Questions Asked on
August 9, 2011

  1. Physics

    An automobile moving at a constant velocity of 15m/s passes a gasoline station. Two seconds later, another automobile leaves the gasoline station and accelerates at a constant rate of 2m/s^2 in the same direction. How soon does the second autombile

  2. trig

    Find sin(2theta) if tan of theta = 7/24, pi < theta < 3pi/2 ?

  3. Calculus

    A construction company wants to build a rectangular enclosure with an area of 1000 square feet by fencing in three sides and using its office building as the fourth side. Your objective as supervising engineer is to design the enclosure so that it uses the

  4. PHYSICS

    A piece of wood is floating at the surface of some water as illustrated (the diagram is not to scale). The wood has a circular cross section and a height h = 4.0 cm. The density of water is 1.00 g/cm3. The distance y from the surface of the water to the

  5. math

    Find the GCD OF 121, 151 And 211

  6. geometry

    Use formulas to find the lateral area and surface area of the given prism. The base of the prism is the rectangle with sides of length 13m and 5m. Show your answer to the nearest whole number.

  7. Math

    A pizza is cut into 12 pieces. Describe the steps you would take to find the area of one slice of the pizza.....Help?!

  8. statistics

    the mean marks obtained by a group of 100 students was found to 49.46.THE mean marks obtained in the same examination by another group of 200 students was 52.32. Find the mean marks obtained by the both groups of students tken together.

  9. Precalculus

    A doughnut shop at a shopping mall sells a dozen doughnuts for $2.95. Beyond the fixed costs of $150 per day, it costs $1.45 for enough materials and labor to produce each dozen doughnuts. If the daily profit varies between $50 and $200, between what

  10. Precalculus

    A discus is thrown from a height of 3 feet with an initial velocity of 55 ft/s at an angle of 44° with the horizontal. How long will it take for the discus to reach the ground? I started off with 55cos(44)=40 then I made an equation 40t-16(t)=2.5 seconds?

  11. PHYSICS _ please help

    A metal block of volume 1 * 10^3 cm^3 is suspended from a thread as shown in the diagram. It is lowered into a beaker of liquid of unknown density until it is completely immersed but does not touch the bottom of the beaker. The beaker rests on a balance.

  12. English

    Here is my essay. Can you please check? I awake very groggy, to find myself on this very remote island with not a person in sight. Attached to my shirt is a letter written by my English teacher Ms. Barlett stating that I am heading down the wrong path to a

  13. math

    tan(3arc cos3/4)? =3cos3/4 =cos=4 sqrt17/4 = tan

  14. marketing

    13) The main difference between a marketing strategy and a marketing plan is that: A. Time-related details are included in a marketing plan. B. A marketing strategy omits pricing plans. C. A marketing strategy provides more detail. D. A marketing plan

  15. Physics

    Hi, I have this question, except I don't know to solve. I think it has something to do with exponential decay and heat flow, but I would like some more help. "3 kg of ice and a 12-pack of ice-cold soda are placed in a 25" x 25" x 40" (outside dimensions)

  16. social studies

    what are 2 physical and human features of tokyo?

  17. algebra

    how do you do a 3 by 3 magic sqaure with the number 1-9 only being used once

  18. math

    Round this number to the nearest million. 43,700,00?

  19. Middle School

    I need help diagraming this sentence. The old grey horse ran into the fence.

  20. math

    round 189,499,000 to the nearest millon

  21. Math

    Harry has test grades of 85, 87, and 77 on his first three algebra tests. What must he get on his fourth test to earn an average of at least 84?

  22. math college

    Find the perimeter and area of a right triangle if the shortest side is 16 in. and the longest side is 34 in. Include correct units with each part of your solution.

  23. physics

    A car is heading towards a brick wall at 80 km/hr, he starts breaking 30 feet away. What acceleration is required to avoid a collision?

  24. History

    Can some one help me with these questions? Because Japan was hit by the worldwide economic depression in the 1930s, military leaders were able to gain power. Question 1 answers True False Question 2 text Question 2 After Japan withdrew from the League of

  25. english

    explain one reason that teaching fables to children is positive

  26. Math

    Determine the values of x for which x-5/3x+6 is undefined

  27. math

    is x^5+x^2+x a polynomial ? explain why or why not

  28. english

    Crossword puzzle Substitute lively__________ for boring, "tired" words. Has 7 letters

  29. english

    Crossword puzzle Try to have_________ in length and form of your sentences. 7 letters

  30. math

    What six numbers can you use that will give you a variance of 4 and a standard deviation of 2?

  31. music PLZ HELP CHECK MY ANSWERS

    5. _______ is a singing technique that’s part speech and part song. A. Sprechstimme C. Klangfarben B. Walkurie D. Erlkö!@#$%^& 6. Music that doesn’t center on a particular key is referred to as A. intoned. C. nontonal. B. untoned. D. atonal. 7.

  32. Science

    Covert the following to the prefix commonly used (include unit). For example 36 kF or 8.9 MJ, 1) 0.0068 s 2) 0.00000000234m

  33. CALCULUS:)

    Please help me... and show steps please :) integral from 0 to 1 of (e^x+1)/(e^x +x) dx

  34. Science

    Express the following in scientific notation 1) 547 000.0 2) 0.000000049704

  35. Science

    Hi, I am needing help with the following question. How long would it take to produce 150 kW with 780 J of energy? (make sure you have the corerct units)

  36. Science

    Could I please have help with the following: 1)Remove the dimensional prefix and express in scientific notation (include unit) a)1500 mA b) 5.36 x10^6 kV

  37. Science

    Calculate the following numbers into scientific notation (include units)' 1) 7800 nm + 95 pm = (would it be 7.8x10^7pm) ? 2) (65x10 4m) x (4.5x10-6s-1) = (the 4 is meant to be a little 4 and the -6 and -1 are meant to be small)

  38. Math

    Solve for x: x2 + 4x + 2 = 0

  39. physics

    Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial velocity of 80 m/s (to the right) along a line joining the two balls and the 86 kg ball is at rest. The 86 kg ball has in initial velocity of −24 m/s. The two balls make a head-on

  40. COM155

    Write two paragraphs about how interest rates affect our purchasing decisions. High interest rates make us stop and think, do we need this item? Is it a necessity? When interest rates are high people tend to finance things less. Why pay a lot in interest

  41. math

    a person who is 1.9m tall has a shadow that is 1.5m long. at the same time a flagpole has a shadow that is 8m long. determine the height of the flagpole to the nearest tenth of a metre. draw a diagram

  42. Math

    Solve for x: 6/x + 8/9 = 10/3x

  43. In-class presentation URGENT history

    Hi Look, I'm stuck. I've been trying to get an idea all week. The last thing that I want to do is use a powerpoint as my visual aid. In fact i've removed it from even being considered. At one point I thought about doing a video confrence or asking

  44. Physics

    A 40 g marble moving at 2.3 m/s strikes a 29 g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. What is the speed of the first marble immediately after the collision? What is the speed of the second marble

  45. world history

    The earliest agriculturists to migrate into Europe probably came from A. Asia. B. Africa. C. Europe. D. the Americas.

  46. PHYSICS

    A 50cm long hollow glass cylinder is open at both ends and is suspended in air. A source o sound that produces a pure frequency is placed close to one end of the tube. The frequency of the sound is slowly increased from a very low value. The tube is first

  47. Writeteacher

    Hi Writeteacher, would you mind looking at my question below? Thanks Em ps> thanks for all your help so far

  48. Modern

    Im not sure whats happened to my question...my friend em is also confused...Anyway here's the question that i posted before: I need some help coming up with a creative and inovative approach to my modern multi-modal on the invasions of Hungary in 1956, and

  49. physics

    A 5.88 g bullet is fired vertically into a 0.9 kg block of wood. The bullet gets stuck in the block, and the impact lifts the block 0.87 m up. (That is, the block — with the bullet stuck in it — rises 0.87 m up above its initial position, and then

  50. geometry

    Let C be the portion of the curve y =8ãx between (1,8) and (25, 40). FindçC 2yds.

  51. vector calculus

    Let C be the portion of the curve y =8ãx between (1,8) and (25, 40). FindçC 2yds.

  52. Precalculus

    Okay I am soo confused with these two questions: The resultant of two forces acting on a body has a magnitude of 80 pounds. The angles between the resultant and the forces are 20° and 52°. Find the magnitude of the larger force. Without the wind, a plane

  53. niit, Dit course

    use if else n check dat it is leap year or not in pseudocode

  54. Physics

    In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 43.8 m/s, to his enemy's car, which is going 55.8 m/s. The enemy's car is 15.2 m in front of the Indy's when he lets go of the grenade. A) If Indy throws the

  55. college algebra

    1/4t + 3/5= 2/5 - t

  56. history

    the ancient Greeks shared ________language, culture and religion.

  57. calculus

    Let C be the portion of the curve y =8(x^(1/2)0 between (1,8) and (25, 40). FindçC 2yds.

  58. Math

    Find the difference of all the prime numbers between10 and25 arranged in descending and ascending order.Give your answer in words.

  59. College Physics

    Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial velocity of 80 m/s (to the right) along a line joining the two balls and the 86 kg ball is at rest. The 86 kg ball has initial velocity of −24 m/s. The two balls make a head-on elastic

  60. statistics

    Find the probability that in a group of 500 people 69 or more would have green eyes.

  61. math

    the volume of a cylinder is 80pi cubic inches; if the radius is 4 in. find the height

  62. chemistry

    what is the molar mass of the unknown gas that diffuses 0.250 times as fast as hydrogen gas under the same circumstances?

  63. science

    What are the importance of coral reefs?

  64. math

    In 1968, the estimated population of the world was 3,559,028,982 people. When this number is written in expanded form using exponents, one power of 10 would not be represented. Which power of 10? Why?

  65. Physics _ Please please help

    A hollow brass cylinder is weighed on a pan balance (kitchen scale) which read in kg. The scale reading is 5.56 kg. The brass cylinder is now removed from the scale and is replaced by a beaker of liquid density 1.56 * 10^3 kg/m^3; the scale now reads 17.50

  66. Comp 155 Week 6

    Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine whether a word is an

  67. algebra

    1-sinx

  68. maths

    Find the equation of the curve through (4,2) whose tangent (for x > 0) forms an angle with the x-axis, the tangent of which is equal to 1 . Sketch the curve for x x > 0. √

  69. Math

    If the angle is between 0 degrees and 90 degrees what is cos of tan 7/8? =.753

  70. Math

    Please help me.. There is question : calculate the number of hours of learning sessions in a week, and then specify the amount of hours of mathematics lessons out of the entire hours of learning sessions in a week expressed in a fraction! I Don't know..

  71. maths

    abcd is a special quardilateral are in the ratio 1:2:3:4 measur of the four angles =

  72. Physics

    Two balls have masses 44 kg and 86 kg. The 44 kg ball has an initial velocity of 80 m/s (to the right) along a line joining the two balls and the 86 kg ball is at rest. The 86 kg ball has initial velocity of −24 m/s. The two balls make a head-on elastic

  73. calculus

    Find dy/dx and d^2y/dx^2 and then determine for which t values the curve is concave up: x=t^3 - 18t y=t^2 - 1

  74. In-class presentation (history)

    Hi Look, I'm stuck. I've been trying to get an idea all week. The last thing that I want to do is use a powerpoint as my visual aid. In fact i've removed it from even being considered. At one point I thought about doing a video confrence or asking

  75. Calculus

    A manufacturer constructs open boxes from sheets of cardboard that are 6 inches square by cutting small squares from the corners and folding up the sides. The Research and Development Department asks you to determine the size of the square that produces a

  76. physics

    A distance runner moves at a constant pace of 4.1m/s. how far (in m) does he move in 30 minutes?

  77. physics

    A steel ball is brought in contact with an identical ball of wood, so when will they be equally hot or cold? why?

  78. Psychology

    One of the arguments against inherited racial differences in intelligence is based on data that shows

  79. algebra

    Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the

  80. math 208

    5 times x over y...when x=8 and y=2

  81. physics

    You decide to experiment to measure the speed of sound. You have a friend drop a softball at the same time he hits an air horn. If you are 150 m away from your friend and you measure 0.45 seconds between the time you see the ball drop and you hear the

  82. Calculus

    If you had a computer that could track the number of cereal boxes on the shelf of a market continuously over a 1-week period would you expect the graph of the number of boxes on the shelf versus time to be a continuous (unbroken) curve? Explain your

  83. informal logic

    Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because

  84. Calculus

    A manufacturer constructs open boxes from sheets of cardboard that are 6 inches square by cutting small squares from the corners and folding up the sides. The Research and Development Department asks you to determine the size of the square that produces a

  85. Inequalities

    A doughnut shop at a shopping mall sells a dozen doughnuts for $2.95. Beyond the fixed costs of $150 per day, it costs $1.45 for enough materials and labor to produce each dozen doughnuts. If the daily profit varies between $50 and $200, between what

  86. Math

    m is inversely proportional to n^2, where m and n are positive numbers. If m is increased by 1500% , find the percentage change in n. THANKS.

  87. physics

    6. A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m?

  88. Science

    What hapens you moving from left to right in a periodic table?

  89. science/physics

    I was in a crosswalk, struck by a truck weighing 3,400 lbs. (traveling at about 8 K/hr) - what was the force per square inch exerted on me?

  90. Precalculus

    Okay I posted this before but I am still not sure. How would you solve for M? The resultant of two forces acting on a body has a magnitude of 80 pounds. The angles between the resultant and the forces are 20° and 52°. Find the magnitude of the larger

  91. math

    How would i compare the area of two rectangular regions if the length of one rectangular region is double of the other and the width is triple of the other (using an algebraic formula)

  92. physics

    A pendulum of length L = 20.8cm and mass m = 168 g is released from rest when the cord makes an angle of 65.2 with the vertical. (a) How far (m) does the mass fall before reaching its lowest point? (b) How much work (J) is done by gravity as it falls to

  93. geometry

    the base of a triangular sail is x feet and its height is 1/2x+7 feet.which expression represents the sails area?

  94. Algebra

    Can you tell me if these are correct? I am not sure that I understand this. 1. Which is the solution for the determinant? |10 0)| 5 -7 Answer- -70? 2.Which is the solution for the determinant? |1 7)| 0 -3 Answer- -3

  95. Spanish

    Yo te puedo pagar manana. (accent on n) Would the response be a. Bueno, pagate manana. (accent on a and n) b. No, pagame ahora mismo. (accent on a) And can you explain why? Gracias

  96. physics

    A pendulum of length L = 48.5 cm and mass m = 169 g is released from rest when the cord makes an angle of 65.4 with the vertical. What is the speed (m/s) of the mass upon reaching its lowest point?

  97. Math

    How would you solve a reduction identity. For example cot(x-90)? What are the steps to solving them besides graphing?

  98. Math

    You are making ballon bunches to attach to tables for a charity event. You plan on using 8 ballons in each bunch. Write a rule for the total number of balloons used as a function of the number of bunches created. Identify the independent and dependent

  99. math

    how do I solve this following problem step by step. 8/x = 10

  100. math

    a/b = c/d

  101. Math: Inequalities

    A doughnut shop at a shopping mall sells a dozen doughnuts for $2.95. Beyond the fixed costs of $150 per day, it costs $1.45 for enough materials and labor to produce each dozen doughnuts. If the daily profit varies between $50 and $200, between what

  102. math

    how do i sovle this equation. x/5 = 12/15

  103. Life orientation

    Explanation of the consequences of alcoholism