1. 5th grade social studies

    Question: What time period or movement began in the textile industry? I am really confused about this questions. My answer was the time period of the 18th century. Is this correct? Question: What is an economic system based on machinery rather than animal

    asked by Lina on October 26, 2010
  2. trigonometry

    From lookout tower 80ft. high, a man observes from a position 6.5 ft. below the top of the tower that the angle of elevation of the top of the certain tree is 12deg40mins and the angle of depression of its base is 70deg20mins. If the base oof the tower and

    asked by Winsel on August 14, 2010
  3. Math

    A tree and a flag pole are on the same horizontal ground, A bird on top of the tree observes the top and bottom of this flag pole below it at angle 45 degrees and 60 degrees respectively, If the tree is 10.65 meters high ,calculate and correct to 3

    asked by Edwin on April 30, 2016
  4. Math

    Hi Drawing a diagram will help: A ladder 5m long leans against a wall, with the top of the ladder (B) reaching 4m up the wall and the foot of the ladder (A) is 3m from the wall (C). A man is at a point D which is 2m up the ladder.Point E lies on line AC

    asked by Mintz on July 8, 2010
  5. Math

    Karen wants to collect data about the hobbies of her friends. The table shows a list of some questions she might ask. Is each question a statistical question that Karen can ask to collect data? Select Yes or No for each question. Question Yes No How much

    asked by Simone on March 20, 2017
  6. psychology (Ms.Sue)

    Thank you Ms.Sue for answering my last question. I have one another question that I has hard time understanding.... "the circumstances that may contributto the development of this condition." I have no idea what she is asking. This is the question,

    asked by Delhi on April 28, 2012
  7. English-Ms. Sue

    This is the last question on the essay. The author of this essay is Shirley Whittington Last question: Some people consider puns to be the lowest form of humour. What points does Whittington advance to suggest the respectabililty of puns? Do you agree with

    asked by Sara on February 2, 2010
  8. psychology

    What is the realm of mind and consciousness? Could some one explain to me what Realm means in this question I do not want the answer to the question just what realm means I have look at the dictionary and still have no glue what the instructor is wanting

    asked by tom on July 17, 2008
  9. MaTH Question

    Write an equation for the problem & solve. There are 500 cm of trim to frame a banner. The banner is 22cm wide. How long can it be? Thanks you so much 500 x 22 = 11000 ( this gives you area) Then multiply 11000 by 2 because there are 2 sides of length.

    asked by Aubrey on November 24, 2006
  10. physics

    A 301 kilogram piano is being lifted at a steady speed from ground level straight upward to an apartment 10.0 meters above the ground. The crane that is doing the lifting produces a steady power of 415 watts. How long does it take to lift the piano? I

    asked by Lupita on November 8, 2013
  11. calculus 1

    A rock is dropped off the edge of a cliff its distance S (in feet) from the top of the cliff after T seconds is S(T) = 16t^2. Assumme the distance from the top of the water below is 96ft. When will the rock strike the water? T=16t^2 -96 96=16t^2 80=t^2 4

    asked by sky on January 28, 2015
  12. Calculus - MathMate Please help

    I asked this question on last thursday and u told me that the bottom limit for the 1st and the right limit for the 2nd area is missing? The question that i posted had no other information and i don't know why you said that the limits are missing. There is

    asked by K on November 29, 2010
  13. Trigonometry

    A communications tower is located at the top of a steep hill, as shown. The angle of inclination of the hill is 58°. A guy wire is to be attached to the top of the tower and to the ground, 50 m downhill from the base of the tower. The angle α in the

    asked by Liz on October 2, 2014
  14. Ochem

    What is the purpose of refluxing? Which reaction conditions are indicated with reflux? Will you apply heat? How do you know the temperature at which you should reflux? I think it is "A reflux system is used to condense vapours escaping from the hot flask.

    asked by Jay on July 6, 2006
  15. maths

    At the local fire station they have different lengths of fire hose. the shortest is half the length of the middle-sized one, and one fifth of the length of the longest one. if i connect the three different hose lengths together i make a hose 120m long. how

    asked by montana on August 4, 2010
  16. physics 12- dynamics

    A 5kg block slides down an incline of 25

    asked by sk on March 24, 2010
  17. chem

    what is the electron configuration for Au+ ? where does f block fit in?

    asked by natash on November 2, 2008
  18. science/chem

    Why do the d and f block elements have only 2 valence electrons?

    asked by missy on February 22, 2011
  19. science

    WHICH BLOCK WILL HAVE THE GREATEST CHANGE IN MOTION

    asked by MARRY on February 17, 2014
  20. physics

    Find the acceleration of the block of mass M = 4.79 kg (m = 4.03) (KE = 0.1)

    asked by John on February 24, 2012
  21. science

    how far will 350 j raise a block weighing 7 N

    asked by Myriel on November 17, 2010
  22. physics

    how far will 490 J raise a block weighing 7 N?

    asked by Melany on December 13, 2011
  23. science

    What kind of materials block sound.

    asked by Laura on February 6, 2009
  24. science 8th grade

    what will happen if a metal block that is 60°c is placed in water that is 20°c?

    asked by Antoinette-Hope on April 24, 2011
  25. Physics

    The volume of a block of lead that has a mass of 33.6g would have to be?

    asked by M on February 10, 2015
  26. physics/measurements

    how do you compute the uncertainty in the volume of a block?

    asked by Anna on February 15, 2009
  27. calculus

    I've posted this question before and think I've made some progress but it some part of the second answer I got is wrong I've done the first question but I cannot get any farther. I'm so stuck. Please explain or just help me to figure out the next steps. A

    asked by casidhe on April 21, 2012
  28. Discrete Math

    A professor gave his 40 students a test with three questions. Every student answered at least one question. Ten didn't answer the first question. 14 didn't answer the second question. 12 didn't answer the third question. If 18 students answered all three

    asked by Ajun on September 26, 2017
  29. Physics Help!!!

    One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string?

    asked by Kelly on April 3, 2012
  30. Physics Help!!!

    One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string?

    asked by Kelly on April 3, 2012
  31. math

    A professor gave his 40 students a test with three questions. Every student answered at least one question. Ten student did not answer the first question, 14 did not answer the second question, and 12 did not answer the third question. If 18 students

    asked by Excel on April 13, 2015
  32. Math

    the international links long-distance phone company charges no monthly fee but charges 18 cents per minute for long-distance calls. the world connections long distance company charges $50 per month plus 10 cents per minute for long-distance calls. compare

    asked by Larissa on March 2, 2013
  33. PHYSICS

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity.

    asked by Mae on August 23, 2014
  34. Physics

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?

    asked by YESHA on August 23, 2014
  35. Physics

    A 20 kg wagon is pulled along the level ground by a rope inclined at 30 deg above horizontal. A frictional force of 30 N opposes the motion, how large is the pulling force if the wagon is moving at constant velocity?

    asked by JOSH on August 22, 2014
  36. physics

    A box of mass 5 kg is pulled along a horizontal frictionless surface by a force of 40N inclined @ 30dgrees. Calculate A)the work done by the force over a distance. B)the speed gained by the box after travelling 10m.

    asked by Luc on August 3, 2011
  37. Physics

    a 215-N box is placed on an inclined plane that makes a 35.0 degree angle with the horizontel. Find the component of the weight force parallel to the plane's surface. can someone explain how to find the answer to this problem?

    asked by Kindell on January 13, 2009
  38. Physics

    A skier leaves the ramp of a ski jump with a velocity of 14 m/s 15.00 above the horizontal. She lands on a slope below inclined at 500. Neglect air resistance and find the distance from the ramp to where the jumper lands.

    asked by Michael on January 30, 2018
  39. Maths

    The diagram shows a cylinder of 8kg lying at rest on two smooth planes inclined at angles of 40 degrees and 50 degrees to the horizontal. Calculate the reaction exerted by each plane on the cylinder. Thanks in advance

    asked by John B on December 1, 2016
  40. Mechanics for A-level?

    A particle of mass m can just rest on a rough plane inclined at 30 degree to the horizontal without slipping down. show that the least horizontal force needed to maintain its position if the inclination is increased to 45 degree is 0.268mg.

    asked by Jat on April 7, 2012
  41. Physics

    At each corner of a square of side script i there are point charges of magnitude Q, nQ, mQ, and 4Q, where n = 3 and m = 3. Determine the force on the charge mQ due to the other three charges. (mQ is on the bottom right corner, nQ is on the top right

    asked by Anonymous on December 10, 2009
  42. 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)

    asked by Ashley on August 9, 2011
  43. English

    When making multiple choice quiz for students about speaking. Do I need to use question marks in the answer choices. Example- Hello how are you. a)fine thank you and you b)good wasup c)I'm ok Answer (a) is the answer to the question but in itself is a

    asked by Ajarn on August 17, 2012
  44. Physics

    A 80 kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 25 degree hill. The skier is pulled a distance x = 230m along the incline and it takes 2.3 min to reach the top of the hill. If the coefficient

    asked by Kensey on June 18, 2012
  45. math .please help its worth alot of my grade :s

    The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;

    asked by amy on February 16, 2012
  46. Grade 7 math

    The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;

    asked by Anonymous on February 14, 2012
  47. 7 grade math

    The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;

    asked by Amy on February 14, 2012
  48. College Algebra

    Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t represents the time (in

    asked by Jack on July 10, 2013
  49. math

    The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;

    asked by Anonymous on February 14, 2012
  50. business

    Wellington’s Funds Flow Statement (Statement of Cash Flows) Sources Earnings after taxes $ 80 Depreciation 84 Decrease in accounts receivable 42 Increase in accounts payable 13 Increase in notes payable 196 Increase in accruals 22 Increase in long-term

    asked by v on September 28, 2014
  51. Math

    A certain mass is supported by a spring so that it is at rest 0.5 m above a table top. The lowest position of the mass is 0.1 m, and the highest position is 0.9 m. The mass is pulled down 0.4 m at time =0, creating a periodic up and down motion. It takes

    asked by hhfo on July 27, 2011
  52. 8th grade physical science

    You are on roller blades on top of a small hill. Your PE is 1,000.0 Joules. The last time you check your mass was 60.0 kg. What is the height of the hill? if you start skating down this hill, your poetntial energy will be converted to kinetic. At the

    asked by Misty on January 19, 2012
  53. physics

    a 75.0 kilogram skier is at the top of a hill that is thirty degrees above the horizontal. the skier starts form and then travels down the hill which is 100 meters long. the skier at the bottom of the hill instantaneously then travels on flat horizontal

    asked by marie on November 15, 2010
  54. Earth Science

    Which of the following organisms is most likely to survive? A. the top carnivore in a food chain B. a herbivore in a food chain C. the top carnivore in a food web

    asked by Emi on March 2, 2015
  55. math

    From the top of a fence, the angle of depression to a flower on the ground is 72°. The top of the fence is 8 feet above the ground. How far is the flower from the bottom of the fence?

    asked by kenny on June 20, 2011
  56. math

    1st wall 5'long 8' wide 2nd wall 9'long 8'wide 3rd wall 2' long 4' wide tile size is 2'long 4'wide how many tile do I need

    asked by Mike on January 21, 2016
  57. geometry

    A ladder is propped against a wall. If the top of the ladder reaches 18 feet up the wall and the base of the ladder is 6 feet from the base of the wall, how long is the ladder?

    asked by carolyn on January 26, 2011
  58. business math

    How long will it take the farmer to sell all his chickens? Farmer has 2100 chickens. He sells 10 chickens at the end of the first week, 20 chickens at the end of the second week, 30 chickens at the end of the third week and so on. Question: How long will

    asked by Shadow of me on June 30, 2011
  59. Physics

    Calculate the Patm And the pressure exerted by water on the block - The area Of the upper face of block is 40 cm2 Calculate the total pressure exerted on the solid Given : In the first tube : in a tube a solid .. the height from solid to the water level in

    asked by Nana on April 23, 2010
  60. math

    what is the difference btwn 5^3 and (5)^3? When ever they have a question in which they have a a number squared and then they have another question right after it asking the difference between the same question in parenthesis..is it a trick question? is

    asked by Samantha on November 24, 2012
  61. Preschool/child dictation

    Can you help me with this? Jason was dictating a story about his pet hamster to his teacher. He said,"He climb to the top of his cage and jump down. He be fast." The teacher should: A. write,"He climb to the top of his cage and jump down. He be fast." B.

    asked by Anonymous on September 13, 2007
  62. physics

    A ski jumper launches from a ski jump that is oriented parallel to a hill. The jump has a vertical drop of 50 m and the coefficient of friction μ between the skier and the jump is 0.05. The launch point is 5 m above the hill and there is a small lip at

    asked by Anonymous on August 16, 2013
  63. Physics

    A dram of mass 100kg is rolled into the deck of long 1.5m above a horizontally floor using a plank 4m long.calculate the work done against gravity during the process [Take g=10ms'2]

    asked by Yegh margaret on January 29, 2017
  64. scale math

    An architect uses a scale of 1/4 inch to represent 1 foot on a blueprint. If the West wall of a building is 44 feet long, how long will the line be on the blue print?

    asked by FrancesR. on April 22, 2015
  65. Scientific studies

    A toy air rocket is launched vertically with an initial velocity of 22m/s. (a) How long does it take to reach its maximum height (v=0m/s? (b) How long does it take to return to the ground (x-0m)?

    asked by Aly on February 17, 2010
  66. physics

    A hot air balloon is traveling vertically upward at a constant speed of 5.3 m/s. When it is 25 m above the ground, a package is released from the balloon. After it is released, for how long is the package in the air? The acceleration of gravity is 9.8

    asked by maura on September 9, 2012
  67. math

    The trunk of a leaning tree makes an angle of 12 degrees with the vertical. To prevent the tree from falling over, a 35.0 m rope is attached to the top of the tree and is pegged into level ground some distance away. if the tree is 20.0 m from its base to

    asked by Yiu on April 28, 2015
  68. Trigonometry

    Find the value of x on this right triangle when a=20 b=5x-10 and c=2x(Square root of 5) A. x = 15 B. x = 10 C. x = 12 D. x = 16 A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the

    asked by Anonymous on July 18, 2012
  69. Math - Trigonometry

    Find the value of x on this right triangle when a=20 b=5x-10 and c=2x(Square root of 5) A. x = 15 B. x = 10 C. x = 12 D. x = 16 A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the

    asked by Anonymous on July 17, 2012
  70. chemistry

    I'm having trouble naming this organic chemistry compound. (I'm not sure how to include a picture in this, so I'll try my best to explain it in words and attempt to type it out) The full formula is C9H16. It's an alkyne and the longest carbon chain is 5

    asked by Kate on April 9, 2014
  71. Math - Trigonometry

    Find the value of x on this right triangle when a=20 b=5x-10 and c=2x(Square root of 5) A. x = 15 B. x = 10 C. x = 12 D. x = 16 A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the incline is the top of the wheel after the

    asked by Anonymous on July 18, 2012
  72. physics

    A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 35 degrees above the horizontal. The top of the fence is 4 m

    asked by jes on October 20, 2011
  73. chemistry

    a block of aluminum is placed in 10.0g of water. the initial temperature of the water is 22.0 degrees celcious and its final temperature is 27.0 degrees celcious. what is the amount of heat released by the block of aluminum in calories if it had an initial

    asked by rachel on May 1, 2013
  74. Physics

    A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block.

    asked by Anonymous on March 15, 2017
  75. AP Physics

    A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block.

    asked by Anonymous on March 15, 2017
  76. ap physics

    A force of 75 N is applied to two boxes stacked on top of each other. The coefficient of kinetic friction between the bottom box and the floor is 0.3. If the box on top is to accelerate at the same rate as the box on the bottom, what must the minimum

    asked by tyger2020 on September 18, 2018
  77. Statistics

    I have a chart that has 4 columns across the top and 33 going down. The colunms on the top read: predicted number, selected number, (col 1 - col2)^2, and the mean of x. Their are 32 predicted numbers and 33 selected numbers. I need to fill in the column

    asked by Hannah on June 30, 2011
  78. Statistics

    I have a chart that has 4 columns across the top and 33 going down. The colunms on the top read: predicted number, selected number, (col 1 - col2)^2, and the mean of x. Their are 32 predicted numbers and 33 selected numbers. I need to fill in the column

    asked by Hannah on June 30, 2011
  79. Statistics(Urgent!Please help)

    I have a chart that has 4 columns across the top and 33 going down. The colunms on the top read: predicted number, selected number, (col 1 - col2)^2, and the mean of x. Their are 32 predicted numbers and 33 selected numbers. I need to fill in the column

    asked by Hannah on July 1, 2011
  80. PHYSICS

    vector B is 3.46 units long toward the east. Vector A is 4.00 units long 30 degrees N of E. How long and in what direction is C = A - B?

    asked by Angela on September 24, 2010
  81. physics

    Vector B is 3.46 units long toward the east. Vector A is 4.00 units long 30 degrees N of E. How long and in what direction is C = A - B?

    asked by laura on September 25, 2010
  82. Math

    One piece of ribbon is 1 26/27 yards long, another is 8 5/7 yards long and the third is 12 5/9 yards long. What is the total number of yards?

    asked by zyria on December 10, 2008
  83. Children with Special Needs

    Hello! So I have a question regarding a topic to do on Children with special needs, so I have researched and chose children with special needs. Now I want your help in choosing a research question for example “Is childhood anxiety a result of one’s

    asked by Hello! on November 9, 2015
  84. geometry

    a playground is 50yd by 50 yd amy walked across the playground from one corner to the opposite corner. how far did she walk? i got : 5000yd #2 a 70 ft ladder is mounted 10 ft above the ground on a fire truck. the bottom of the ladder is 40 ft from the wall

    asked by marko on May 3, 2012
  85. Posting

    I keep trying to post a question about chemistry and the site keeps telling me that there is an error because I am trying to put in a link to a website. This is not true! I tried to contact the website, and put in my question there. Can someone from this

    asked by Sadie on February 15, 2009
  86. Chem help!

    I need help for this question in combining gas law P1V1/T1=P2V2/T2. P1V1/T1=P2V2/T2 P1 is 1.5 atm V1 is a question mark. T1 is -20 °C K P2 is 2.6 atm V2 is 750 mL with a blank box underneath it. T2 is -5 °C K. How can I combine this question?

    asked by Lizy on May 2, 2008
  87. To MathMate

    Yep you are right, we are helping each other out... actually we have the problems in a multiple choice format, but we cant get the answers, if u may help us... here is the list of problems with the choices,... tnx Question2 In (dy/dx) + yP(x) = y^n Q(x),

    asked by Amber on December 14, 2009
  88. Physics help please

    If a 2000kg coaster is moving at 10 m/s on the top of the loop, what is the magnitude of the normal force that the track applies to the coaster? Normal force = mg cos theta But if theta is 90 degrees, in this case (I'm assuming, because the coaster is

    asked by tyger2020 on January 15, 2018
  89. Physics

    a periscope is an optical instrument made of two plane mirrors inclined at an angle 45 with respect to the axis of the tube. an observer places her eye at point O. draw the path of a ray light issued from A. determine the position and the nature of the

    asked by Sarah on February 11, 2017
  90. FEEDBACK CONTROL SYSTEM

    Figure below shows the block diagram of a dc-motor control system (note the dc-motor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is

    asked by FeedbackHELP!! on October 10, 2013
  91. FEEDBACK CONTROL SYSTEM

    Figure below shows the block diagram of a dc-motor control system (note the dc-motor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is

    asked by FeedbackHELP!! on October 9, 2013
  92. Chemistry

    What order do i arrange the units so they can be from largest to smallest? m superscript 3, mL, cL, UL, L, dL. kilo hecto deca unit deci centi milli ----------- All of the above are by a factor of 10 from top to bottom (becoming smaller); 1 kilogram = 1000

    asked by Bryan on January 21, 2007
  93. Math

    Two phone companies offer discount rates to students. The first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls. Write a linear equation

    asked by Julie on September 20, 2014
  94. Math Help!!

    Two phone companies offer discount rates to students. The first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls. Write a linear equation

    asked by Julie on September 21, 2014
  95. Physics

    Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.6 x 10-2 m and a thickness of about 1.4 x 10-3 m. The shear modulus of cartilage is 1.2 x 107 N/m2. Suppose a shearing

    asked by Mike on November 22, 2010
  96. physics

    Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.85 10-2 m and a thickness of about 7.14 10-3 m. The shear modulus of cartilage is 1.16 107 N/m2. Suppose that a shearing

    asked by Cat on October 18, 2012
  97. Math

    Suppose we are standing on top of a 300-ft tower and we are holding a shiny new penny.We do not hurt it down, for that would be dangerous and wrong! We toss it up at a velocity of 10 feet per second and then when it comes down it just happens to plummet to

    asked by George Carl on February 26, 2018
  98. physics

    A superhero is running toward a skyscraper to stop a villain from getting away. As he is moving, he looks up at the top of the building and his line of sight makes a 33.0° angle with the ground. After having moved 300 m, he looks at the top of the

    asked by jaime on August 9, 2014
  99. Math

    to measure the height of the Eiffel Tower in Paris, a person stands away from the base and measures the angle of elevation to the top of the tower to be 60 degrees. Moving 210 feet closer, the angle of elevation to the top of the tower is 70 degrees. How

    asked by Donielle on February 15, 2012
  100. Algebra

    Fomula: A=1/2(b1+b2)h A=area of a trapezoid b1=width at the top b2-width at the bottom h=height A 7-foor tall trapezoid has 42 square feet of area. If is is 9 feet wide at the bottom, how far across is it at the top?

    asked by G on February 15, 2008