them?

    asked by dior
  130. geometry

    Consider the region in Quadrant 1 totally bounded by the 4 lines: x = 3, x = 9, y = 0, and y = mx (where m is positive). Determine the value of c such that the vertical line x = c bisects the area of that totally bounded region. Needless to say, your first

    asked by borat
  131. math

    There are 77 students in the syudent council. The ratio of girls to boys is 7:4. How many girls are in the student council?

    asked by sam
  132. Geometry

    A two-player game is played with two piles of stones, with sizes m,n. On a player's turn, that player can remove any number of stones from one pile, or the same number of stones from each pile. A player loses when they are unable to take a stone. If 1 \leq

    asked by Anonymous
  133. Economics

    Protecting intellectual property rights can result in new inventions that help the economy to grow. True False

    asked by kim
  134. physics

    A thin spherical shell of mass M = 2.00 kg is released from rest at the top of an incline of height H=1.31 m and rolls without slipping to the bottom. The ramp is at an angle of θ = 24.1o to the horizontal. Calculate the speed of the sphere's CM at the

    asked by Sarah
  135. ENGLISH, HELP?

    WHAT WOULD A GOOD ESSAY BE FOR A PROBLEM IN THE WORLD? LIKE POLLUTION, OR BANKRUPTCY? ANY OTHER IDEA'S?

    asked by paragonnova
  136. Grammar

    Rive each of the following sentences, correcting the problems in usage. If a sentence contains no errors, write correct. 1). Bicycling is the reason why I cam with this group to Iowa.

    asked by Anonymous
  137. geometry

    ABCD is a parallelogram. Let C′ be a point on AC extended such that the length of AC′=1.2AC. Let D′ be on the segment BD such that the length of BD′=0.9BD. The ratio of the area of the quadrilateral ABC′D′ to the area of the parallelogram ABCD

    asked by deepak
  138. scienc

    I'm driving my car of mass 1000 kg at 100 km/hr when I accidentally hit the rear end of a truck of mass 5000 kg traveling in the same direction at 90 km/hr. My car and the truck lock together and move as a single object. Let F1 be the force the truck

    asked by ayan
  139. Physics!

    The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×10^20 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s^2?

    asked by please..anyone help!!
  140. Chemistry

    An experiment shows a 144mL sample of gas has a mass of 0.173g at a pressure of 720mmHg at a temperature of 31 degrees celsius. what is the molar mass of the sample of gas?

    asked by Sally
  141. World History

    Why did Northern Democrats oppose the Emancipation Proclamation? My Answer: They opposed it because they felt that the proclamation would only make the war longer by continuing to anger the South.

    asked by Anonymous
  142. Math

    A gift shop buys greeting cards at $3.50 each, and sells them at an 80% markup. At what price does the gift shop sell each greeting card?

    asked by Kammi
  143. Language Arts

    what kind of behavior were greek myths meant to encourage? i think it is mainly to discourage selfishness and greed.

    asked by Anonymous
  144. AP Chemistry

    What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation? 2Na(s)+2H20(l)=2NaOH(aq)+Hs(g) How many moles of Ag can be produced if 350. g of Cu are reacted with excess AgNO3

    asked by Kayla
  145. LAN

    1. System A consists of a single ring with 100 stations, one per repeater. System B consists of four 25 stations rings linked by a bridge. If the probability of a link failure is , a repeater failure is , and a bridge failure is , derive an expression for

    asked by Sandra
  146. Chemistry

    the hydronium ion concentration of a 0.050 M solution of a weak acid is 5.9 X 10^-3 M. the acid-dissociation constant is 1.37 X 10^-4 at 25 celsius. what is the pH of this solution? A. 0.077 B. 1.30 C. 2.23 D. 3.86 E. 5.13

    asked by Chemistry
  147. Math

    The volume of a cylinder is given by formula V= pi(3.14) r^2h where r is base radius and h is height a) the height of a cylinder of radius 5cm and volume 500. Cm^3 B) radius of base of a cylinder of volume 300 cm^3 and height 10 cm Our teacher didn't

    asked by Jim
  148. geography

    1. Bolivia is pretty isolated--why? 2. Columbia has an important resource--what is it, where is it? 3. Brazil has many resources--where are they? Access? 4. Why is Brazilia a forward capital? 5. What is Cuba's access? Why does the US have a trade embargo

    asked by ashley
  149. physics

    A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same

    asked by yaya
  150. Accounting 202

    Tse does not want to give Towry this budget without making constructive suggestions for steps Towry could take to improve expected performance. Write a memo to Towry outlining your suggestions.

    asked by Majava
  151. math

    There are 3 pitchers of juice. Each student will be served ^ of the juice in a pitcher. How many students will get juice? l a. Draw lines on the pitchers to show how many students these pitchers will serve. b. Write a number model to describe the problem.

    asked by alex
  152. Physics

    A set of crash tests consists of running a test car moving at a speed of 12.2 m/s (27.3 mi/hr) into a solid wall. Strapped securely in an advanced seat belt system, a 75.0 kg (165 lbs) dummy is found to move a distance of 0.630 m from the moment the car

    asked by Haylee
  153. math

    Hi, This is the third time I posted this because it wasn't answered by anyone. PLEASE help. I think the first part is correct but I am not sure if the V=lw10 is correct. I got 10 for the number of cubes. Here is the question There is a picture with stacked

    asked by ES
  154. Spanish

    Please help me. I only want to know if I've answered these correctly thank you. 1)¿De quién es ______ suéter? A. este C. su B. esta D. esos I said the answer is A. 2)_____,¿cuánto cuestan estos tenis? Treinta pesos. A. Cuestan C. Hace dos días B.

    asked by Eri
  155. math

    I have an average of 66.67 i need a 70percent to pass the class, what do i need to get on thenext test?

    asked by jenn
  156. Physics

    A 10 g bullet is fired horizontally into a 1 kg block of wood hanging from a 1 m long string attached to the ceiling, getting stuck in the block. Due to the impact, the block then swings on the string to a maximum angle of 60 degrees with respect to the

    asked by Urgent pls help
  157. Englsih II

    Choose one of your problems (or any one from the two lists) and develop it into an organized theme in the text box provided below. There is only one assignment in this submission, but it has four steps. I. Create a broad outline, i.e., Title, Introduction,

    asked by Carlos
  158. Trignometry

    ABCD is a square where M and N are midpoints of AD and CD, respectively. If sin∠MBN=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by Stranger
  159. math

    A cube has 8 vertices. For each pair of distinct vertices, we connect them up with a line segment. There are (8 2 )=28 such line segments. For each of these 28 line segments, we mark the midpoint. How many distinct points have been marked as the midpoints?

    asked by kapil
  160. college physics

    for the resonance frequencies: fn=nv/2L If the speed (v) doubles my fn will also doubles ? why?

    asked by Anonymous
  161. chemistry

    Construct the correct structure for AsClF42-. Please construct the molecule such that the dipole is oriented vertically up or vertically down. - Name the type of hybrid orbitals the central atom forms. - Name the molecular geometry of the compound. - State

    asked by adex
  162. ....

    in the digestive tract, mouth is to bolus as a. stomach is to chyme b. gallbladder is to insulin c. small intestine is t carbohydrates d. esophagus is to peristalsis

    asked by mary
  163. Science

    Need help on the question below... Which is the warmest climate zone? A. Arctic Zone B. Temperate Zone C. Tropical Zone D. Intermediate Zone Thanks :)

    asked by Brandi
  164. Chemistry

    I could use some help please. Ammmonia, NH3, can be made by reacting Nitrogen with Hydrogen. N2+3H2=2NH3 How many moles of NH3 can be made if 7.5 moles of H2 react eith enough N2? Thank-you in advance for any help

    asked by Sara
  165. Chemistry

    Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)

    asked by Lindt
  166. Chemistry

    why is it important that the equations be balanced when performing mass-mass stoichiometry problems?

    asked by Lindt
  167. physics

    A SUPPOSED TREASURE OF OLD SILVER JEWELRY IS UNCONVERED. a.02M^3 BOX OF THE "OLD JEWELRY" HAS A MASS OF 177KG.IS IT R EALLY OLD SILVER? IF NOT WHAT IS IT?

    asked by lili
  168. Trigonometry

    Let N be a 5-digit palindrome. The probability that N is divisible by 4 can be expressed as \frac{a}{b}, where a and b are coprime positive integers. What is the value of a+b?

    asked by Joe
  169. Algebra

    3 real numbers that form a geometric progression have sum equal to 175 and product equal to 17576. What is the sum of the largest and smallest numbers?

    asked by Joe
  170. physics

    Show that the energy-momentum tensors for electromagnetism and for scalar field theory satisfy the dominant energy condition, and thus also the weak, null, and null dominant conditions. Show that they also satisfy w>-1

    asked by Soshiant
  171. math

    I asked the following the other day and received the following answer: Posted by Matthew on Sunday, March 17, 2013 at 11:03pm. A quantity of oxygen gas had 16.32 g of the radioactive isotope oxygen-19 in it. When measured exactly 10 minutes later, the

    asked by Matthew
  172. math

    A publisher prints and sells both hardcover and paperback copies of the same book. Two machines M and N are needed to manufacture these books. To produce one hardcover copy,machine M works 1/6 hours and N works 1/12 hours. For a paperback copy M and N work

    asked by Nasi
  173. biomechanics

    A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same

    asked by yaya
  174. College Math - Probability

    Briefly summarize the experimental design for deciding whether a proposed treatment should go on for further study. Note where independence came into play. If you were more conservative and reject the treatment only if the probability that it is 30%

    asked by Ilya
  175. Chemistry

    A 20.0mL 0.3M HCl solution is titrated with 0.4M NaOH. What is the exact pH of the solution before titration? And what is the pH at the equivalence point?(are there any straightforward formulas to use on this kind of problem?)

    asked by Sue
  176. Math

    Precalc (1+i)^3 and the cube root of 8i

    asked by Crystal
  177. college physics

    If I travel to Mexico and buy a 55g gold braclet for 20 dollars and take the braclet and submerge it in water starting out with 50cc and after it is submerged in the water it is 52.8cc. What is the buoyant force on the braclet? I also need to know if the

    asked by patti
  178. Biology

    To take the energy from an exergonic reaction and use it to power an endergonic reaction, a cell can: create the energy for the endergonic reaction to occur. Why is this false? I thought a exergonic reaction create energy for the endergonic reaction to

    asked by Anon
  179. science

    in the digestive tract, mouth is bolus to a. stomach is to chyme b. gallbladder is to insulin c. small intestine is to carbohydrate d. esophagus is to peristalsis

    asked by mary
  180. College Mathematics

    Counting Principles and Permutation. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted

    asked by slomomo
  181. English

    Should I use a comma or colon after as in this sentence? The sentence is not complete that I posted here I have learned many things in this class I will list a few such as different writing styles, write descriptive paragraphs,

    asked by Bernice
  182. Social Studies

    Why did the Spanish Colonists leave Florida to go to Cuba?

    asked by Didi
  183. Economics

    . How could free Media Player software (either bundled or downloaded with windows) possibly harm consumers?

    asked by Anonymous
  184. English

    The team ______ won the game is my favorite. which word correctly completes the sentence above? a. which b.whom c. who d. that

    asked by mary
  185. Physics

    Water flows through a pipe of radius 4 cm at a rate of 3.5 m/s. Suppose each water molecule is singly ionized (highly unrealistic). What is the electric current density associated with the flow of these ions? What is the electric current in the pipe?

    asked by Lindsey
  186. Physics

    Electric charge flows through a wire, which naturally has a cylindrical cross section. Suppose the charge has a current density given by J = A/r, where A is a constant and r is the distance to the wire's central axis. How much current flows through the

    asked by Lindsey
  187. math 140

    The math scores of a math test for five students were posted on the bulletin board. The students' names are Rod, Penny ,Jake, and Fred. Rod and Fred scored the same number of points. Penny did not get the highest score. John's score was 5 points lower than

    asked by betsy
  188. math

    Two angles between 0 degrees and 360 degrees have a tangent undefined. What are the angles? Why is the tangent undefined for each of those?

    asked by Tristan
  189. math

    A sequence is generated by the recurrence relation Ur+1 = 1/Ur -3. Given that U2 = U1 find the possible of U1

    asked by lindsay
  190. math 140

    A football team gained 12 yards on one play, lost 40 yards on another, and gained 34 yards on the last play of the first half. They had already gained 345 already during the half. What was the total yardage gain for the first half?

    asked by betsy
  191. Quantum Physics

    Let |\psi\rangle=\frac{1-i}{2}|0\rangle-\frac{1+i}{2}|1\rangle and |\phi\rangle=\frac{2+i}{3}|0\rangle-\frac{2i}{3}|1\rangle. What is \langle \psi\,|\,\phi\rangle? Please tell the ans...

    asked by RAJNI
  192. chemistry

    Which of the following combinations of atomic orbitals can combine to form sigma bonds? s-s ,s-p, p-p ,hybrid orbital - hybrid orbital ,hybrid orbital - s ,hybrid orbital - p

    asked by adex
  193. Algebra

    1. Simplify the expression: (x^3*y^5) (-y^7) 2. Write the expression in radical form: (125x)^1/3

    asked by Cassidy
  194. math

    The crater is circular and has a radius of about 0.4 mile. About how many square miles does this crater cover. Use 3.14 for pi answer my 1.256square am i correct

    asked by Americal
  195. Math

    Is the opposite of 0 still 0 or does 0 have no opposite? Thanks...

    asked by Brandi
  196. adv functions

    The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte

    asked by Samantha
  197. chemistry

    A student extracts 6.3 g of water when performing the following combustion: C2H8 + 4O2 --> 2 CO2 + 4H2O If the theoretical yield is 8.6, what is the percent yield?

    asked by Lindt
  198. Chemistry

    Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)

    asked by Lindt
  199. Chemistry

    Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)

    asked by Lindt
  200. math

    How do I do this? Without a calculator, determine two angles between 0 degrees and 360 degrees that have a cosine of negative square root 3 over 2.

    asked by Tristan
  201. Chemistry

    How many grams of zinc must react to give 13.0 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)

    asked by Lindt
  202. chemistry

    5:8 emperical formula with hydrogen and carbon

    asked by naseer
  203. POLITICAL SCIENCE

    describe the European origins of American conservative and liberal ideologies. Then, explain how these two American ideologies have evolved from their European origins, and the key features of each American ideology today. Do “Tea Party” beliefs neatly

    asked by kayla
  204. reading

    whatever you can do or dream you can, begin it. Boldness has genius, power and magic in it !" describe in 25 word what the author is saying.

    asked by NORMA
  205. stats.

    The mean number of bumped airline passengers per day is 1.35 and the standard deviation is 0.25. For a random selection of a group of 40 days, what is the probability that the mean of bumped passengers for the 40 days will be between 1.25 and 1.50?

    asked by Christina
  206. Propability

    Briefly summarize the experimental design for deciding whether a proposed treatment should go on for further study. Note where independence came into play. If you were more conservative and reject the treatment only if the probability that it is 30%

    asked by Iryna
  207. World History (Ms. Sue)

    Why did black soldiers often face greater hardships that white soldiers? My answer: They face greater hardships because of the color of their skin. They were often given menial jobs, lower pay, and worked under white officers. They were organized in

    asked by Anonymous
  208. English

    Write 10 sentences of subordination. Write 2 sentences for each of the following subordination. For each subornator, one sentence must begin with the subordinator; the other sentence will have the subordination in the middle. Watch punctuation.

    asked by Jemma
  209. English

    1. He worked hard to be a best baseball player. 2. He worked hard to be the best baseball player. (which one is right? Do we have to use 'a' or 'the'? Do they have a different meaning?)

    asked by rfvv
  210. math

    find the inverse function of h ^-1(x)

    asked by mace
  211. Physical Science

    The transfer of heat that takes place because of the density difference in fluids is

    asked by L
  212. geometry

    Consider the region in Quadrant 1 totally bounded by the 4 lines: x = 3, x = 9, y = 0, and y = mx (where m is positive). Determine the value of c such that the vertical line x = c bisects the area of that totally bounded region. Needless to say, your first

    asked by borat
  213. logirythms

    1/2LOG(x-1)-3LOG(X+4)

    asked by Anonymous
  214. urgent pls education

    Assuming in your class,you have noticed that a particular child who is an adolescent has suddenly become withdrawn,discuss how you are going to help such a child???

    asked by me
  215. Trigonometry

    using csc = 3.75, solve for sides: a= 3 b= ? c= ? and the remaining five trigonometric functions: sin= (1/3.75) cos= ? tan= ? sec= ? cot= ? *b is not 1; and c is not 3.75

    asked by Brandi
  216. Math

    Teo rectangles with dimensions 8cm by 10cm and 9cm by 12cm partly cover each other(see the diagram). the grey area 37cm2. what is the area of the shape marked by dots? How can I upload diagram?

    asked by Urmil
  217. algebra 1

    write a quadratic functions for graph that has an axis of symmetry of x= -3/2. summarize your steps.

    asked by Anonymous
  218. reading

    thank you ms.sue please help me

    asked by NORMA
  219. math

    3.7^2

    asked by naomie
  220. calculus

    A publisher prints and sells both hardcover and paperback copies of the same book. Two machines M and N are needed to manufacture these books. To produce one hardcover copy,machine M works 1/6 hours and N works 1/12 hours. For a paperback copy M and N work

    asked by Nasi
  221. math

    in triangle ABC ,D and E are the midpoint of line AB andAC resp.angle A=angleB=angleC=angleD=60° DE=5cm find the perimeter of triangleABC.

    asked by anupama
  222. math

    A bookshop had 60 boxes of pencils. Each box contained 85 pencils. Half of the pencils were packed into packets of 25 pencils and the rest were packed into packets of 20. How many packets of pencils were there altogether? My answer is 229 am i right? How

    asked by lidia
  223. English

    Hello. Thank you for all your answers. I'd like to clarify my previous question. Do you think it's OK to use "before" in the context: "The kids will not calm down before I buy this toy"? (Meaning: the kids will behave normally / will stop being naughty

    asked by Ilma
  224. Physics

    What is the gibbs free energy for the reaction a)temperature b)800 degrees celsius c)comment on whether the reactions are spontaneous or not (CHEMICAL REACTION) deltaH = -100kJ delta S= -200 J/K

    asked by Sarah
  225. math

    2log_3(9) solve

    asked by Hasane
  226. math

    A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg)?

    asked by Sarah
  227. Math

    How many liters of coke are there in 100 cans if each can contain .385 liters of coke? Round your answer to the nearest liter.

    asked by Nomad
  228. 7th grade math

    if you borrow $1000 at 9% interest and pay it back over 1 1/2 years, how much do you pay back including interest?

    asked by kaylie :)
  229. math

    what does |-7| mean?

    asked by naomie
  230. pre algerba

    For the past 4 weeks, you have saved $5 per week. You know have $65 in your savings account. Write an equation that represents your balance A after t weeks.

    asked by Anonymous
  231. algebra 1

    write a quadratic functions for graph that has an axis of symmetry of x= -3/2. summarize your steps.

    asked by Anonymous
  232. geometry

    The angles in triangle ABC satisfy 6sin∠A=3√3sin∠B=2√2sin∠C. If sin2∠A=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by deepak
  233. government

    How to do informational paragtaph on structure of our local goverment (mississippi)

    asked by Anonymous
  234. Chemistry

    A 20.0mL 0.3M HCl solution is titrated with 0.4M NaOH. What is the exact pH of the solution before titration? And what is the pH at the equivalence point?(are there any straightforward formulas to use on this kind of problem?)

    asked by Sue
  235. Math

    5 books and 9 magazines cost $150.50 altogether. 9 books and 5 magazines cost $175.70. How much does 1 book and 1 magazine cost?

    asked by Nomad
  236. help?

    the last few times I've posted questions no one has answered them...I'm starting to get kind of upset. let's see if this one gets answered: the perimeter of a square is 44. find the length of a diagonal.

    asked by 21 Guns
  237. stats.

    The mean number of bumped airline passengers per day is 1.35 and the standard deviation is 0.25. For a random selection of a group of 40 days, what is the probability that the mean of bumped passengers for the 40 days will be between 1.25 and 1.50?

    asked by Christina
  238. math

    the increasing global temperature can be modeled by I=0.1e^(0.02t) where I is the increase in global temperature in degrees Celsius since 1990 and t is the number of years since 1990. How much warmer was it in 2000 than in 1950? iIn what year will the temp

    asked by chris
  239. math

    1. If 96% of Chinese couples have one child (which is female 50% of the time), and the remaining 4% of Chinese couples engage in sex-selective abortion until they have a male child, what is the ratio of females per 100 males among the children (to the

    asked by Eddie
  240. chemistry

    It was a very cold day -10 C. Victor went outside to pick up the morning newspaper. He quickly noticed the icicle that formed on the nearby flagpole. Curiosity got the best of him, and he decided to lick the ice on the flagpole. Instantly, Victor's tongue

    asked by megan
  241. Economics

    Assume that the average income of an artist is $40,000 per year and that C=0.75Y^P. Further assume that in a good year the artist earns $50,000 and that in a bad year she earns $30,000. 1)Calculate the artist's average propensity to consume on average, in

    asked by Mookie
  242. Physics

    A golf ball with a mass of 50.3 g can be blasted from rest to a speed of 72.1 m/s during impact with a club head. Assume that the impact lasts only about 0.910 ms. Calculate the change in momentum of the ball. Calculate the average force applied.

    asked by Adam
  243. math

    the letters g and g stand for numbers. if g + 9=h + 9, what is true about g and h?

    asked by jeremy
  244. Math

    If someone is renting a truck that has a 40 gallon tank and it gets 10 miles per gallon and they are traveling 252 miles, what will they pay for gas for the trip?

    asked by CJ
  245. Chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

    asked by Noemi
  246. DES

    A rock is being pushed by a stream with 30 N of force. The rock has a static friction of 40 N and a sliding friction of 20 N. Does the rock move?

    asked by Judie
  247. Physics

    Suppose that each of the three masses in the figure below has a mass of 5.50 kg, a radius of 0.0700 m, and are separated by a distance of 10.5 m. If the balls are released from rest, what speed will they have when they collide at the center of the

    asked by Eryca
  248. Math

    Carmen bought 20 apples to make cider. If each apple has a mass of 18 grams, how many milligrams of apples did she buy?

    asked by Keelie
  249. Life orientation

    What, according to the basic conditions of emplyment act applies with regard to the contraventions that you've identified?

    asked by Ellen hlungwane
  250. Physics

    Jake has a mass of 88.0 kg and is zooming along in a 110.0-kg bumper car at 9.4 m/s. He bumped Allen's car, which is sitting at rest. Allen has a mass of 88.0 kg. After the elastic collision, Jake continues ahead with a speed of 3.2 m/s. How fast is

    asked by Ian
  251. vmps

    ABCD is a square where M and N are midpoints of AD and CD , respectively. If sinÚMBN=a b , where a and b are coprime positive integers, what is the value of a+b ?

    asked by kapil
  252. math

    Prove. 3/(log_2 (a)) - 2/(log_4 (a)) = 1/(log_(1/2)(a))

    asked by Hasane
  253. pre cal

    what is the period of these functions y=1/2 cos 3pi/2 y=2 cos piX/2

    asked by Anonymous
  254. statistics

    If you estimate a model y=a + b * x, where the dependent variable Y is measured in billions of dollars and your predictor variable X is measured in percent then "A" represents what?

    asked by Tara
  255. Math Geometry

    A cube has 8 vertices. For each pair of distinct vertices, we connect them up with a line segment. There are (8) (2) =28 such line segments. For each of these 28 line segments, we mark the midpoint. How many distinct points have been marked as the

    asked by Urgent pls help
  256. QSO 510

    During the dinner hour, the distribution of the inter-arrival time of customers at a restaurant is estimated to be as shown below. The mode of payment and the service times of the cash and credit card customers are shown in the following tables. Complete

    asked by Anonymous
  257. easy algebra!

    C(x)=x^2−20x+111 represents the total cost, in dollars, to produce x gallons of paint. How many gallons of paint should be produced to minimize the total cost?

    asked by please..anyone help!!
  258. geometry

    A triangle has side lengths of 6, 8, and 9. What type of triangle is it?

    asked by mayra
  259. number theoRY!!!

    How many integers appear in both of the following arithmetic progressions: A1: 2, 9, 16,.....2+(1000-1)*7 A2: 3, 12, 21,.....3+(1000-1)*9 Since 2 appears in A1 but not in A2, it does not appear in both of the arithmetic progressions.

    asked by please..anyone help!!
  260. Algebra

    A is a 2 by 2 matrix. Given that A=(5 1) (1 5) , what is the value of det(A)? det(A) is determinant of A

    asked by Stranger
  261. Quantum Physics

    Consider the following quantum circuit: bit.ly/Zlrijv (a) What quantum state do you have to input in order to get output |00>? (b) What quantum state do you have to input in order to get output |11>? (c) What quantum state do you have to input in order to

    asked by helpful
  262. 140

    Tom and Andy find a long drainage pipe in a vacant lot. It is big enough so that each boy can just manage to squeeze into it and crawl from one end to the other. If Tom and Andy go into the pipe from opposite ens, is it possible for each boy to crawl the

    asked by betsy
  263. Trignometry

    Let m and M be the minimum and maximum values of the domain of f(x)=sin^−1(x2−35), respectively. What is the value of M−m? sin^-1 is sin inverse

    asked by Stranger
  264. Limit Math

    Evaluate lim x→∞ 2x/(√(x^2+3)-4) in words 2x divide by(root(xsq +3) -4)

    asked by Stranger
  265. Finance

    A company has total assets of $8,500,000 and its total turnover of 2.35 times. If the return on assets is 9 percent, what is its profit margin? Please help with a formula?

    asked by Todd
  266. stats

    Use this z-score formula for this problem: z = (x - mean)/(sd/√n) x = 1.25, 1.50 mean = 1.35 sd = 0.25 n = 40 Calculate two z-scores, then use a z-table to determine probability between the two scores. I hope this will help get you started. •stats. -

    asked by Christina Ms Sue please help
  267. Biology

    Where is the clitoris situated? What is transpiration? What is the function of Bertholin's Glands? What is the chemical composition of melanin? Where are the testicles situated in the human body?

    asked by helpless
  268. Number theroy

    What is the 50th smallest positive integer that can be written as the sum of distinct non-negative integer powers of 3?

    asked by Stranger
  269. Combinations Maths

    25 independent, fair coins are tossed in a row. What is the expected number of consecutive HH pairs? If 6 coin tosses in a row give HHTHHH, the number of consecutive HH pairs is 3.

    asked by Stranger
  270. aig math

    A bookshop had 60 boxes of pencils. Each box contained 85 pencils. Half of the pencils were packed into packets of 25 pencils and the rest were packed into packets of 20. How many packets of pencils were there altogether? My answer is 229 am i right? How

    asked by May
  271. Math

    Principal 450.00 x interest rate 9.25 x compounded monthly x 4 years

    asked by Jeremy
  272. Statistic

    In a jar there 12 white balls 8 red balls 4 greens all with the same size if a person selects one ball at random find the probability it is a red ball.

    asked by Morena
  273. math

    2log[base3]9 = ?

    asked by Jacob
  274. Math Ms. Sue Please help!

    How do you find an answer to a MAD (mean absolute deviation) chart?

    asked by Angelina
  275. algebra II

    i just placed $1500 in an account which earns 8% per year compunded quartely. how much money will be in the account in 20 years? how long will it tke for this account ot have $7000 in it?

    asked by Anonymous
  276. Science

    For every cubic meter of 30celsius saturated air that is cooled to 16celsius, how many grams of water vapor will be lost?

    asked by Izabel
  277. math

    The total capacity of 2 water bottles, A and B, is 680 ml. The ratio of bottle A's capacity to bottle B's capacity is 4:6. How much larger is bottle B's capacity than bottle A's? My answer is 136, am i right?

    asked by lidia
  278. science

    If your weight is 60 N on earths surface how far should you go from the centre of earth so that your weight will be 300 N ?(radius of earth is 4.4*10^6 m)

    asked by monika
  279. Mathematic

    Haw many meters are in 2.7 kilometers

    asked by Donita
  280. algebra 2

    how do you find all real zeros of the polynomial function. y=4x+15x -8x-3

    asked by Elaina
  281. asap math

    The measure of a triangle the measure of d is 35° and the measure of cab is 35° what is acd

    asked by noahc
  282. math

    A basket contains 15 red numbered balls and 10 white numbered balls. A sample of five balls is selected. How many samples contain three red balls and two white balls? Explain your answer.

    asked by alice
  283. maths-quadrilateral

    explain All the parallelograms are rhombus but all rhombus are not a parallelograms

    asked by anoynomous
  284. Algebra

    Consider all quadruples of real numbers (x_1,x_2,x_3,x_4), such that x_1\leq x_2 \leq x_3 \leq x_4 and each of the four numbers plus the product of the other three equals 130. If S is the sum of all possible values of x_4, what is S, rounded to the nearest

    asked by John
  285. math

    A box consists of white,yellow,green and black balls, in the ratio 2,3,1,6.Total number of balls are 432.How many yellow balls in the box

    asked by luthando
  286. geometry

    Carlos want to show a rectangle in his drawing. What dotes he have to do to the drawing below to make the rectangle a closed shape?

    asked by Ms.Vargas
  287. algebra 1

    how do you find each unit rate? $57 for 6 hours

    asked by Gabi
  288. frese

    Sonya owes mark $ 5.00. Clair owes Mark $ 4.00 Who owes Mark more money?

    asked by kaki
  289. chemistry

    define elements, compound and molecules.

    asked by Anonymous
  290. calculus

    A publisher prints and sells both hardcover and paperback copies of the same book. Two machines M and N are needed to manufacture these books. To produce one hardcover copy,machine M works 1/6 hours and N works 1/12 hours. For a paperback copy M and N work

    asked by Nasi
  291. Algebra

    Find the value of p such that (–6, 3) is the midpoint of the points (-9, -1) and (–3, p).

    asked by Anonymous
  292. zoology

    Where can I get detail information about "african giant land snail"?

    asked by snail
  293. Math

    How do you do a factor tree for the lcm? I don't get it. (Or GCF)

    asked by Nomad
  294. Health

    You've received an invoice for $3000.00 with terms of 3/10, 1/20.n/30. How much will you have to pay if you pay the bill in 12 days.

    asked by Janette
  295. math

    Why is 1/8 greater than 1/10 but less than 1/3?

    asked by mateo
  296. word puzzle

    Foreign object - fellow has one

    asked by Di
  297. Math

    What does it mean when it says: Which state has the largest population growth

    asked by Celest
  298. math

    Marty ate 1/4 of his pizza and Luis ate 1/3 of his pizz.marty ate more pizza than luis.how is that possible?

    asked by mateo
  299. math

    Greater than40 less than70divisible evenly 15 digits add up to6

    asked by dmoore
  300. Chem

    264.6 g of water is in a Styrofoam calorimeter of negligible heat capacity. The initial T of the water is 16.9oC. After 270.9 g of an unknown compound at 71.3oC is added, the equilibrium T is 33.2oC. What is the specific heat of the unknown compound in

    asked by Anonymous
  301. math

    log_3 (3)^(2x)

    asked by Hasane
  302. Math

    18 play baseball, 17 play basketball, 30 play neither or both. I'm trying to make a Venn diagram but don't understand how. Please help!

    asked by Sophie
  303. math

    find the coefficient of x^29 in the expansion (1+2x)^12 .(1+x)^18

    asked by gandhish
  304. statistics

    a. A single student (n=1) b. For a mean of 50 student (n=50) c. For a mean of 500 students (n=500)

    asked by Anonymous
  305. 7th Grade Math

    What is arithmetic and geometric sequences?

    asked by Jessie
  306. Algebra 1

    Can you please help me with this question? I put parenthesis to make it look less confusing. (10)/(x)-(10)/(x-3)=(-3)

    asked by Sam
  307. chem

    suppose that 1.550g of hydrochloric is dissolved into 500.0ml of solution. what is the molar concentration of the acid?

    asked by frankie
  308. physics

    The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at 100 m/s2 while it is in my hand. What is the mass of the ball in kg?

    asked by ayan
  309. SOCIAL STUDIES

    an example of a part-whole effect question order effect is in the case which issue?

    asked by KEN
  310. science

    Sally sells seashells by the seashore. In the morning, her sack of shells weighed 70 N. She sold seventy shells and in the evening her sack weighed 7 N. What was the average mass in kg of the shells she sold?

    asked by ayan
  311. college physics

    If a coyote is standing at the top of a 125 m cliff getting ready to drop a 230 kg boulder on a road runner. What is the potential energy of the boulder just as he is ready to drop it? What is the kinetic energy of the boulder at the instant it hits the

    asked by patti
  312. POLITCAL SCIENCE

    are frequently sponsored by news organizations, who use them to help predict outcomes of presidential or other national races.

    asked by KEN
  313. Algebra 1

    If the discriminant of 5u2 + bu + 2 = 0 is 41, fi nd all values of b.

    asked by Delle
  314. math

    how do you solve: input __ 16 22 50 8 30 output 10 11 14 28 __ 18 (hint: divide and add)

    asked by ty
  315. science

    The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×1020 m from the center of our galaxy. What is the acceleration of our sun towards the center of the galaxy in m/s2?

    asked by ayan
  316. Math

    1. What two numbers can be multiplied to equal -60 and added to be -11? 2. What two numbers can be multiplied to equal -36 and added to be -16? 3. What two numbers can be multiplied to equal 10 and added to equal -7? Thanks

    asked by Suzy
  317. Stats

    1. The question asks to choose a data point in our graph (we chose 476,44) of median home prices (x) and percentage of students who scored Advanced on math MCAS (y). We have to find the residual. I'm confused because the equation I was given is e=y-yhat I

    asked by Jill
  318. Grammar

    By, who were telephones improved? How can I know if this is right with who or should it be whom?

    asked by Dakota
  319. Life orientation

    In 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community

    asked by Adelaide
  320. geometry

    find the perimeter of the rectangle if the area is 6m+3m

    asked by Catrina
  321. precalc

    sine curve in the form of y = a sin(pi/2x) that passes through the point (2.5,-9.546)

    asked by spencer
  322. Math HELP!! :(

    a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design

    asked by Lizzy
  323. MATH

    The life cycle cost of the BLUEBIRD system is $600 million. The program acquisition cost is $400 million and the development cost is $150 million. There are no facilities costs. What is the procurement cost of the BLUEBIRD system? $200 million $150 million

    asked by CHUCK
  324. political science

    what is ''reasonable search''?

    asked by alicia
  325. college algebra

    I need help bad. Don't know which formula to use. Please explain step by step. 2x^2-12x+19. Find the interval where f is increasing and decreasing.

    asked by Jackie
  326. Newsworthy advice

    I need to make like a newsworthy story but it has to be graphic.. like a bar graph.. it has to be on something job related on something in my Town of Kalamazoo. Does anyone have any ideas what I could research and do my bargraph on?

    asked by Blaze
  327. Math

    a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design

    asked by Kevin
  328. help?

    find the altitude of an equilateral triangle if a side is 6 mm long.

    asked by 21 Guns
  329. English

    Hello. Will you please tell me if inversion is possible in the following context: "Many people came to Mary's party yesterday. There aslo was (?) Peter, Jack's cousin." Thank you so much for your help!

    asked by Ilma
  330. MEDICAL

    inj RL 60 ML/HR AND INJECTION NS 60 ML/HR IV INFUSION TO BE CONNECTED FOR A PATIENT WITH GE . HOW MANY ML PER HOUR YOU WILL ADMINSTER?

    asked by Anonymous
  331. Life orientation

    How should discrimination in the work place be dealt with?

    asked by Ellen hlungwane
  332. math

    find three sets of values for x and y to make x mi/y min= 4 mi/ 32 a proportion.

    asked by jay
  333. physx!!!!

    The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at 100 m/s^2 while it is in my hand. What is the mass of the ball in kg?

    asked by please..anyone help!!
  334. math

    I have an average of 66.67 i need a 70percent to pass the class, what do i need to get on thenext test?

    asked by jenn
  335. math

    find three sets of values for x and y to make x mi/y min= 4 mi/ 32 a proportion.

    asked by jay
  336. pre cal

    what is the period of these functions y=1/2 cos 3pi/2 y=2 cos piX/2

    asked by Anonymous
  337. math

    find three sets of values for x and y to make x mi/y min= 4 mi/ 32 a proportion.

    asked by jay
  338. pre cal

    what is the period of these functions y=1/2 cos 3pi/2 y=2 cos piX/2

    asked by Anonymous
  339. physics

    Sally sells seashells by the seashore. In the morning, her sack of shells weighed 70 N. She sold seventy shells and in the evening her sack weighed 7 N. What was the average mass in kg of the shells she sold? The acceleration of gravity is −9.8 m/s2.

    asked by please..anyone help!!
  340. math

    How much paper is used for a label on a can of frosting. The height of the jar is 5 inches and the radius is 1.5 inches I did SA=2TTrh+2TTr^2 SA=2TT1.5(5)+2TT1.5^2 SA=15TT + 2TT2.25 SA=15TT=4.5TT SA=19.5TT SA=61.261 SA=61.3in^2 61.3in squared of paper was

    asked by Scott
  341. Trigonometry - finding cos 36 given cos 72?

    Please help, I know cos 72 degrees = (sqrt 5 - 1)/4. I need to know what cos 36 degrees is. How to do so?

    asked by Knights
  342. Algebra

    The function f(x)=x^4−10x^3+40x^2−80x+64 has four complex roots, one of which is 2−2i. What is the sum of all real and imaginary coefficients of these roots? i here is imaginary unit i.e. i^2 = -1

    asked by Stranger
  343. Trignometry

    The angles in triangle ABC satisfy 6sin∠A=3√(3)sin∠B=2√(2)sin∠C. If sin^2∠A=a/b, where a and b are coprime positive integers, what is the value of a+b?

    asked by Stranger
  344. Quantum Physics

    a) What is QFT6 of 1/√2(|0>+|3>)? b) What is QFT6 of 1/√2(|1>+|4>)? c) What is QFT6 of 1/√3(|0>+|2>+|4>)? d) What is QFT6 of 1/√3(|1>+|3>+|5>)? Answer like: a) |0> = ; |1> = ; |2> = ; |3> = ; |4> = ; |5> = ...

    asked by helpless
  345. math

    solve and graph 4x+3y=6

    asked by Robbie
  346. Slope Maths

    What is the slope of the line tangent to the quadratic f(x)=4x^2−3x+6 at x=7?

    asked by Stranger
  347. Math

    Please help Ms.Sue! a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design

    asked by Kim
  348. Algebra

    How many positive integers n≤1000 cannot be written in the form a2−b2−c2 where a,b and c are non-negative integers subject to a≥b+c?

    asked by Stranger
  349. math

    Find the height of a triangle with a base of 24 ML and an area of 66 square. My answers is2.75 am i correct. Thanks

    asked by Americal
  350. writing

    My 5th grade year was coming to a close and I, personally, was really looking forward to summer. Two months of sleeping in late and doing whatever. How would I write this...

    asked by Suzy
  351. English

    Hello. Please help me with the language problem. Do you think it's possible to use "before" in the following context: "The kids will not calm down before I buy this toy"? Thank you very much for help.

    asked by Ilma
  352. math

    . Find the roots of the polynomial equation. x2 + x undefined 72 = 0 (Points : 1) 9 and 8 6 and 6 2 and 16 9 and 8

    asked by vilmaa
  353. Life orientation

    describe the course of Ap chdmistry

    asked by Jossie
  354. simple queston

    what is -430 in scientific notation?

    asked by Anonymous
  355. Algebra

    We define n♡ recursively as follows. 1♡=1; n♡=((n−1)♡)⋅n+1 Find the largest n

    asked by Stranger
  356. Algebra

    Let S(N) denote the digit sum of the integer N. Let M denote the maximum value of N/S(N), where N is a 3-digit number. How many 3-digit numbers N satisfy N/S(N)=M? The digit sum of an integer is the sum of all its digits. For example, the digit sum of

    asked by Stranger
  357. Geometry

    BC is a triangle with ∠BAC=60∘,AB=5 and AC=25. D is a point on the internal angle bisector of ∠BAC such that BD=DC. What is AD^2? It is not stated that D lies on BC. This assumption is not necessarily true.

    asked by Stranger
  358. Science

    how many kw is an airflow of 30m³/s @130°C

    asked by Dave
  359. Combinations Maths

    For how many positive integers n are there exactly ⌊n/2⌋ or ⌈n/2⌉ primes less than or equal to n?

    asked by Stranger
  360. English

    Can someone check of this email is grammatically correct? Thank you. How are things? 1) I’ve been on holiday in England and I’ve been attending an English summer course for two weeks. 2) I’ve met an interesting girl from London, Mary, at a party

    asked by John
  361. English

    1. He seldom tatoos roses on his arms. 2. He sometimes woos when he meets a pretty lady at a meeting. 3. He seldom tatooes roses on his arms. 4. He sometimes wooes when he meets a pretty lady at a meeting (Which ones are grammatical?) 5. He tatooed a

    asked by rfvv
  362. math

    What is the rule for this input/output table Input 2 output 10 Input 6 output 26 Input 8 output 34 Input 10 output 42

    asked by tashs
  363. physics

    A 1.03 kg mass is attached to a spring of force constant 10.6 N/cm and placed on a frictionless surface. By how much will the spring stretch if the mass moves along a circular path of radius 0.525 m at a rate of 2.20 revolutions per second?

    asked by Jamie
  364. Life orientation

    In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community .provide relevant sources to support your claims.(teenage pregnancy).

    asked by Adelaide