Questions Asked on
December 11, 2012

  1. A probability question i think

    In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard? Thanks in

  2. physics

    A simple pendulum consists of a ball connected to one end of a thin brass wire. The period of the pendulum is 2.0000 s. The temperature rises by 149° C, and the length of the wire increases. Determine the period of the heated pendulum

  3. math

    A $15,000 debt is to be amortized in 12 equal semiannual payments at 5.5% interest per half-year on the unpaid balance. Construct an amortization table to determine the unpaid balance after two payments have been made. Round values in the table to the

  4. physics pencil torqu

    A pencil, 15.7 cm long, is released from a vertical position with the eraser end resting on a table. The eraser does not slip. Treat the pencil like a uniform rod. What is the angular speed of the pencil just before it hits the table? What is the angular

  5. Grammar-clauses

    I put the underlined parts of the sentences in parentheses. William Faulkner’s The Sound and the Fury is a novel (that uses the technique of stream of consciousness). independent clause adverbial clause adjectival clause (my answer) noun clause It takes

  6. Math 6 Help!!!

    Danny poured 78 liters of water into containers X, Y, and Z. The ratio of the volume of water in Container X to the volume of water in Container Y is 5 : 2. The ratio of the volume of water in Container Y to the volume of water in Container Z is 8 : 11. a)

  7. Science

    what is the most common mineral?

  8. Consumer math

    Complete the chart to find the mean, variance and standard deviation. Remember to use commas and round numbers to the nearest tenth. X _ X _ X - X _ (X - X)2 1. 900 = 466.2 = The mean is 2. 35 = -398.8 = 159,041.4 The median is 3. 500 = 66.2 = The variance

  9. physics

    water is moving at a velocity of 2m/s through a hose with an internal diameter:1.60cm. What is the flow rate in liters per second?

  10. chemistry

    * A 50 gram sample of an unknown metal warms from 18 to 58 after absorbing 800 joules of energy. what is the specific heat of the metal? *copper has a specific heat of 0.387 j/g degree celsius. what is the mass of a piece of copper that undergoes a 21.0 C

  11. Precalculus

    This is for solving exponential/logarithmic functions: (This is a base e Logarithmic function I would assume): e^(4x)/10 =4^x-2 ? I understand the properties of logs for the most part, but I have a hard time figuring out the step-by-step process on how to

  12. Chemistry

    (a) The phase diagram of the binary system, neodymium-scandium ( Nd-Sc ) is given below. There are two polymorphs in the solid state: alpha which is hexagonal close packed (HCP) and beta which is body-centered cubic (BCC). Identify all phases present at

  13. maths

    Find parametric equations of the line that is tangent to the parabola y = x^2 at the point (−2, 4).

  14. statistics

    A tobacco company claims that the nicotine content of its "light" cigarettes has a mean of milligrams and a standard deviation of milligrams. What is the probability that randomly selected light cigarettes from this company will have a total combined

  15. 7th gade math Ms. Sue please

    1. y minus five over three= 1 (1 point) –2 8 18 6 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point) –5a 5a 37a –37a Simplify the expression. 4. 9a – b – 2a – 10b (1 point) –7a + 11b 11a + 9b –11a

  16. Physic

    A lamp filament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an incandescent lamp is viewed with a spectroscope?

  17. math

    a 27 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece, find the length of all three pieces.

  18. Chemistry

    what is dispersion,dipole,hydrogen bonding of HBr NH3 NaF

  19. maths --plse help me..

    In a purse there are 20-rupee notes 10-rupee notes and 5-rupee notes. the number of 5-rupee notes exceeds two times the 10-rupee notes by one. the 20-rupee notes are 5 less than the 10-rupee notes. if the total value of the money in the purse is Rs185 find

  20. Physics

    A weight is hung from the ceiling of an elevator by a massless string. under which circumstances will the tension in the cord be the greatest? smallest? a.) The elevator rises with decreasing speed b.) The elevator rises with increasing speed c.) The

  21. stat

    the process that produces sonora bars a type of candy is intended to pduce bars with a mean weight of 56 gm. The process standard deviation is known to be 0.77gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Test to see wheather the

  22. math please help imedietely

    What is the answer to 9:3::49:?

  23. English-Grammar

    John Paul Jones moved to America to avoid a trial that involved his handling of a mutiny. simple sentence compound sentence complex sentence (my answer) compound complex sentence

  24. English-Grammar

    After the war, American shipping became vulnerable to attacks by pirates. simple sentence (my answer) compound sentence complex sentence compound complex sentence

  25. English-Grammar

    Although he was born in Scotland, he became a hero of the American Revolution. simple sentence compound sentence complex sentence (my answer) compound complex sentence His ship was badly managed, but Jones refused to give up. simple sentence (my answer)

  26. Physics

    Assuming the fluid has a density of 1.00 (g/cm^) at what height h should the bottle be placed so the liquid pressure is 38mm-Hg ? B.At what height h should the bottle be placed so the liquid pressure is 460mm-H_2O ? C.If the blood pressure is 18 {mm-Hg}

  27. chemistry 122

    81) According to the following thermochemical equation, what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2. SiO2(s) + 4 HF(g) �� SiF4(g) + 2 H2O(l) DH°rxn = -184 kJ 81) A) 173 g B) 37.5 g C) 150. g D)

  28. criminal justice

    Write a 1,400- to 1,750-word paper in which you identify, compare, and contrast the policing function at the local, state, and federal organizational levels. Analyze how the organizational, management, administration, and operational functions at these

  29. calculus

    find all discontinuities (16x/2x3-8x3=0)

  30. Chemistry

    Potassium-42 has a half life of 12.4 hours. How much of an 848 g sample of potassium-42 will be left after 62.0 hours? Please help me!!

  31. Physics

    A skydiver deploys his parachute when he is 950m directly above his desired landing spot. He then falls through the air at a steady 5.0 m/s . There is a breeze blowing to the west at 1.1 m/s. At what angle with respect to vertical does he fall? By what

  32. chemistry

    At a certain temperature, the Equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.500 mol of H2 and 0.500 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at Equilibrium? equation: H2 + I2 =

  33. Math

    Need some help with this problem. If you have a cube that is made up of 27 individual cubes. The entire cube has 3 length, 3 width, and 3 height if you take one cube away from each of the 8 vertices, what is the surface area of the cube? thanks

  34. geometry

    a tree grew at a 3 degree slant from the vertical. at a point 60 feet from the tree, the angle of elevation to the top of the tree is 14 degrees. find the height of the tree to the nearest tenth of a foot.

  35. statistics

    23 percent of all homes purchased were investments 800 homes were sold what is probability 175 of homes were for investment

  36. Precalculus

    ln x -4 In 3 =ln (1/5 x)

  37. Precalculus

    log3 (x+1) - log3 (x-3) = 2

  38. chemistry

    SOCl2 + C4H6CaO4 ¨

  39. English

    My dad and i talked to my aunt last night. underline the compound word and circle any subject pronouns.

  40. John

    Is the following simple, compound, comples, or compound complex sentences? The shopping mall has a store that sells nothing but clocks. The governor chose the best people whom we could find for the committee; Mr. Dobbs was appointed committee chairman.

  41. English

    What are the dependent and independent clauses in the following sentences? When the campfire was burning steadily, all the campers sat on the ground around it, and someone began to tell a scary story. After he had been in the house for an hour or so, he

  42. math

    Two lookout stations, which are 25 miles apart along the coast on a north-south line, spot an approaching yacht. One lookout station measures the direction to the yacht at N 33degrees E, and the other station measures the direction of the yacht at S

  43. math

    Translate the following argument into symbolic form and determine wheter it's logically correct by constructing a truth table. If the team wins, then the team remains in the playoffs. If the team stays in the playoffs, then the championship is within

  44. Physics

    On the moon the surface temperature ranges from 395 K during the day to 1.02 x 102 K at night. Convert these temperatures to the Celsius and Fahrenheit scales. (a) 395 K in degrees Celsius; (b) 395 K in degrees Fahrenheit; (c) 1.02 x 102 K in degrees

  45. Chemistry

    What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in 21.6 s? Please help me!!

  46. ece

    1.wich of the following dramatic play behaviors are most typical for a 2-year old child? a.uses realistic props,and repeats routines over and over. b.prefers exciting and danger-packed themesfor play. c.plays in groups of one gender, with lots of dialogue.

  47. Chemistry

    If 100.0 g of carbon-14 decays until only 25.0 g of carbon is left after 11,460 y, what is the half-life of carbon-14?

  48. chemistry

    In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq)--> 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 746 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a

  49. math

    Determine whether the following argument is correct. If it's not correct, explain what is wrong with ther argument and change the minor premise to make a correct argument. If a triangle is equilateral, then it has three equal sides. Triangle ABC doesn't

  50. Chemistry

    The half-life of hafnium-156 is 0.025 s. how long will it take a 560 g sample to decay to one-fourth it's original mass?

  51. Math

    What is the simple interest on a loan with a principal of $6,000, an interest rate of 7.39%, and a term of four years?

  52. Chemistry

    Carbon-14 has a half-life of 5730 y. How much of a 144 g sample of a carbon-14 will remain after 1.719 (times) 10 4y?

  53. Chemistry

    Carbon-14 has a half-life of 5730 y. How much of a 144 g sample of a carbon-14 will remain after 1.719 (times) 10 4y?

  54. Boston College

    Suppose that the population of weights of airline passengers has mean 150 lbs. and standard deviation 25 lbs. A certain plane has a capacity of 7,800 lbs. (a) What is the probability that a flight of 50 passengers will exceed capacity it? (b) If we wish to

  55. physical science

    on hole 9,Bill hit a golf ball. The golf ball weights 0.45 kg.The acceleration on the ball was 4/m/s2. What was the force of Bill swing?

  56. Finance Accounting

    Blankenship Company estimated that its warranty expense would be $4,250 for the current year. During the year Blankenship paid $920 to repair merchandise that was returned by customers. a) What is the amount of warranty expense for the current year? b) If

  57. AP Physics B

    system consists of a steal beam of mass M 􏰀 68.4 kg and length L 􏰀 1.84 m, with a 39.0-kg brass sphere attached at the right end of the rod, as shown below. BA a. Determine the moment of inertia of the system for rotation about an axis through the

  58. Accounting

    which of the following is true: cash flow data is superior to earnings under the accrual basis in predicting long-term performance of an entity, earnings under the accrual basis is superior to cash flow data in predicting short-term performace of an

  59. chemistry

    The concentration of ammonium phosphate, (NH4)3PO4, is 1.60 M. What is the concentration of ammonium ions in solution?

  60. calculus

    The region A is bounded by the curve y=x^2-5x+6 and the line y = -x + 3. (a) Sketch the line and the curve on the same set of axes. (b) Find the area of A. (c) The part of A above the x-axis is rotated through 360degree about the x-axis. Find the volume of

  61. biostatatistic

    is it more difficult to reject a null hyputhesis if we use a 10% level of significance compared to 5% level of significance.?

  62. physics

    A plank with m=0.12 kg and 50cm long has one mass of m1=0.11kg sitting on one end and a m2=0.055kg at the other end. Where should the pivot point be to balance the plank?

  63. math

    what percebt of total population is found betweenthe mean and the z-score, assume z=2.57

  64. CAP hemistry

    When determining the molar mass of a volatile liquid by heating the liquid and then using the condensed, volatile vapor's mass, why do volatile liquids with lower boiling points give better results? Also, what effect would the formation of dimers have on

  65. Health

    What are the six types of nutrients?

  66. Physics-please check my work

    Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system: *FALSE 4.) A force can not exist without

  67. Pre-Calc

    Two lookout towers on Mount Abraham and Snow Mountain are 29 miles apart. A fire warden in each tower sees a forest fire. From Mount Abraham the angle formed with the line of sight to the fire and the line of sight to the other tower is 44 degrees. From

  68. Leadership & Ethics in Healthcare

    You will demonstrate your ability to apply ethics to your future career in a healthcare setting by creating a one-page statement of your professional code of ethics. This statement should clearly identify your “ethical bottom line.” Be sure that your

  69. english

    I had an assignment to read a story and the assignment is to write the thesis of the story. where would I find it?

  70. Chemistry

    Question One: Comment on the solubility of hydrogen ( H2 ) in liquid ammonia ( NH3 ). State whether you expect hydrogen to be highly soluble or almost insoluble, and explain why. i)Highly soluble due to hydrogen bonding. ii)Highly soluble due to compatible

  71. chemistry

    If the 12.5ml of NaOH solution is required to react completely with 0.300g of KHP (Potassium Hydrogen Phthalate, 204.2g/mol). What is the molarity of NaOH?

  72. Chemistry

    The equation for photon energy, , is where = 6.626×10−34 (Planck's constant) and = 3.00×108 (the speed of light). What is the wavelength, , of a photon that has an energy of = 3.99×10−19 ? How do go about solving this? I multipled the constant w/

  73. PHYSICS

    What force must be exerted on the master cylinder of a hydraulic lift to support wt of a 2000 kg car resting on the slave cylinder? master : 2cm diameter,slave: 24cm diameter

  74. Chemistry

    A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 22°C and 47% relative humidity (that is, the water vapor in the air is 0.47 of the equilibrium vapor pressure at 22°C). The bottle is brought outside and stored at 0.0°C. My

  75. Chemistry

    Is this reaction exothermic or endothermic? Fe(NO3)3+ NaSCN

  76. math

    When y = 3, which of the following is FALSE? A. y is prime and y is odd B. y is odd or y is even C. y is not prime and y is odd D. y is odd and 2y is even

  77. chemistry

    2NaClO2---> 2NaCl + 3O2 if 3.85 grams of NaClO3 react, how many moles of O2 are created?

  78. Reading/language arts

    Can someone help me with this. Create 1 sentence with these words KEEN, FURIOUS, AGONY, CRUELTY, MOLES, DWELL. It must make sense.

  79. physics torque i think please help

    Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2kg, is traveling along the line y=6.00m at 3.45 m/s in the positive x-direction. Jogger B, with a mass of 62.4kg, is traveling at 4.23 m/s along the line x=3.00m in the

  80. Precalculus

    More log/exponential equations log2 x + log2(x+2) =3

  81. Physics

    Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 40m above that pipe. Pa?

  82. math

    eva wanted to find the quotient of 32 divided by 4. she started at 32 on the number line and counted backwards by 4. how does this give her the correct answer of 8

  83. Chemistry

    In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq)--> 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 746 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a

  84. English

    (1)Brenda would have liked to have taken her vacation at the beach. (2) However, the weather forecast on the television called for rain. (3) Also, her fiancé, Max, wanted to vacation in the mountains. (4) After a heated discussion, Brenda and Max decided

  85. chemistry

    hey guys need some help here!!! if 0.250mol of CO and 0.250mol of H2O were combined in a 125mL flask and the reaction allowed to reach equilibrium . Kc= 1.56. write the equ expression and calculate each substance Co(g) +H2O(g) .... Co2(g) +H2(g)

  86. english 2

    Correctly punctuate and capitalize the following: to whom it may concern in regards to the memorial day fiasco aboard your cruise ship star princess we would first like to offer our sincere apology for our part in the mishap while we do not plan on taking

  87. math

    use a multiplication table to solve a division problem. in what order doo you find the quotient, the divisor, and the dividened.

  88. comparing fractions

    15/16 greater,less than or equal to 3/8

  89. Physical Science

    an object with a mass of 50kg is hurled at an acceleration rate of 30 m/s2. How much force was applied to the object?

  90. Literacy

    Which of the following types of documents are considered primary sources?

  91. psychology

    what does it mean mind over matter?

  92. Math

    A souvenir mug sells for 8 dollars. Kendra gives the clerk 9 dollars and receives 56 cents. what is the sales tax rate? Thx!

  93. statistics

     Variable N Mean StDev SE Mean 95% CI  Sleep 20 6.950 1.572 0.352 (6.214, 7.686)  Give me the interpre the 95% confidence interval fir the hours of sleep a student gets.

  94. Physical Science

    How much force is required to give a 500kg crate an acceleration of 2 m/s2 on an icy surface without friction?

  95. statistics

    6. Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190

  96. math

    To use card A, the cost is $1.00 to connect and then $0.04 per minute. To use card B, it costs $0.65 to connect and then $0.06 per minute. For what number of minutes does it cost the same amount to use each card for a single call?

  97. Science

    i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force

  98. sociology

    which sociological approach focuses on the macrolevel and would tend to view inequality in gender as central to behavior and organization?

  99. calculas

    let p=(1,1,1), Q=(2,3 5), and R=(-1,3,1). find the area A of thr triangle with vertices P,Q, and R

  100. math

    how to you find the perimeter of a octagon with side length 7.2cm

  101. Writing Class

    Differences between My Brother and I

  102. physics

    A large water tank is 18m above the ground. Suppose a pipe with a diameter of 8cm is connected to the tank and leads down to the ground. How fast does the water rush of the piper at ground level? Assume that the tank is open to the atmosphere.

  103. Physics

    A 3 m long lever is used to lift a mass of 500 kg. If a force of 200 N is to be used to life the mass, then how far from the mass should the fulcrum be placed? Assume the mass and the force act at the ends of the lever.

  104. math

    how do you find the perimeter of an rectangle with sides 24 ft and 17 ft?

  105. Physics

    A 3 m long lever is used to lift a mass of 500 kg. If a force of 200 N is to be used to life the mass, then how far from the mass should the fulcrum be placed? Assume the mass and the force act at the ends of the lever.

  106. math

    one tenth of my money is 2.45.how much money have i ?

  107. My Math

    ecide whether each equation has one solution, no solutions, or infinitely many solutions. 1. 2(x – 3) = 2x (1 point) one solution no solutions infinitely many solutions 2. 3(y – 3) = 2y – 9 + y (1 point) one solution no solutions infinitely many

  108. Math

    observe the first 3 sets of numbers to determine the missing value in the fourth set: (-5,23,12,16) (1, 39,-14,52) (17,47,42,-12) (25,?,11,31)

  109. 7th grade math Ms. Sue please last questions

    2. 6x + 29 = 5 (1 point) –4 –18 204 –144 7. 4(y – 4) = 8 (1 point) –2 2 4 6 9. Raymond buys bottles of water at $2.10 each and a large pizza at $12.99. The total cost was $21.39. How many bottles of water b did he buy? (1 point) 2.10b + 12.99 =

  110. English

    Which sentence used an adverb to answer the question “where”? A. When in a hurry, Maggie walks rapidly B. Mary left Davenport yesterday. C. Dwayne searches the want ads daily. D. John said, “I’ve decide that I’m going away.” I think the aswer

  111. High School English

    How did The Masque of the red death show evil? Ive read it over and over and cant seem to find evil no where in this story.

  112. Algebra

    I solved the inequality and now I have to graph and shade it in. Y

  113. 8th Grade Science

    Label these reactants and products: 3Fe + 2 O2> Fe3O4

  114. law

    Agile Corporation borrows $1 million from Hi Finance Company (HFC). Agile signs a financing statement that describes the collateral, its inventory and proceeds, and HFC files the statement in the appropriate state office. Using the same collateral, Agile

  115. math

    A blue light every 30seconds. A red light blinks every 40seconds. If both lights blink at exactly 1:00pm, at what time will they blink at the same time again?

  116. Language

    Hi! So I am having a hard time in Chinese class. Paying Attention that is. My teacher lets all the students goof off, and it's hard to pay attention. She doesn't care if we are on our phones, so it's a BIG temptation. I know that if I payed attention in

  117. English

    I have to change the following sentence from passive voice to active voice and I'm having a hard time. Academic performance is influenced by peer pressure due to socializing negatively, lowering grades, and not staying on task.

  118. Physics

    At the bottom of an old mercury-in-glass thermometer is a 43-mm3 reservoir filled with mercury. When the thermometer was placed under your tongue, the warmed mercury would expand into a very narrow cylindrical channel, called a capillary, whose radius was

  119. English

    In which one of the following sentences does an adverb modify an adjective? A. Mark was dressed properly. B. Lucy danced tirelessly. C. His appearance gr3atly affected Candace. D. His shirt was extremely tight I think the answer is "D"

  120. Chemistry

    N2O5 + H2O ---> 2HNO3 The reaction is first order in each reactant. Write the rate law for the reaction my guess rate= k[N2O5]^1[H2O]^1

  121. Chemistry

    What is the density of 3.40 liters of hci

  122. Physical Science

    Greyhounds can accelerate at 7/m/s2 at a start of the race . How much force does it take a 35 kg dog to produce this acceleration?

  123. Human Services

    Mandie a new social worker in a residential treatment facility for adolescent teens, notices a disparity between the privileges given to the white residents as opposed to the American African residents. Since she is new, she begins to ask subtle questions

  124. 7th grade math Ms. Sue

    2. 6x + 29 = 5 (1 point) –4 –18 204 –144 9. Raymond buys bottles of water at $2.10 each and a large pizza at $12.99. The total cost was $21.39. How many bottles of water b did he buy? (1 point) 2.10b + 12.99 = 21.39; 4 bottles 2.10 + 12.99b = 21.39;

  125. physics

    A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal. The girl, boy and the sled have a mass of 160 kg. The coefficient of static friction is 0.28 and the coefficient of kinetic friction

  126. Physics

    Multiple-Concept Example 11 deals with a situation that is similar, but not identical, to that here. When 4620 J of heat are added to a 0.194-m-long silver bar, its length increases by 6.14 x 10-3 m. What is the mass of the bar?

  127. physics

    A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal. The girl, boy and the sled have a mass of 160 kg. The coefficient of static friction is 0.28 and the coefficient of kinetic friction

  128. Math

    x^2 + 9y^2 = 37 x - 2y = -3

  129. algebra

    i have 8 yards of fabric. how many yards of fabric will i have left over if i made 3 small costumes with 2 5/8 yards

  130. american history

    During the Great War, the Food Administration was headed by

  131. Science

    What is the most common state of matter?

  132. Physics

    To help prevent frost damage, fruit growers sometimes protect their crop by spraying it with water when overnight temperatures are expected to go below the freezing mark. When the water turns to ice during the night, heat is released into the plants,

  133. Chemistry

    All isotopes of technetium are radioactive, but they have widely varying half-lives. If an 800.0 g sample of technetium-99 decays to 100.0 g of technetium-99 in 639,000 y, what is its half life

  134. Science

    where are electrons located on an atom?

  135. Chemistry

    A 208 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 h. What is the half-life of this radioactive isotope?

  136. Physics

    A bubble of air, 0.010 m^3 in volume, is formed at the bottom of a lake which is 30.0 m deep and where the temperature is 8.0 C. The bubble rises to the surface, where the water temperature is 26 C and where the pressure is atmospheric pressure. What is

  137. science

    where does bonding occur in an atom?

  138. science

    how are the elements on the periodic table organized?

  139. Chemistry

    Thallium-208 has a half life of 3.053 min. How long will it take for 120.0 g to decay to 7.50 g?

  140. math

    write the fraction that names the number of days in the week that have a total of 6 letters

  141. science

    what is an isotope?

  142. Chemistry

    If the half life of Iodine-131 is 8.10 days, how long will it take for 120.0 g to decay to 7.50g?

  143. science

    what is an ion?

  144. Urgent Please helpSustainable Urban Infrastructure

    What would be the range of impact of an individualized travel marketing program that covers 200,000 workers in Denver by 2022? The program would inform workers about mass transit options. Assume each worker drives 17.5 miles one way, 5 days a week with an

  145. Chemistry

    Chromium-48 has a short half-life of 21.6 h. How long will it take 360.00 g of chromium-48 to decay to 11.25g. Please help me

  146. Biology

    I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of island biogeography. How do I know what small habitats exist around my

  147. Physics

    A server at a diner slides a 0.521 kg root beer from the end of the counter to a thirsty customer. A force of friction of 1.32 N brings the drink to a stop right in front of the customer. What is the coefficient of kinetic friction between the glass and

  148. maths --plse help me..

    A man drives fom the origin to his destination in his car at the speed of 24km/hr and reaches 5 minutes late.Next day he drives from the same origin to the same destination with a speed of 30km/hr and reaches 4 minutes early.Find at what distance is the

  149. Chemistry

    If the half-life of uranium-235 is 7.04 (times) 10 (to the eight power) 8 y and 12.5 g of uranium-235 remain after 2.82 (times) 10 (to the ninth power) y, how much of the radioactive isotope was in the original sample?

  150. Chemistry

    If the half-life of uranium-235 is 7.04 (times) 10 (to the eight power) 8 y and 12.5 g of uranium-235 remain after 2.82 (times) 10 (to the ninth power) y, how much of the radioactive isotope was in the original sample?

  151. Statistics

    Suppose that the population of weights of airline passengers has mean 150 lbs. and standard deviation 25 lbs. A certain plane has a capacity of 7,800 lbs. (a) What is the probability that a flight of 50 passengers will exceed capacity it? (b) If we wish to

  152. chemistry

    A 1.252g sample containing iron dissolved and converted to Fe followed by ADDITION OF 25ML OF 0..01m K2CR2 07. THE EXCESS K2CR207 REQUIRED 6.85ML OF 0.015m SN2+. Find the percentage fe3 04 fw 213g/mol in the sample. Who helps me

  153. Calculus

    lim x->2 (((1/(sqrt(2+s))-1)/(s+1))

  154. Finance

    Michigan Corporation purchased a new truck on January 1, 2013 for $55,000 cash. Michigan estimated salvage value of $10,000 at the end of the useful life of 5 years. On January 1, 2015 Michigan had to replace the engine of the truck paying $4,500 cash. Due

  155. Biostatistic

    A study is conducted in patient with HIV. Lower CD4 count is associated with advance disease. The researcher is interested in finding out the relation between supplement vitamins and CD4 count. A multiple regression analysis is performed relating CD4 count

  156. GRAMMAR

    WRITE AN ARTICAL ABOUT CALIFORNIA GOLD RUSH

  157. math

    If f(x)=2x+1/x-3 and g(x)=1-x/2 Show that f(g)(x)=g(f)(x)

  158. research paper

    Documentation errors have always been part of the health care profession. Some people in the medical field believe that many of these errors are the resultof using abbreviations in handwritten documentation related to patients. Therefore, accreditation

  159. Chemistry

    How many atoms of O are in 4 moles of (NH4)3PO4 - 6H2O? The answer is 2.41x10^25 I have no clue how to arrive at this answer.

  160. Chemistry

    Health regulations stipulate that the amount of arsenate in drinking water be no grater than 10 parts per billion (ppb) arsenic. If the arsenic present is arsenate, AsO4^-3, what mass of sodium arsenate would be present in a 1.00 L sample of drinking water

  161. Math

    Charlie paid for his purchases with a $50.00 bill. He paid $2.34 sales tax on his purchases and received $8.70 in change. If Charlie bought 8 items what is the average cost of one item without tax?

  162. special scene analysisand reconstruction

    12.there are three types of pretending in children's dramatic play: pretending with regard to a role, pretending with regard to an object, and pretending with regard to an action. these three types of pretending were described by researcher? a.lev vygotsky

  163. math ALG 2! EASY QUESTION

    5 examples of what you find slope to be

  164. maths --plse help me..

    find 6 no.s between 2/3 and 6/7.

  165. Adv. Geometry

    5. Find the area of the regular hexagon.

  166. Science

    why have the jet streams moved north because of global warming?

  167. Math

    A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minuite. For how many seconds is the sign on in 5 minutes?

  168. Physics

    You are in a boat that is traveling across a river from east to west at 4.0 m/s. the river runs north at 3.0 m/s. what is the resultant velocity of the boat?

  169. chemistry

    a gas occupies a volume of 5.00L at 27 degreesC and 742 mmHg. if the volume is held constant and the temperature is increased by 2 degreesC, what is the final pressure of the gas?

  170. Spanish

    Where is the accent? And what is the rule for placing the accent? Estoy bebiendolos.

  171. Biostatistic

    A study is conducted in a patient with HIV.Lower CD4 count is associated with advance disease. A researcher is interested in the association between vitamin supplement and CD4 count.A MULTIPLE REGRESSION ANALYSIS is performed relating CD4count to the use

  172. physics

    A person exerts a force of 6.0 N at a point which is 90 cm from the hinged side of a door. If the torque is 5.2 N m then determine the angle between the force vector and the line that runs directly from the point to the hinged side.

  173. Math

    Alyssa, Bert, and Cara are running for school president. Alyssa receives two-sevenths of the votes. Bert receives sixty-five percent of the remaining votes, and the rest of the votes go to Cara. If Cara receives 315 votes, how many votes were there in all?

  174. calculus

    The line y+x=9 intersects the curve y=x^2-2x+3 at the points P and Q . (a) Find the coordinates of P and Q . (b) Sketch the line and the curve on the same set of axes. (c) Calculate the area enclosed by the line and the curve.

  175. problem solving

    You purchased 18 karat gold chain that weights 15 grams. How much gold did you purchase in grams? In carats? (1 carat=0/2 grams)

  176. Physics

    You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?

  177. Physics

    You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?

  178. Chemistry - solubility, not "Methode Champenoise"

    Is CO2 soluble in ethanol? I know that CO2 is nonpolar, so that means it's soluble in nonpolar solvents, but CO2 is soluble in H2O. H2O is polar. Also, if CO2 were obeying Henry's Law, would it be soluble in ethanol at a high pressure?

  179. Math

    For f(x) = 1/2sin2(x-90°) What are the transformations? The 1/2 means a vertical compression by a factor of 1/2 And (x-90°) means there's a phase shift right 90° But what does the 2 mean? The one immediately left to the (x-90°). Does it mean a

  180. Physics

    Suppose you put a 100 W light bulb in a container of water and use it to heat the water. How long would it take to raise the temperature of a gallon of water at 25 C to 90C? Please explain!

  181. Physics

    Rather than taking the stairs, Javier gets from the second floor of his house to the first floor by sliding down the banister that is inclined at an angle of 30.0 degrees to the horizontal. If Javier has a mass of 49.1 kg and the coefficient of kinetic

  182. physics

    A hockey puck has a mass of 0.118 kg and is at rest. A hockey player makes a shot, exerting a constant force of 28.0 N on the puck for 0.16 s. With what speed does it head toward the goal?

  183. math

    What is the value of x if the perimeter of a rectangle is 38cm.?

  184. Math

    13 25 19 32 66 22 19

  185. PHYSICS

    how far will a 1000kg car travel in 10 sec if it is accelerated from rest by a force of 5000N

  186. College Statistics

    What would be the range of impact of an individualized travel marketing program that covers 200,000 workers in Denver by 2022? The program would inform workers about mass transit options. Assume each worker drives 17.5 miles one way, 5 days a week with an

  187. math

    12/25 x 5/21 in simplest form

  188. PHYSICS

    If it take a force of 10,000N to accelerate a car with a mass of 1250KG at a rate of 6m/s^2, what is the force of friction acting against the car?

  189. Math

    13 25 19 32 66 22 19

  190. physics

    An object is placed 3cm in front of a diverging lens of focal length of 6cm. the heihgt of the object is 1.5 cm. calculate the image distance and height of the image.

  191. college physics

    a large cuckoo clock has a pendulum with a period of 1.0 sec. The clock loses 10 min a day. how would you fix it? (Hint: change l) a. Find the length l of the pendulum. b. How much adjustment in l, up or down, is needed?

  192. biostatistic

    is it true that sample size required to detect an effect size of 0.25 is larger than the sample size required to detect an effect size of 0.05 with 80% power ansd a 5% level of signisicance?

  193. Chemistry

    Compute the volume of helium at 1.0 atm and 298 K that will be collected if 2.5 g of 222Rn is stored in a container able to expand to maintain a constant pressure for 15 days. Assume that 222Rn decays to 218Po with a half-life of 3.824 days.

  194. maths --plse help me..

    two adjacent sides of a parelellogram are 24 cm and 18cm .if the distance between the longer side is 12 cm then the distance between the shortest side is

  195. physics

    A rule of thumb for automobile collisions against a rigid barrier is that the collision lasts about .11 seconds, for any initial speed and for any model of automobile. accordingly, the deceleration experienced by an automobile during a collision is

  196. 7th grade language arts Ms. Sue please

    14. Identify a prepositional phrase in the following sentence from the story: "If we don't play today, and we lose in the playoffs next week, we'll have played exactly half of a ten game schedule." (1 point) in the playoffs if we don't we'll have played

  197. Physical Science

    Bill hit a ball with an acceleration of 40 ms2.The mass of the ball is 0.5kg. What is the force?

  198. Science/Biology

    True or False. The volume of the lungs is the most important factor in determining their efficiency.

  199. english

    In the third century, bands of savage barbarians repeatedly broke through the frontier defenses of the Roman province of Gaul,_________the countryside with fire and sword, and either slew or carried off the____ a. scanned..partisans b. pacified..vagabonds

  200. 7th grade language arts last Ms. Sue please

    19. Which of the following shows the correct punctuation? (1 point) Wow that was close! Oops! I think I left your book at home. Well! Of course she didn't mean it. Ouch, this really hurts. 20. Identify the demonstrative adjective in the following sentence:

  201. physics

    suppose that a seat-belted mother riding in an automobile holds a 10 kg baby in her arms. the automobile crashes and decelerates from 50km/h to 0 in .1 s. what average force would the mother have to exert on the baby to hold it?? do you think she can do

  202. maths --plse help me..

    In a purse there are 20-rupee notes 10-rupee notes and 5-rupee notes. the number of 5-rupee notes exceeds two times the 10-rupee notes by one. the 20-rupee notes are 5 less than the 10-rupee notes. if the total value of the money in the purse is Rs185 find

  203. physics

    suppose that a seat-belted mother riding in an automobile holds a 10 kg baby in her arms. the automobile crashes and decelerates from 50km/h to 0 in .1 s. what average force would the mother have to exert on the baby to hold it?? do you think she can do

  204. college algebra

    Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. For example, if you were asked to graph y= x^2+11 using transformations, you would show the graph of y = x^2 and the graph

  205. Chemistry..

    How many O atoms are there in a mole O2? My answer: 6.02*10^23

  206. Geometry

    A 38 foot tree casts a 16 foot shadow what is the angle of elavation of the sun to the nearest degree?

  207. math

    r a particular value, this table gives the percent of scores between the mean and the z-value of a normally distributed random variable. What percent of the total population is found between the mean and the z-score, assume z = 2.57.

  208. Algebra

    During a hurricane evacuation from the east coast of Georgia, a family traveled west. For part of the trip, they averaged but as the congestion got bad, they had to slow to If the total time of travel was 7 hours, how many miles did they drive at the

  209. geometry

    an A-frame house is 45 feet high and 32 feet wide. find the measure of the angle that the roof makes with the floor. Round to the nearest degree.

  210. 3rd grade math

    Enzo and Eric are sharing a pie. If Enzo eats 1/3 of the pie and Eric eats 1/5 of the pie, is there more than 1/2 of the pie remaining?

  211. Geometry PLEASE HELP ME

    What is the range of possible values for x? The diagram is not to scale. Quadrilateral ABCD with diagonal from vertex B to vertex D. Sides AB and BC are congruent. Side AD is 22 units. Side DC is 30 units. The measure of angle ABD is given by 2x. The

  212. ENGLISH II HEEELPPPP

    Is this sentence a parallel, if so how can you write it mor simpler? Fire can be friendly or a foe, depending on the situation.

  213. Geometry PLEASE HELP ME

    ABC has vertices A(0, 6), B(4, 6), and C(1, 3). Sketch a graph of ABC and use it to find the orthocenter of ABC. Then list the steps you took to find the orthocenter, including any necessary points or slopes you had to derive.

  214. english 3

    Is this a parallel sentence? If so how can it be written more simpler. The space shuttle was both a marvel and huge.

  215. Geometry B

    A solid has 10 faces: 4 triangles;1 Square; 4 hexagons; and 1 octagon, how many vertices does the solid have?

  216. Chemistry

    Hi, i'm really desperate! could anyone please help me with this question, I'm stumped. 'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is

  217. 7th Grade Literature

    Could someone please give me some examples of the following peices of grammar? modifiers articles prepositions interjections Thank you very much!

  218. 8TH GRADE ENGLISH

    we are working on using verbs correctly, so is this sentence correct? (u either use:sit,sat, or set): The newspaper SAT on the table all afternoon last Sunday. is this correct?

  219. Math

    A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 38 said they drove alone. 34 rode in a carpool. 33 rode public transportation. 9 used both carpools

  220. math

    Give the numbers of elements in the regions marked I, II, III, IV, V, VI, VII, VIII in the figure. |U| = 300, |A| = 30, |B| = 18, |C| = 16 |A¿B| = 4, |A¿C| = 3, |B¿C| = 6, |A¿B¿C| = 2 Give the numbers of elements in the regions marked I, II,

  221. Chemistry PLEASE HELP!!!

    'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume of NH4Cl solution required to achieve a buffer at ph=9.5? Ka of

  222. English

    Check? These right? 1. In the bitter cold, (he, him) and Dad struggled to save the orange crop. In the bitter cold, he and dad struggled to save the orange crop. 2. (Her and me, She and I) have joined the Shutter and Lens. She and I have joined the Shutter

  223. math ALG 2!

    5 examples of what you find slope to be

  224. Buisness Law

    In Reno v. Condon, Attorney General of South Carolina, the case in the book addressing whether Congress could prohibit states from selling personal information of citizens without consent, the U.S. Supreme Court ruled that: a. The Driver’s Privacy

  225. Physics

    I'm also stumped by this one: 3. A bimetallic strip (117 cm by 1 cm by 0.01cm) has aluminum (a = 23x10^-6 1/Celsius) on one side and has steel (a= 12x10^-6 1/Celsius) on the other. It is perfectly straight at room temperature (20 celsius). What change in

  226. math

    if i roll adie 30 times which no will come up the most

  227. chemistry lab

    When determining the molar mass of a volatile liquid by heating the liquid and then using the condensed, volatile vapor's mass, why do volatile liquids with lower boiling points give better results? Also, what effect would the formation of dimers have on

  228. Physics

    At the bottom of an old mercury-in-glass thermometer is a 43-mm3 reservoir filled with mercury. When the thermometer was placed under your tongue, the warmed mercury would expand into a very narrow cylindrical channel, called a capillary, whose radius was

  229. calculus

    I need help solving the following problem. Could someone please help me and explain how to work the equation. Thanks in advance. [intergral x sqrt3x dx I hope this makes sense

  230. college algebra

    Question 638522: Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. For example, if you were asked to graph y= x^2+ 1 using transformations, you would show the graph of y = x^2

  231. math

    Given that h(x) =x+1/x-2 and g(x)=4-x. Find hg(x) and find gh(x)

  232. Writing

    What is the predicate of this sentence,Henry and Mudge hear something.Is hear something the predicate

  233. Physics

    A solid block of water (m = 10 grams, Ti = -4 degrees Celsius) is shrink wrapped in an ultra thin super plastic (that has absolutely no effect on the interaction between its contents and the surrounding environment) and is placed as ammo inside a spring

  234. math

    How do you express 400 yards in 53 seconds as a unit rate?

  235. Introduction to High School

    All of the following are characteristics of an effective study environment EXCEPT: A. a relaxing area such as your bedroom B. comfortable and balanced temperature C. ample amounts of natural light D. a deck stocked with supplies

  236. physics

    A lawn roller is pushed across a lawn by a force of 103 N along the direction of the handle, which is 22.5° above the horizontal. If 63.0 W of power is developed for 90.0 s, what distance is the roller pushed?

  237. Math

    The measurements of a meadow were taken at 30 ft intervals. Use Simpson's Rule to estimate the area of the meadow with the following measurements: 76 ft, 118 ft, 130 ft, 143 ft, 139 ft, 136 ft, 137 ft, 139 ft, 130 ft, 122 ft, 60 ft

  238. PHYSICS ~so confused~

    so i'm going to try my hardest to type this out. which of the following system of forces provides the block the highest net force? a.) 11N--->[box][box][box][box]

  239. physics

    A student librarian picks up a 2.2 kg book from the floor to a height of 1.05 m. He carries the book 8.3 m to the stacks and places the book on a shelf that is 0.35 m above the floor. How much work does he do on the book?

  240. Math

    Write five 7-digit numbers that are even. The sum of the digits in each number is 29.

  241. Chemistry

    a 0.451 L solution of 1.71 ascorbic acid (ka1=7.9E-5, ka2=1.6E-12) is titrated with 1.35 M NaOH. What is pH when 0.9540 L of NaOH is added?

  242. physics

    a ball is thrown vertically upward at a speed of 45 m/s. how long does it take to return to the ground?

  243. statistic

    a restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random sample of twelve account is selected, resulting in a sample mean of $220 and a standard deviation of $12. Use a= 0.05. what is

  244. math

    Given that h(x)=x+1/x-2 and g(x) =4-x. Find h(g)(x) and find g(h)(x). P.S. Thanks for the correction Steve.

  245. AP us history

    I have the answers will you just tell me if I'm right? This is for my final study guide. The Compromise of 1850 affected which states an/or Territiries? A. Texas, New Mexico, California B. Utah, Texas, California C. CALIFORNIA, OREGON, AND MISSIOUR D.

  246. Chemistry

    Consider a 0.71 M solution of each of the following salt dissolved in distilled water. Will the solution by basic, neutral, or acidic? KI= NH4NO2= (CH3CH2)3NHNO2= (CH3CH2)2NH2ClO4=

  247. philosophy

    explain necessary and sufficient conditions and how providing these is one approach to defining a term

  248. the wreck of the hesperus

    what is an example in the poem for an assonance

  249. PHYSICS

    How much would the rope stretch to break the climber's fall if he free falls 2m before the rope runs out of slack? k=1.40x10^4N//m mass of man= 90 kg I forgot how to use conservation of energy for this. I tried it, but I did it wrong.

  250. math

    dicks had a 1 day sale. the original bike price was $325. on sale the same bike was $276.25. what is the percent reduction for this sale?? thxx

  251. physics

    Can you find the pressure exerted on the floor by the heel if it has an are of 1.50 cm^2 and the woman's mass is 55kg?

  252. ENGLISH

    Do you know any websites that might help with the 6 troublesome verbs: sit-sat,lie-lay, rise-raise,...

  253. Chemistry

    Here is the phase diagram of water with attention given to phases at high pressure. Name all phases present at the markers 1, 2 and 3. Phases present at 1: Liquid I II III IV V VI VII VIII IX Phases present at 2: Liquid I II III IV V VI VII VIII IX Phases

  254. math

    What is the answer to 9:3::49:?

  255. Chemistry

    Question One The fictitious compound, pandemonium fluoride ( PnF2 ) has a Ksp value in water of 3.091x10^-9 M^3 at room temperature. Calculate the solubility of PnF2 in water. Express your answer in units of molarity. Question Two How would you expect the

  256. Science

    How does technology help people with diseases of the digestive system?

  257. Math

    I have a garden that is 50 ft x 18 ft and my friend has a garden that is 30 ft X 15 ft. Why is the area of my garden twice the size of my friend's garden?

  258. Chemistry

    Question One Lead chloride dissolves in water according to PbCl2(s) Pb^2+ + 2Cl^- (aq) The solubility in pure water has been measured to be 4.44g . L^-1 . Calculate the solubility product of lead chloride in pure water. Your answer should be in units of

  259. Chemistry

    The ΔHof of gaseous dimethyl ether (CH3OCH3) is –185.4 kJ/mol; the vapour pressure is 1.00 atm at –23.7oC and 0.526 atm at –37.8oC. a) Calculate ΔHovap of dimethyl ether. b) Calculate ΔHof of liquid dimethyl ether Any idead how to calculate for

  260. math

    what does the algebraic expression 6/[9+r] mean

  261. stat

    A sample consists of the following data 7,11,12,18,20,22,25. What is the sample variance?

  262. Chemistry

    The solubility of the fictitious compound, administratium fluoride ( AdF3 ) in water is 3.091x10^-4M . Calculate the value of the solubility product Ksp .

  263. Chemistry

    Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al ? (b) A common alloy composition used in airplanes is 4 at. % Cu -

  264. Chemistry

    The fictitious compound, pandemonium carbonate Pn(CO3)2 hase a Ksp=3.091x10^-9M3 in water at room temperature. Calculate the solubility of Pn(CO3)2 in an aqueous solution of 1.11 M pandemonium sulfate Pn(SO4)2 (aq) . Express your answer in units of

  265. Chemistry

    Consider the gold-platinum system which has a value of delta w of -4250 J/mole; (a) Calculate the enthalpy of mixing for a solution of 10% platinum and 90% gold. Express your answer in units of kJ/mole. (b) Is the dissolution of 10% platinum into gold an

  266. Math

    A tree that is 100 feet tall casts a shadow that is 150 feet long. Determine the angle at which the rays of the sun hit the ground, to the nearest degree.

  267. physics

    what depth of mercury creates a pressure of 1 atm?

  268. ENGLISH HELP!

    we are working on using verbs correctly: (we have to use either rise or raise): Esther BLANK a good point yesterday's meeting. please help me fill in the BLANK

  269. Calculus

    A bacteria culture contains 200 cells initially and grows at a rate proportional to its size. After half an hour the population has increased to 360 cells. (a) Find the number of bacteria after t hours. (b) Find the number of bacteria after 4 hours. I

  270. Mechanics of Materials

    the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.

  271. Math

    State the range of the function: f(x) = 5ex + 1 A) (0, ∞) B) (1, ∞) C) (-1, ∞) D) (-∞, ∞)

  272. Math

    Mr. Winter bought four packages of ground beef. The second package weighed three times as much as the first, and the third package weighed half as much as the second. The fourth package weighed fifteen ounces, which was three ounces more than the third

  273. math

    mr lee's garden is square shaped. he planted 100% of it. 1/3 of it was carrots. 1/3 of it was tomatoes. The remained 48 square feet was filled with melons. What is the length of mr lee's garden?

  274. Math

    (3+4)^0 + 3-5^-3 (-4)^-3 * (-2)^3 (23^3)^15

  275. chemistry

    write the reaction of propanal reacting with: CH3CH2NH2 and CH3MgClthen H2O/H+

  276. trigonometric problem

    Point A and B are on the same horizontal line with the foot of a hill and the angles of depression of these points from the top of hill are 32° and 22° respectively. If the distance between A and B is 80 meters, what is the height of the hill?

  277. Statistics

    Fire department response time is the length of time it takes a fire truck to arrive at the scene of a fire starting from the time the call was given to the truck. Response time for Gabble Fire Department follows a mound shaped and symmetric distribution.

  278. differentiation

    find dy/dx if xy log(x+y)=1

  279. math

    susie went to the store. she spent half her money on groceries. she spent $13 on paper supplies. she still had 1/4 of the amount she started with. how much did she start with?

  280. 8th Grade English

    My teacher for my english class at school marked off for these questions and said I could redo it and turn it in tomorrow. I am for sure I did these right. Here are the questions. Underline the verb in the parentheses that agrees with the subject. 1. In

  281. 5th grade math (word problems)

    sorry,but I don't understand word problems - like what formula/expression to use. Here's the 1st problem: Rob practiced 3/5 of his music in 25minutes. About how long does it take to practice all of his music? I know that Rob has 2/5 left of music to

  282. Math

    A gas tank is 1/4 full. Abby adds 4 gallons and now it is 5/8 full. How many gallons does the tank hold?

  283. math

    find the range of the following sets of numbers: 247, 562, 498, 149, 568, 327, and 470.

  284. physics

    In another solar system, a 100,000 kg spaceship and a 200,000 kg spaceship are connected by a motionless 90 m long tunnel. The rockets start their engines at the same time, and each produces 50,000 N of thrust in opposing directions. What is the system's

  285. Writing

    Need some suggestions on how to create a argumentive rough draft apa style. Just need some examples. Here is what my assignemtn reads: Post the rough draft of your Research Topic and Source Evaluation Essay. In this essay you will present the topic you

  286. ASD

    the reaction a + b gives c+d is studied in a one litre vessel at 250 celsius. the initial concentration ?

  287. civil engineering

    the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.

  288. pre algebra

    1/2 (6x-4)= 4x-9

  289. Social Studies

    who controls the economy in a free enterprise system

  290. English

    I need to correct the verb in this sentence. If we would have had the engine tuned, I'm sure we would not be stranded on the highway now. Is this correct? If we had had the engine tuned, I'm sure we would not be stranded on the highway now.

  291. English

    Can some one check these? Sentence structures ; 1. In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer: Him 2. (Her and me, She and I) have joined the Shutter and Lens. My answer: she and I 3. Phil showed Danny and (I, me)

  292. 3rd grade language

    Circle the verb in each sentence. then think of an exact verb to make the sentence more interesting. rewrite the sentence using your exact verb. 1. One night, Zia concetta goes to the statue. 2. The giant statue moves off the pedestal. 3. the statue's

  293. biostatistic

    is it true that it is more difficult to reject a null hyputhesis if we use a 10 %level of significance compared with a 5% level of significance?

  294. physical Science

    How much force is required to give an object with mass of 20kg an acceleration of 12m/s2 ?

  295. Math

    Need an expression for width of a rectangle is 3 less than triple the length

  296. Chemistry HELP

    A 0.75–L bottle is cleaned, dried, and closed in a room where the air is 22oC and 44% relative humidity (that is, the water vapour in the air is 0.44 of the equilibrium vapour pressure at 22oC). The bottle is brought outside and stored at 0.0oC. just

  297. math

    fred has 4 shirts. three are blue and one is red. he has tan pants and blue pants. the probability that fred will have on a red shirt and blue pants is ----- out of ----------

  298. geometry

    an A-frame house is 45 feet high and 32 feet wide. find the measure of the angle that the roof makes with the floor. Round to the nearest degree.

  299. History

    Which group felt that Peter's reforms to the Russian Orthodox Church were too much change for the Church. Holy Synod Old Believers foreigners Streltsy Serfs Cossacks Not sure maybe Holy Synod but help would be greatly appreciated

  300. math

    how can i find four equivalent expressions example: 50+225

  301. Spanish..

    You did not answer the question completely though. So for the phrase "estoy bebiendolos" where is the accent placed? Don't you have to add an accent when the direct object is attached at the end of a progressive tense?

  302. Math

    Predict the number of digits in the quotient for 9,010 divided by 8

  303. biostatistic

    I am sorry, I do not know how one question is printed so many times. There was some problem in submission of question and when it is submitted, it is printed so many times.

  304. Chemistry

    The pressure of a 27o mL sample of gas is 102 kPa. What would be the pressure if the volume were increased to 378 mL?

  305. English 8R - Project Help!

    Slow Pace I can't put it into a definition, please help. This is for my rural area project (I already explain it to you before).

  306. biostatistic

    Is this statement true or false: when calculating correlation coefficient between two continous variables, the scale on which the variables are measured affect the value of the correlation coefficient.

  307. math

    Stephanie has $67 to spend at a store. The store currently has a sale where the sale price is 23% off the marked price. What is the highest marked price that Stephanie can afford? (Round to the nearest cent, or hundredth of a dollar.) can you please show

  308. Math

    x^2 + 9y^2 = 37 x - 2y = -3

  309. Math

    x^2 + 9y^2 = 37 x - 2y = -3 simultaneous equation by elimination

  310. Physics

    A 7.9cm diameter horizontal pipe gradually narrows to 5.9cm . When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0kPa and 21.0kPa , respectively. What is the volume rate of flow? in m3/s please help!

  311. math

    How to convert yd to in

  312. physics

    An object is placed 3cm in front of a diverging lens of focal length of 6cm. the heihgt of the object is 1.5 cm. calculate the image distance and height of the image

  313. Concrete on different temperature?

    if a section of concrete is poured for a road and the engineer leaves no gap between sections poured before and after the section in question , what will happen to concrete if the temperature varies from 0 C to 40 C ? Assume that the initial temperature of

  314. math

    what is 1 3/4 as decimal

  315. maths --plse help me..

    if 16 men can build a road of 9 km in 3 days then how many men can build 21 km road in 5 days.

  316. chemistry

    The theoretical yield of a reaction is 78.5 grams of product and the actual yield is 66.3 grams. What is the percent yield?

  317. SAT Prep (Algebra)

    If f(x) = 8x, neg 2 squared + 4x, 0 squared + 2x squared, what is the value of F(1/2)

  318. Science- Chemistry

    Determine the type of bonding in each substance. a. Zinc, Zn (s) b. Propane, C3H8 (l) c. Calcium Carbonate, CaCO3 (s)

  319. 7th grade language arts Ms. Sue please

    21. 14. Identify a prepositional phrase in the following sentence from the story: "If we don't play today, and we lose in the playoffs next week, we'll have played exactly half of a ten game schedule." (1 point) in the playoffs if we don't we'll have

  320. statistics

    A tobacco company claims that the nicotine content of its "light" cigarettes has a mean of milligrams and a standard deviation of milligrams. What is the probability that randomly selected light cigarettes from this company will have a total combined