Questions Asked on
May 22, 2012

  1. math

    Evaluate the following expressions for x=-3 13)–2x^2 = 14)(-2x)^2 = 10)Use the discriminant to determine the number of solutions of 3x^2-4x+6=0 8)Solve sqrt[3b] = -3

    asked by ALISSA
  2. math

    Evaluate the following expressions for x=-3 13)–2x^2 = 14)(-2x)^2 = 10)Use the discriminant to determine the number of solutions of 3x^2-4x+6=0 8)Solve sqrt[3b] = -3

    asked by ALISSA
  3. physics

    after a golf ball is hit it takes off with an initial speed of 23.4 m/s and at an angle of 43.0 with respect to the horizontal the gold field is flat and horizontal. neglecting air resistence how far will the ball fly

    asked by jen
  4. Physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by carly
  5. Physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by carly
  6. Math

    There are 20 cars in the parking lot. 2/5 of the cars are white. How many cars at white?

    asked by Merlia
  7. Math

    There are 20 cars in the parking lot. 2/5 of the cars are white. How many cars at white?

    asked by Merlia
  8. Pre-Calc

    How do I calculate the coordinates for the Polar equation r=4cos3theta ?

    asked by Anonymous
  9. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by sarah
  10. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by jen
  11. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by laura
  12. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by sarah
  13. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by kye
  14. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by jessica
  15. physics

    For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble

    asked by lucy
  16. physics

    small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance .

    asked by sophie
  17. english

    I wrote an essay because i'm apply to get into the honor's program. I'm supposed to write about who i was, who i am now, and who I would like to be. I would appreciate it if I got some feed back along with grammar correction. Is my essay even close to

    asked by jennifer
  18. physics

    A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force F then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle (theta)=(theta)0 and the mass has been raised

    asked by sophie
  19. world history

    what is this scrambled word tiedeynvcohdime

    asked by alyssia
  20. Chemistry

    Why doesn't a reaction occur when thiosulfate ions are added to solid silver iodide, but does occur when added to silver bromide?What role does the equilibrium concentration of silver play in this phenomenon?

    asked by Chamy
  21. Chemistry

    In experiment of silver, lead and mercury(I) chlorides mix with NH3, how does the heating of the lead precipitate present after the addition of NH3help identify the formula ?of the precipitate

    asked by Chamy
  22. Maths

    1.)1/x^2+x+1+2x/x^4+x^2+1=_______

    asked by srikar
  23. Algebra 2

    Combine The Rational Expressions and Simplify (3x-7)/(x^2-12x+27)-(3x-8)/(x^2-9x+18)+(x+2)/(x^2-15x+54)

    asked by Bob
  24. physics

    two balls of different masses are thrown vertically upward with same initial velocity .calculate the ratio of ratio of maximum height attained by them

    asked by monica
  25. English Help

    Write the plural possessive form of each noun for questions 1–3 1. friend 2. box 3. house

    asked by Mikayla
  26. statistics

    suppose 25% of the urban population is 18 years old or younger. five residents of that city are selected at random find the probability that at least two of the selected five persons are 18 years old or younger. please help me with this question !!!

    asked by nathalie
  27. Maths

    How many trees can be planted in an area of 90000 sq feet if vertically 8 feet distance and horizontally 3 feet distance is to be kept? Pl show the method of calculations.

    asked by J
  28. Biology

    - "problems that result as blood alcohol concentration increases" Basically, I'm supposed to put what page number the answer is on, and then what the answer is. I have the page number, yet the answer is no where on the page to be found. I've read it over

    asked by Gamzee :o)
  29. Maths

    If tan theta= 1/5 Simplify tan(540-theta) In the unit circle do I have to go clockwise or anti-clockwise from the fourth quadrant? Please help is needed for this

    asked by Jiskhaa
  30. physics

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand
  31. chemistry

    A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

    asked by bill
  32. Business math

    A plumber's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. He moves the same amount to fill the trench. What is his pay for this job?

    asked by Jagara
  33. Math

    A cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round to the nearest hundreth

    asked by Tina Clark
  34. Math

    The sum of the ages of Travis, Mac and Ellie is 44. Travis is 4 years older than Ellie and Mac is twice as old as Ellie. How old is each?

    asked by Ant14
  35. Math

    Jack is thinking of a number. Here are four facts about his number: a. It is a multiple of 3 b. it had three digits and is a palindrome C. It is odd D. At least one digit is 2 What number(s) satisfy the four properties of jacks number?

    asked by Frank C.
  36. statistics

    what is a critical value

    asked by Fakaapo. Suetusi
  37. maths

    Water is leaking out of a barrel. In the first hour, it lost half the number of litres it held, plus one litre. In the second hour, it lost half the remainder plus another litre. In the third hour, it lost half the remainder again, plus a further litre;

    asked by ann
  38. physics

    an aircraft is moving east with a speed of 510km/h at a height of 200m. at a certain distance,the sound of the plane as heard by a ground observer appears to be coming from a point vertically above him. where is the plane at this instant? explain with

    asked by anupriya
  39. physics

    at what angle must the two forces of 50 newton and 120 newton be acting so as to balanced by a force of 130 newton?

    asked by anupriya
  40. physics

    a car is moving on a horizontal frictionless road and reches base of an upslope . what should be the speed of the car at the base of the upslope so that it can just reaCH its top without external force applied to it.(length of slope=15m, angle of

    asked by anupriya
  41. physics

    two forces of 62N and 95N are acting on an object at an angle of30 degree and 60 degree from horizontal in opposite direction . find out total force experienced by the object in horizontal and vertical planes?

    asked by anupriya
  42. physics

    explain why microwaves are better carriers of signals for long range transmission of radio waves?

    asked by anupriya
  43. maths science,sst,hindi,english,economics

    one liter of water at atmospheric pressure ismixed with 9 liter of water of 25 degrees at an atmospheric pressure in an insulated tank .find the temprature of tank.options are 1)25 2)32.5 3)30 4) 24........pls. help

    asked by deepenti
  44. English

    Unscramble bssmyale

    asked by Donovan
  45. Chemistry

    The PH of a 1.3M HF solution is 3.18. What % of the acid ionized?

    asked by Lily
  46. Chemistry

    Propanoic acid has a Ka of 1.3 x 10^-5. What is the % ionization in a 3.0M solution?

    asked by Lily
  47. Chemistry

    HBrO3 has a Ka of 3.6 x 10^-6. What is the pH of a 2.0M solution?

    asked by Lily
  48. Chemistry

    a 2.0M solution of Hbr will have what pH?

    asked by Lily
  49. Chemistry

    Why do chloride ions increase corrosion?

    asked by Hannah
  50. math

    3x-(x+5)/2=x+8 what is the x?

    asked by Vlera
  51. physical sciences

    How many neutrons are in an atom of carbon with a mass number of 14? help please...

    asked by lalt
  52. algebra

    A rectangular window is 4x inches wide and 8x inches long. What is an expression for the distance from one corner of the window to the opposite corner? Give your answer as a simplified radical.

    asked by Anonymous
  53. albadea

    The concentration of iodide ions in a saturated solution of lead(II) iodide is __________ M. The solubility product constantof PbI2 is 1.4x10-8

    asked by ghado:))
  54. algebra

    If events A and B are independent, P(A) = 0.62, and P(B | A) = 0.93, what is P(B)?

    asked by jenny
  55. Math

    Adjusting a budget - Given the net income, the percent budgeted for two variable expenses, and the amount of an unexpected bill, determine if there is enough money in the variable expense items to cover the amount of the unexpected expense or if the bill

    asked by Cody Davidson
  56. Marine Biology

    Surface currents are created by wind and the Earth's rotation. What creates deep water currents?

    asked by Michelle
  57. Art

    Can you please help me check a few things, Writeacher? Thank you. 1)The two political parties which alternated in government were the Whigs and the Tories. 2) The Whig ministers' meetings developed into the cabinet led by the Prime Minister. 3) It is

    asked by John
  58. Calculus

    How do you use imlicit differentiation to differentiate e^(xy)? I have the problem "use implicit differentiation to find dy/dx. e^(xy)+ x^2 - y^2 = 10. I've gotten to the point whereI have d/dx(e^(xy)) + 2x - 2ydy/dx = 0, but I can't go any further because

    asked by Marissa
  59. Math

    Suppose you have binomial trials for which the probability of success on each trial is p and the probability of failure is q= 1-p. Let k be a fixed whole number greater than or equal to 1. Let n be the number of the trial on which the kth success occurs.

    asked by Chad
  60. Math

    On the leeward side of the island of Oahu, in the small village of Nanakuli, about 80% of the residents are of Hawaiian ancestry. Let n = 1,2,3.... represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in

    asked by Chad
  61. Mathematics I

    Evaluate definite integral from -2 to 0. Integral((x^2)(e^((x^3)/2)dx) Do those parentheses make sense? The power of e is x^3 divided by two. Can someone give me the first step, and I'll see if I can get it from there. I don't want to make you just do the

    asked by Hannah
  62. Foreign languages

    I hope you can check these two long-winded sentences.Thank you 1) Pamela is writing to her family to tell her mum what happened to her, by accusing her master of hsi behaviour. 2) While they were in the summer house, Mr B kissed her but she had never

    asked by John
  63. math

    Find n if S(sub n) is approximately 15,408.15.

    asked by Nelly
  64. math

    Twenty people apply for seven jobs that are available at fly by night aircraft company In how many ways could such a group be composed? After the seven have been selected, in how many different ways could five of them be assigned to the assembly

    asked by Jake
  65. math

    What is the gerund phrase and noun function of the gerund in these sentences: 1.Brett earns his income by repairing cars. 2.I enjoy playing the piano. 3.Her favorite pastime is entertaining friends. 4.She is successful in mimicking others' voices. 5.He

    asked by Brittty
  66. education

    projected instructional material and their uses

    asked by opara ngozi
  67. physics

    5. If a quantity increases as a second quantity decreases and decreases as the second quantity increases, the two quantities are said to be: A_Directly proportional B_Inversely proportional C_Completely unrelated D_Blue and red

    asked by Tomi
  68. Meterology

    What is the relative humidity when the air temperature is 75 degrees Fahrenheit and the Wet Bulb temperature is 65 degrees Fahrenheit?

    asked by Henry
  69. Physics

    A railroad car moves under a grain elevator at a constant speed of 3.70 m/s. Grain drops into the car at the rate of 580 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible? F = Ma -> R *

    asked by Dan
  70. Roles of the Early Childhood Professional

    Observation of children are useful for all of the following reasons EXPECT:

    asked by Sandra
  71. English

    He must like studying calculus. Whats the noun function?

    asked by Brittty
  72. physics

    A tennis ball is thrown horizontally at a speed of 10 m/s from the top of a building 78.4 meters high. How long does it take the ball to hit the street?

    asked by Elizabeth
  73. Physics

    A long pole is used to lift a window. If a vertical lift of 80N is needed to raise the window, what force must be exerted along the pole? Assume the pole makes an angle of 34 degrees with the vertical wall.

    asked by Lisa
  74. Biostatistics HW

    Consider again the data in problem #6. Suppose that in the aerobic exercise group we also measured the number of hours of aerobic exercise per week and the mean is 5.2 hours with a standard deviation of 2.1 hours. The sample correlation is -0.42. Exercise

    asked by Anonymous
  75. Math

    V=(1/3)*3.14*[(5/2)^2]*7

    asked by Franny
  76. Math

    What is the smallest positive integer n so that 3n squared is a multiple of 4

    asked by Naun
  77. Math

    Suppose that f(A,B,C) means A-2C + (1/2)AB A. Find f(2,3,-11) B. Find f(D,5,D) C. Find f(3,4,f(-5,7,4))

    asked by Cyndy f
  78. history

    Philadelphia, Pennsylvania was NOT _____.

    asked by diana
  79. Spanish

    33. "¿Quieres ayudarnos a _______ periódicos?" "No puedo. Tengo que estudiar esta tarde." a. ganar b. soler c. repartir d. desayunar C 35. "Tienes mucha hambre, ¿verdad?" "Claro que sí. Voy a comer ____ dos hamburguesas." a. según b. sin c. antes de

    asked by mysterychicken
  80. history

    Which is NOT true of the segregation laws passed after the Civil War?

    asked by diana
  81. Statistics

    A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?

    asked by Tammy
  82. vulindlela

    How smoking is a human factor that may cause ill health

    asked by Christy
  83. Math

    Charlie is making a toy silo for his children. The silos height is three times it's radius. He is also adding a dome shaped top that is a half sphere. If the total surface area of the silo, when assembled is 100 square inches , what is the height of the

    asked by Dorothy
  84. Geometry

    Triangle RSU has two of its points(R and S) on the sides of a circle. Line SU forms a secant ray that passes through the diameter of the circle. Angle S is 30 degrees, the measure of arc RS is 84 degrees, and RU is tangent to the circle at R. Find the

    asked by Paige
  85. math

    do you have the answers to exam 06044200

    asked by linda
  86. Intermediate Algebra

    Essay: show all work. Find the quotient: 49a^2-b^2/7a-b

    asked by brenda
  87. writing

    please read over my paper for errors?

    asked by willie
  88. Chem

    How many grams are in 2.6 moles of Maganese? What is the mass of 14.7 moles of H2O? What is the mass of 7.2 Liters of H2O?

    asked by helen
  89. CHEMISTRY

    2NaBrO3 reacts to 2NaBr + 3O2 How many grams of NaBrO3 are required to produce 19 grams of O3? How many liters of 02 are produced from 4 moles of NaBrO3? How many atoms of NaBr are produced when 1 mole of O2 is produced?

    asked by helen
  90. Life orientation

    In which ways can human/environment can affected by substance abuses?

    asked by Thabani
  91. Life orientation

    Recommendations on how to address substance abuses

    asked by Thabani
  92. Accounting

    Susan Kline works for Trend Press, a fairly large book publishing firm. Her best friend and rival, Lisa, works for Silver Books, a smaller publisher. Both companies issue $100,000 in bonds on July 1. Trend's bonds were issued at a discount, while Silver's

    asked by Karen
  93. phy

    Your instructor asks you to compare positive and negative reinforcement and explain your conclusions in class. What will you report?

    asked by danni
  94. math

    For the sequence 3,8,15,24,35.... find a formula for tsubn in terms of n.

    asked by Em
  95. religion

    Hello, for in the book of Phillipians in chapter 2 would it relate to the Ethical code of principal with psychologists under principle C integrity and for general principle would it be number 3 human relations thanks

    asked by Thomas
  96. Functions

    What's the best way to solve functions? I can do basic ones, but have trouble with the harder ones. I'm having trouble with the following: Inputs x 1, 2, 3, ? Outputs y 0, 2, 6, ? I have tried everything and can't come up with the equation. Please help!

    asked by Shelby
  97. math

    Find S(sub 73) for the arithmetic series 4 + 7 +10....

    asked by Kevin
  98. chemistry

    C25H52 + __38__ O2 -------> __25__ CO2 + __26__ H2O + energy a) Balance the equation. Count atoms below. ___________ carbon ___________ ___________hydrogen___________ ____________oxygen____________

    asked by Quinn
  99. Art

    Could you please check these sentences, too? Thank you very much. 1) The Augustan were interested in real life. As for politics/as far as politics is concerned, the two main political parties were the Tories and the Whigs. 2) The poor used to live in

    asked by John
  100. math

    Evaluate 7 Σ (-1)^k(k-1) k=2

    asked by Harper
  101. biology

    Need help with FOV area (mm2) totally confused? im confused i have the FOV diameter they are: 4x = 5 10x = 2 40x = 0.5 a classmate told me she thinks the area for 40 x is: pi(5/2)^2 = 19.6 not sure if that's true or how to do it for the low and medium,

    asked by jess
  102. isep - fisica

    b) quantidade de acelaracao no ponto b. o ponto b é um cursor que esta preso no cimo de uma barra que esta dentro de outra barra . como e que calculo a quantidade de acelaracao neste caso uma vez que ha acelaracao de coriolis

    asked by Diana
  103. 3 grade english ms sue

    srffixes rocky,foolish,rainy,childhood,selfish, treatment,movement,neighborhood, childish,parenthood,crunchy,bumpy, payment,sleepy,shipment opposites write the missing list word.it will be the opposite of the underlined word. 1- this lizard's skin is

    asked by dw
  104. math

    Find a decimal approx for S (sub 15) in the geometric sequence with first term 83 and common ratio 1.07

    asked by Meg
  105. 3 grade math ms sue

    use tools 1-when using fraction strips, how do you know that two fractions are equivalent? _______________________________ ______________________________ _______________________________ _________________________________ ________________________________ 2-

    asked by dw
  106. History

    What were the special characteristics of the population of Virginia in the seventeenth century and what accounted for them?

    asked by Sasha
  107. World History

    At the end of the eighteenth century, _______ had the largest economy in the world. A. India B. Spain C. China D. Britain I've researched this question like crazy, but I just can't seem to determine a clear answer. I know it's between China and Britain.

    asked by Jess
  108. Math

    What is the smallest integer n so that the square root of 3n is a multiple of 4

    asked by Dorothy
  109. History

    What were the causes of the War of 1812? Where did Republicans and Federalists stand on declaring and then fighting the war? What regional tensions did the war expose?

    asked by Brittany
  110. Chemistry

    Which of the following is exothermic? A.boiling of water B.person growing C.choppening of tree D.freezing of water

    asked by Yeneta
  111. Math

    A company charges $42 per cubic yard of concrete. How much will it cost to pour a sidewalk that is 45 inches wide, 70 feet long, and 4 inches deep?

    asked by Rosie
  112. Physics

    1) Which components remain constant throughout the motion? vx = x component of the velocity vy = y component of the velocity ax = x component of the acceleration ay = y component of the acceleration I know that ax and ay remain constant but I am not sure

    asked by Hannah
  113. algebra 1

    4/x-5 + 2/(x-5)^2

    asked by kathy
  114. Math

    2 part question 1) a cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round answer to the nearest hundredth. 2) if we collect rainwater in the cup in question 1 until the waters depth is 6 inches,

    asked by Rosie
  115. dressmaking

    EXAMINATION 04202500 ALTERATIONS AND FITTING I NEED TO CHECK 5 ANSWER, (1) The shoulder seam of the garment with a set-in sleeve is usually located so that it is (A) easily seen in a straight back view, (b) clearly visible in a straight front view.(C)in

    asked by brenda
  116. Foreign languages

    I urgently need you to revise these sentences. Thank you very much, Writeacher. 1) We are leaving for Rome tomorrow morning at 7.30 am. 2) We are meeting at the entrance of the bypass (ring road/orbital road) at 7.15 3) The bus journey will last about six

    asked by John
  117. Math

    find the surface area of a rectangular prism that is 3 1/2 feet by 4 1/4 feet by 6 feet

    asked by Anonymous
  118. physics

    What is the velocity of an object that falls from a cliff tot he ground which is 20,000 centimeters below?

    asked by Rena
  119. Math

    A 4in. by 5in. photo is enlarged by multiplying the length and width by 2. What is the new perimeter?

    asked by Anonymous
  120. Functions - more info

    Sorry, I forgot to enter all the info before. Below is the updated info for the problem. What's the best way to solve functions? I can do basic ones, but have trouble with the harder ones. I'm having trouble with the following: Inputs x 1, 2, 3, 4, 5

    asked by Shelby
  121. algebra 1

    simplify 3w-12/3w

    asked by kathy
  122. algebra 1

    w/7 - 7/w = 0

    asked by kathy
  123. algebra

    Two part question: Suppose a market research company finds that at a price of p=$25, they would sell x=56 tiles each month. If they lower the price to p=$20, then more people would purchase the tile, and they can expect to sell x=66 tiles in a month's

    asked by plz help
  124. Art

    Could you please have a look at these sentences? Thank you very much, Writeacher. 1)We'll go on a bus sightseeing tour on which we'll admire the most famous attractions. 2) We are given a lunch box (by the hotel). 3) In the afternoon we'll go to the newly

    asked by John
  125. algebra

    The costs of doing business for a company can be found by adding fixed costs., such as rent, insurance, and wage, and variable costs, which are the costs to purchase product you are selling. The portion of the company's fixed costs allotted to this product

    asked by plz help
  126. Physics

    Help, I know the answer is 4.8 X 10^-19, but I can not figure out how to do it or what formula to use. The question is "A charge moves a distance of 1.7 cm in the direction of a uniform electric field whose magnitude is 220 N/C. As the charge moves, its

    asked by Lisa
  127. pre calc

    log(x^2+2x-3/x^2-4)-log(x^2+7x+6/x+2)

    asked by sara
  128. math

    10 pesos = .909198 US dollars. Use estimation and rounding to find out how many US dollars equal 200 pesos. B) how many pesos approximately are 4 US dollars?

    asked by alandra
  129. Algebra

    Log to the base of 3 (x-4)=2

    asked by MINDY
  130. Antigone Literature

    Creon criticizes others for stubbornly refusing to change their minds. Why is this ironic? I believe its ironic because everyone is so caught up in what they think is right, including Creon. I just want another persons opinion on why they think its ironic!

    asked by Kate
  131. Cultural Anthropology

    Traditionally, a caste in India

    asked by Ronneckia
  132. math

    large fresh salad = $4.43 shrimp tomato cocktail = $7.39 hot dog and fries = $13.86 vanilla cheese- cake $6.97 cola $2.24 Do rough estimate to find out how much it will cost by rounding to the ones place and adding the amounts. Then decide you want to be a

    asked by alandra
  133. math

    4 shirts cost $76, what is the cost of 75 shirts.

    asked by Celest
  134. math

    translate the fact below from scientific notation to standard notation: A. 1.07 times 10 to the eighth power B. 7.07 times 10 to the second power C. 2.4 times 10 to the negative three power

    asked by alandra
  135. Math

    A 3m tall post casts a shadow 2m long . If a tree casts a shadow 9m long at the same time how tall is the tree ?

    asked by Sara
  136. math

    take the fractions below, write them in their simplest form, then come up with three equivalent fractions for each: A. 88/100 B. 24/30 C. 55/88

    asked by alandra
  137. writting out clock time

    How do I write 1 minute 45.9 seconds? Is it 1:45.9 or is that one hour 45.9 seconds?

    asked by Matt
  138. physics

    A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical

    asked by Adam
  139. math

    write 211 four different ways using exponents. Make sure at least one of your answers includes a negative sign and one of your answers invovlves multiplying exponents.

    asked by alandra
  140. math

    15840ft = _________mi 24640 yd = ________mi

    asked by Celest
  141. algebrall

    How do you solve 600x^2+600x+600=0

    asked by kim
  142. chemistry

    A 20.0 gram sample is a mixture of sodium phosphate ,sodium mono-hydrogen phosphate,sodium dihydrogen phosphate and sodium chloride. The sample is dissolved in 100.0 ml of deionized water and titrated with 1.5 M hydrochloric acid. The initial pH of the

    asked by bill
  143. Grade 11 Math

    I have two questions two forest fire towers, A and B are 20.3km apart. From tower A, the bearing of tower B is 70 degrees. The ranger in each tower observes a fire and radios the bearing from the tower. the bearing from tower A is 25 degrees and from tower

    asked by Billy Bob
  144. chemistry

    A sample of a saturated hydrocarbon is placed in a 1.0L vessel at 107oC. The pressure of the sample at these conditions is .40 atm. A stoichiometrically equivalent amount of oxygen is added to the vessel and the mixture is combusted. Following combustion,

    asked by bill
  145. algebra ll

    600(x^2+x+1) using the formula -b+/- sqrtb^-4ac/2a

    asked by kim
  146. math: advanced geometry

    a sphere has a volume of 12,348pi cubic inches. Find the surface area of the sphere.

    asked by kerry
  147. Geometry

    A regular hexagon is circumscribed about the ring surrounding the clock face. The diameter of the ring is 10in. Find the perimeter if the clock face. Please included work/steps to solve. Thanks!

    asked by Marisa
  148. circle inscribed

    --------------- QUESTION FOLLOWS -------------------------- Can someone Please help I definitely do not know how to do this. A)Find x, to find x you need to add the arc measures together and set the expression equal to the total degrees of circle then

    asked by lilman
  149. algebra 2

    Minnie and Steve have arectangular swimming pool that is 12 ft. wide and 20 feet long. They are going to build a tile border of uniform width around the pool. They have 160 sq. ft. of tile. How wide should the border be?

    asked by Carolyn
  150. writing

    when writing a letter to a pen pal, what is the closing? Please Write back?

    asked by Celest
  151. algebra

    i have to write a number in the block to make this true how do i get the answer for 70-30=40- please show me a example so i can complete my work

    asked by avonia
  152. geometry

    the radius of the base of the metallic rod is 2o centimeters and height 15 centimeters what is the volume of a cylinder

    asked by brad
  153. math

    How do I draw a figure with a perimeter of 15 cm?

    asked by Anonymous
  154. English

    What do you think he is doing? 1. I think he is playing computer games on the computer. 2. I think he is playing a computer game on the computer. (Which answer is right? Do we have to use the singular form or the plural form?)

    asked by rfvv
  155. geometry

    the radius of the base of the metallic rod is 2o centimeters and height 15 centimeters what is the volume of a cylinder

    asked by brad
  156. science

    why are plastic handles on frying pans safer to than metal handles

    asked by Katherine
  157. math

    The ratio of dogs to cats in a park is 4 to 5. If there are 63 dogs and cats in the park altogether then how many dogs are there?

    asked by taylor
  158. Geometry

    If the two lines are perpendicular, what is x + y 2y- 10 2x+1

    asked by Vivian
  159. college math

    Solve the quadratic equation by completing the square. x^2 + 14x + 35 = 0 and x^2 + 8x = 5

    asked by juliana
  160. to ms.sue

    my teacher said we cant use that.

    asked by Celest
  161. algebra

    A customer wants to make a teepee in backyard for his childrens. He plans to use lengths of PVC plumbing pipe for the suppports on the teepee,and he wants the teepee to be 10 feet across and 12 feet tall. How long should the pieces of PVC plumbing pipe be?

    asked by plz help
  162. English

    1. The man is drawing cartoons on a drawing board. He has a pen on his right ear. What do you think he is doing? (Would you check this writing?) 2. The dogs are playing with balls. 3. Each dog is playing with a ball. 4. The dogs are playing with a ball.

    asked by rfvv
  163. English

    1. Let's do some role play. You take the part of A, and you take the part of B. Don, will you start? OK. Good job.Then switch the role. Emily, this time, you should start first. 2. Let's roleplay. Don, play the part of A. Emily, play the part of B. Don,

    asked by rfvv
  164. to ms.sue

    my teacher said you don't know this person yet and it has 2 be please write back. she get s mad if we judge it differently, i don't know why.

    asked by Celest
  165. Science

    A man has a mass of 66kg in the Earth. What is his weight?

    asked by Kyler
  166. English

    Be quiet. Listen to me. Emily, calm down. You are so noisy. Stand up and go to the back. You should remain at the back for the rest of the class. Got it? (Would you check the sentences? Correct errors, please.)

    asked by rfvv
  167. Computer programming

    Set k=1 While k

    asked by Micael
  168. to ms.sue

    thank you. :)

    asked by Celest
  169. algebra

    3x+11=-4 please help idk what to do???

    asked by shaylin
  170. physics mc question!!!!HELP

    Question # 1 : It a particle increases its speed by a factor of 2, what happens to the kinetic energy? a)doubles b)cuts in half c)increases by a factor of 4 d)depends on whether or not work is done on the particle Question # 2: An object falling near the

    asked by lilly
  171. Chemistry

    what elements are found in the following substances? C6H12O6, NaCl, NaHCO3

    asked by KK
  172. algebra

    it will take 100 persons - hours to plant trees around a middle school. how many hours will it take 20 people to plant trees?

    asked by shaylin
  173. English

    1. She is talking with her friend in a boat/on a boat. (Which preposition should we use? 2. They are jumping from the ground. 3. They are jumping on the ground. (Which preposition do we have to use? Are both OK?)

    asked by rfvv
  174. algebra!HELP!

    a right triangle has legs 12 ft. and 5 ft. what is the length of the hypotenuse?

    asked by shaylin
  175. math

    three times a number

    asked by Anonymous
  176. programming

    A retail company assigns a $5000 store bonus if monthly sales are more than $100,000 otherwise a $500 store bonus is awarded. Additionally, they are doing away with the previous day off program and now using a percent of sales increase to determine if

    asked by Jeniffer
  177. History

    What is the benelli super 90 12 gauge submachine gun?

    asked by Anonymous
  178. statistics

    How do you calculate the slope and intercept of a regression?

    asked by Grant
  179. algebra

    how do u write 3.45 * 10 to the 8 power in standard number?

    asked by shaylin
  180. Geometry (Mathematics)

    The length of a rectangle is 15 m longer tan it's width. The perimeter of the rectangle is 74 cm. Find the length and width.

    asked by Kevin
  181. political science

    the system of government in the state of CA can be described as : a.unitary system b.federal system 18).the constitution grants state governments: a. enumerated powers c.enumerated and defined powers

    asked by micah
  182. chemistry

    a student determines the molar mass of methanol by the method used in this experiment. she found that the equilibrium temperature of a mixture of ice and pure water was .4 degrees Celsius on her thermometer. when she added 10g of her sample to the mixture,

    asked by liz
  183. computers

    Write a program that will ask the user to enter a person's age, weight and birth month. Your program will compare the entered value to the following and print the appropriate response. Be sure to use modules. The secret answers: age=25 The comparison: if

    asked by Jeniffer
  184. Reading

    The best physical activity is one that is a) enjoyable enough to bring a snack b) enjoyable enough to go to sleep c) enjoyable enough to do regulary d) all of the above

    asked by Anonymous
  185. programming

    A hotel’s occupancy rate is calculated as follows: Occupancy rate = number of rooms occupied total number of rooms Write a program that calculates the occupancy rate for each fl oor of a hotel. The program should start by asking for the number of fl oors

    asked by AB
  186. Word Problems

    Joe has $19 more than Erin, Shelly has twice as much as Erin; Colin has $6 less than Erin has. In total, the students have $68. How much money does each separate student have?

    asked by CA
  187. mc questions !

    Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which

    asked by emmie
  188. phyics mc Q

    Q:Which of the following are expressions for a type of potential energy? ( this question can have more than one answer !!!! ) a)mg(h_F-h_i) b)F_f*d c)(1/2)mv^2 d)(1/2)k*(final_x^2-initial_x^2) Q: If you are trying to figure out how high you can jump, which

    asked by emmie
  189. Algebra 2

    If Graham runs up 6 steps of the escalator, then it takes him 46.5 seconds to reach the top of the escalator. If he runs up 13 steps of the escalator, then it takes him only 36.0 seconds to reach the top. How many seconds would it take Graham to reach the

    asked by Robbie
  190. math

    On a loan of $3,500, Manny had to pay $280 interest. The Interest was what percent of Manny's loan?

    asked by Jason
  191. College Math

    Add 5 1/4 + 3 1/9

    asked by Lourane
  192. College Math

    Subtract 10 3/5 - 2 10/11

    asked by Lourane
  193. statistics college

    suppose we have a set of blood pressure set with a mean of 120 systolic and a sample standard deviation of 20 points assume a normal distribution of what two values should 95% of all systolic bp lie

    asked by melba
  194. Math

    what is (7.21-3.13)4th power divided by 0.6-0.4?

    asked by Cheryl
  195. statistics college

    find the range standard deviation and variance for following sample data 2,11,81,29,22,59,78,71,21,43,99,12,38,74,56,81

    asked by melba
  196. math

    Lois got 27 problems right on a math test. If this is 90% of the test, how many problems were on the test?

    asked by Jason
  197. statistics college

    SATI SCORES AROUND THE NATION HAVE A MEAN SCORE AROUND 500 A STANDARD DEVIATION OF ABOUT 100 POINTS AND ARE APPROXIMATELY NORMALLY DISTRIBUTED A PERSON WHO SCORES A PERFECT SCORE OF 800 ON THE SAT I HAS APPROXIMATELY WHAT PERCENTILE RANK WITHIN THE

    asked by melba
  198. chemistry

    If 500.0 mL of hydrogen are collected over water at 20.0 C and 99.3 kPa what will the volume of the dry gas be at STP?

    asked by Anonymous
  199. programming

    Write a program that will ask the user to enter a person's age, weight and birth month. Your program will compare the entered value to the following and print the appropriate response. Be sure to use modules. The secret answers: age=25 The comparison: if

    asked by Jeniffer
  200. math

    Tia has 24 black or white buttons. She has 10 more white buttons than black buttons. How many white buttons does Tia have?

    asked by John
  201. physics

    A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 580 {rev/min}. What is the radial acceleration of the blade tip, expressed as a multiple of the

    asked by Kelly
  202. Chemistry

    What is the mass of 14.7 moles of H2O? What is the mass of 7.2 Liters of H2O?

    asked by Helen
  203. physics

    A lazy Susan consists of a heavy plastic disk mounted on a frictionless bearing resting on a vertical shaft through its center. The cylinder has a radius R = 10 cm and mass M = 0.24 kg. A cockroach (mass m = 0.015 kg) is on the lazy Susan, at a distance of

    asked by marcel
  204. Algebra 2

    A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is -1.5 Find the y-intercept of the linear regression.

    asked by Juan
  205. social studies

    what does this sentence mean im doing a project on queen eilzabeth i *how did his or her work signal a rebirth or show an interst in humanity?

    asked by Anonymous
  206. Biomaterials

    What is the theoretical density of tantalum (Ta) with the following characteristics: Crystal structure:     BCC Atomic radius:         14.6 Angstroms Atomic weight:        180.9 g/mol density needs to be in g/cm^3

    asked by Nate
  207. math

    another type of percents im havin trouble with, i know im close to figuring it out but cant quite get there... "there were 130 people in a school auditorium to listen to a political candidate. This reprsents 33 1/3% of the capacity of the auditorium. How

    asked by Jason
  208. math

    another type of percents im havin trouble with, i know im close to figuring it out but cant quite get there... "there were 130 people in a school auditorium to listen to a political candidate. This reprsents 33 1/3% of the capacity of the auditorium. How

    asked by Jason
  209. Algebra

    Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Explain

    asked by Nini
  210. algebra

    the costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company's fixed costs allotted to this

    asked by plz help
  211. physics

    A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical

    asked by Adam
  212. Algebra 2

    A retail lumberyard plans to store lumber in a rectangular region adjoining the sales office. The region will be fenced on three sides and the fourth side will be bounded by the wall of the office. Find the dimensions of the region if 350 feet of fencing

    asked by Carolyn
  213. math

    Mrs. Cindy needs to order new balls for the school students to use at recess. She asks the students what balls she should order. One-third of the students want Mrs. Cindy to order soccer balls. One-third of the students want Mrs. Cindy to order

    asked by gary
  214. math

    whats is the radius of 7.5 by the square root of 11 plus or minus 3 ?

    asked by lizette
  215. chemistry

    What is the molarity of the solution produced when 14.1 grams of ammonia is dissolved in sufficient water to prepare .100 liters of solution?

    asked by Drew
  216. chemistry

    Zinc reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2 If 3.63 grams of zinc react, how many grams of zinc chloride is produced?

    asked by beryl
  217. Trig

    what are the rectangular coordinates of (-2(pi/6))? please help.

    asked by BreAnne
  218. trig

    Find all solutions of cos 2x + √2/2 =0. a) + or - 3/8pi +Kpi b) 2/3pi + Kpi, 5/3pi + Kpi c) + or - 2/5 +Kpi d) 2/3 pi + 2Kpi, 5/3pi + 2Kpi I really need help on this question :(

    asked by Anonymous
  219. algebra

    If events A and B are independent, P(A) = 0.62, and P(B | A) = 0.93, what is P(B)?

    asked by jenny
  220. Calculus

    A tank contains 2920 L of pure water. A solution that contains 001 kg of sugar per liter enters a tank at the rate 4 L/min The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (b) Find the amount of

    asked by Javier
  221. physics!

    while running a marathon, alex is producing about 900 calories per hour. 1 calorie is 4184 j. if the specific heat of the human body is 3500 j/kg x c, how many degrees celsius would alexs temperature increase if he did not sweat and ran the marathon in 3 h

    asked by alex
  222. math

    A rectangular prism has a volume of 1800 cubic inches.Its length is 15 in and its width is 10 in. Find the prism's height?

    asked by Anonymous
  223. Algebra 2

    A company can produce T-shirts for $0.99 each. They spent $1,000,000 on their building and machines. What is the horizontal asymptotes of the graph that models the average cost of each t shirt, including the start up cost?

    asked by chels