1. Calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5]

    asked by Nick on January 31, 2018
  2. calculus

    If a rock is thrown upward on the planet Mars with a velocity of 13 m/s, its height in meters t seconds later is given by y = 13t − 1.86t2. (Round your answers to two decimal places.) (a) Find the average velocity over the given time intervals.

    asked by david on October 1, 2012
  3. Physics

    A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

    asked by Steve on April 24, 2012
  4. geometry

    find the volume of the oblique cone height=25in radius=15in answer choice; 2,208.9in^3 1,472.6in^3 196.3in3 4,417.9in^3 I have tried to figure out but no luck

    asked by lilman on May 25, 2012
  5. physics

    A cannon mounted on a pirate ship fires a cannonball at 125 m/s horizontally, at a height of 17.5 m above the ocean surface. Ignore air resistance. (a) How much time elapses until it splashes into the water? (b) How far from the ship does it land?

    asked by katerina C. on December 15, 2010
  6. Geometry

    Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671ma

    asked by Ash on January 21, 2012
  7. other

    A cannon mounted on a pirate ship fires a cannonball at 125 m/s horizontally, at a height of 17.5 m above the ocean surface. Ignore air resistance. (a) How much time elapses until it splashes into the water? (b) How far from the ship does it land?

    asked by katerina C. on December 15, 2010
  8. physics

    A body is projected at an angle of 30degree to the horizontal with a velocity of 150metre per seconds.Calculate the time it takes to reach the greatest height,take g=10metre per seconds square and neglect air resistance.

    asked by scott on June 18, 2015
  9. Physics

    A rock is thrown vertically up into the air. It reaches a maximum height 15m above point where it was released. What is its initial velocity? a) 17 m/s b) 26 m/s c) 14 m/s d) 20 m/s I know the answer is a) 17 m/s and I got it wrong thinking it was d) 20

    asked by Marija on June 2, 2014
  10. Physics

    The range of a cannonball fired horizontally from a cliff is equal to the height of the cliff. What is the direction of the velocity vector of the projectile as it strikes the ground? (Ignore any effects due to air resistance.) ° (below the horizontal)

    asked by Anonymous on December 3, 2014
  11. algebra

    A 10 ft. long stem of bamboo is broken in such a way that its tip touches the ground 3 ft. from the base of the stem, as shown in the figure. What is the height of the break? please show me how to do it I'm reviewing for our final exam... thanks in solving

    asked by amber on October 11, 2015
  12. calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5]

    asked by John on January 31, 2018
  13. calc

    A window consists of a rectangular part of height h surmounted by a semicircle of radius r. The perimeter of the window is held constant at 10 feet, but h and r are allowed to vary. Find an expression for the rate of change of h with respect to r.

    asked by jump on September 30, 2012
  14. physics

    A cannon mounted on a pirate ship fires a cannonball at 125 m/s horizontally, at a height of 17.5 m above the ocean surface. Ignore air resistance. (a) How much time elapses until it splashes into the water? (b) How far from the ship does it land?

    asked by matt chirl on December 15, 2010
  15. Physics

    The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its speed is 1.4 m/s. Assume that the pulley is a uniform disk with a

    asked by Mary on March 8, 2010
  16. Physics

    A uniform rectangular sign of width 47.6 cm, height 25.0 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign.

    asked by Alex on April 23, 2012
  17. Math

    The highest dive in the Olympic Games is from a 10-meter platform. The height "h" is in meters of a diver "t" seconds after leaving the platform can be estimated by the equation, h=10+4.9t-4.9t^2 I don't know how to make a successful table for this. I

    asked by Conder on January 26, 2011
  18. Physics

    The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.91 m above the floor. When m1 hits the ground its speed is 1.5 m/s. Assume that the pulley is a uniform disk with a

    asked by Jon on March 8, 2010
  19. Maths

    How many silver coins ,2cm in diameter and of thickness 2mm,must be melted to form a showpiece in the form of frustum of a cone having height 9cm and radii of outer circular ends as5cm 3cm

    asked by Tanu on July 6, 2017
  20. Physics

    while on the moon, the Apollo astronauts enjoyed the effect of a gravity much smaller than that on earth. if Neil Armstrong jumped up on the moon with an initial speed of 1.51 m/s to a height of 0.700m, what amount of gravitational acceleration did he

    asked by Marissa on February 3, 2011
  21. Geometry

    Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. 3,028m2 3,971m2 1,357m2 1,671m2

    asked by Ash on January 23, 2012
  22. physics

    A cannon mounted on a pirate ship fires a cannonball at 125 m/s horizontally, at a height of 17.5 m above the ocean surface. Ignore air resistance. (a) How much time elapses until it splashes into the water? (b) How far from the ship does it land?

    asked by tammy mikols on December 16, 2010
  23. math

    Oatmeal is packed in a cylindrical container The diameter of the container is 13cm and its height is 24 cm. Determine in terms of TT (pi), the volume of the cylinder, in cubic centimeters v=TTr^2h v=TT6.5^2(24) v=1014 TT(pi) Is this correct? Thanks for

    asked by diane on May 26, 2014
  24. physics

    a player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 28 m/s. what is the maximum height attained by the ball? Round the answer to the nearest tenth of a meter.

    asked by faith on April 9, 2013
  25. Physics

    an ice block at 0 degree celcius is dropped from height 'h' above the ground. what should be the value of 'h' so that it just melts completely by the time it reaches the bottom assuming the loss of whole gravitational potential energy is used as heat by

    asked by Yogesh on June 13, 2014
  26. Physics

    An Alaskan rescue plane traveling 36 m/s drops a package of emergency rations from a height of 137 m to a stranded party of explorers.Where does the package strike the ground relative to the point directly below where it was released

    asked by Katie on November 3, 2011
  27. URGENT LANGUAGE ARTS URGENT~!

    Which answer explains why there isn’t a hyphen between well and behaved in the following sentence? The students were so well behaved that Ms. Irvin dismissed them early. (1 point) The words well and behaved don’t end in -ly. The words well and behaved

    asked by Gabby on April 12, 2013
  28. STUDENTS: PLEASE READ

    Please read Writeacher's post to All Students. Using HELP in your subject line doesn't give us a clue about what you need. As Writeacher said, please use a specific subject heading -- like MATH, ENGLISH GRAMMAR, PHYSICS. An even better subject heading

    asked by Ms. Sue on October 9, 2006
  29. Statistics

    In an exam, we randomly chose some students who get both the pretest and the posttest. We are interested in the difference of the score of two test. Assume that the ¦Ò of score difference is 10 and the difference follows a normal distribution. If the H0

    asked by Katherine on October 12, 2011
  30. Statistics

    5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? b. What percentage of exams will have

    asked by Zac on March 5, 2012
  31. Math

    Mr. Lin baked banana bread for a bake sale to raise money for the math team. He said that he added a spoonful of walnuts for each of the students in his three classes, and that he added more than 250 walnuts. He used the inequality 16w + 24w + 10w > 250 to

    asked by Sheryl on March 9, 2018
  32. English.

    Please check my answers? Letter of Recommendation Mary O'Dell PLTW Program Willow High School 1400 Old Tamah Road Irmo, SC 29067 April 11, 2007 Subject: Letter of Recommendation for Mr. Chris Moses To Whom It May Concern: Chris studied under my supervision

    asked by Q on March 12, 2015
  33. Writing

    Can you proofread my essay? The assignment was to write a problem-solution essay on a big social issue in our world. “Never doubt that a small group of thoughtful committed citizens can change the world; indeed, it's the only thing that ever has.” A

    asked by Monae on May 13, 2013
  34. Physics

    A group of Mechanical Engineering students are attempting to pull a large crate of mass M=175.0kg on a level driveway. The coefficient of static friction ms = 0.610. They use a rope of dubious quality to pull the crate as indicated in the figure. At what

    asked by Sarah on February 17, 2011
  35. English

    The thing I can't understand is the inversion subject verb in the sentence with "as" 1) The Asiatic lions are in danger of extinction, as are the Asiatic cheetahs. (like the Asiatic cheetahs/ as the Asiatic cheetahs are) 2) They have accepted my proposal

    asked by Henry2 on November 7, 2011
  36. English

    Lesson Objective Students can greet people whom they meet for the first time naturally, and they can introduce themselves and their friends to others. 1. Drawing attention 2. Introducing myself and my friend 3. Expressing gladness (Are the expressions

    asked by John on March 4, 2009
  37. science

    A student makes the following statement: Chocolate- covered donuts are 10 times better than plain, glazed donuts. Which of the following correctly describes the student’s statement? a-The student’s statement is a quantitative observation. b-The

    asked by Anonymous on September 14, 2013
  38. Calculus

    Please help me with the following 2 questions. 1. Find the area of the curved surface of a right-circular cone of radius 6 and height 4 by rotating the straight line segment from (0,0) to (6,4) about the y-axis. 2. Use the Maclaurin polynomial of degree 4

    asked by Sara on November 7, 2011
  39. applied physics

    An object is thrown vertically up ward from the ground with initial velocity 1960cm/s Neglecting air resistance, find the maximum height reached and the total time taken to return to the straight point ,/using first order differential equations/

    asked by Ermiyas Abas on November 16, 2016
  40. physicssss

    At six flags great adventure amusment park in new jersy, a popular ride known as "free fall" carries passangers up to a height of 33.5 m and drops them to the ground inside a small cage. How fast are the passengers going at the bottom of this eshilirating

    asked by confusedd!HELPP!!! on September 17, 2007
  41. Math

    A tile is in the shape of a parellogram of base 5cm and corresponding height equal to 3cm.Calculate the number of tiles required to cover an area of 45m^2. Plz gve me fst reply nd ful soltn nd ans is 3000tiles

    asked by Simran kaur on September 13, 2012
  42. Math

    How are decimals used in everyday life? The main use I can think of is in money. Money is expressed in decimal form. Although for everyday use, we rely on inches, feet and yards for distance, other countries use decimal measures — millimeters,

    asked by Desiree on August 28, 2005
  43. S.E.U

    The area A of a triangle with base b and height h is given by A= 1/2 bh. Find the area when b= 22 m (meters) and h= 26 m. The area is ??? m2

    asked by loda on February 5, 2016
  44. geometry

    in a triangle D =h+4, area of triangle is 120 sq .cm . then find the base and height of triangle

    asked by msmadhushree on February 7, 2013
  45. maths

    csa of a cone is twice the other cone if the slant height of the other cone is twice of first one then the ratio of their radius is

    asked by manpreet on January 6, 2013
  46. pre algebra

    find the area of a trapezoid with height 6 centimeters and bases 8 centimeters and 4 centimeters.

    asked by lavena on June 16, 2010
  47. math

    If a rectangular has 54 feet im volume and 6 feet im im length and 3 feet in width what is the height

    asked by alexis on March 21, 2012
  48. Statistic

    GMAT and GPA Scores for 12 MBA Students Compute the covariance and the determination and interpret your findings. GMAT- 599 689 584 631 594 643 MBA GPA- 9.6 8.8 7.4 10.0 7.8 9.2 GMAT- 656 594 710 611 593 683 MBA GPA- 9.6 8.4 11.2 7.6 8.8 8.0 Show me

    asked by teresa on January 31, 2011
  49. English

    .) Read the following sentences from "The Pin". "That all changed when my family moved. My new school is three times bigger than my old school. At first, no one here knew me. The kids were polite, but they did not treat me like a good friend. For a few

    asked by Emmy on January 29, 2017
  50. math

    your friend tosses a ball into the air at an initial velocity of 18 feet per second.The equation h=-8t^2+18t+5 models the height h of the ball t seconds after it was thrown. When did the ball reach its highest point?

    asked by alex on April 22, 2018
  51. physics

    A box with a mass of 2 kg is lifted (without acceleration) through a height of 8.0 m in order to place it upon the shelf of a closet. (a) What is the increase in potential energy of the box? 1 . J (b) How much work was required to lift the box to this

    asked by Sara on March 5, 2012
  52. Math

    In high school, I played soft ball. I hit the ball into the air with an upward velocity of 35 ft. The equation that gives the height (h) of the ball at any time (t) is: h(t)= -15t2 + 35ft + 1.0. What is the y-coordinate of the vertex? Use: x=-b/2a

    asked by Kendra on April 29, 2016
  53. Physics

    A spring that has a force constant of 1100 N/m is mounted vertically on the ground. A block of mass 1.90 kg is dropped from rest from height of 1.65 m above the free end of the spring. By what distance does the spring compress?

    asked by Pranav on November 2, 2010
  54. Physics please help!!

    A 86.0 kg diver falls from rest into a swimming pool from a height of 6.30 m. It takes 1.86 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.

    asked by Megan on February 11, 2011
  55. Math / Physics

    Many birds drop clams or other shell fish in order to break the shell and get the food inside. Suppose a crow drops a shell from a height of 5.2m. How long does it take to reach the ground?

    asked by Steph on February 15, 2012
  56. calculus

    grain is being poured through a chute at rate of 8 ft^3/min and forms a conical pile whose radius of the bottom is always 1/2 the height of pile. How fast is circumference increasing when the pile is 10 feet high?

    asked by Liz on October 7, 2012
  57. Math

    Water is flowing at the rate of 50m^3/min from a concrete conical reservoir of base radius 45m and height 6m. How fast is is the water level falling when the water is 5m deep?

    asked by Peggy on November 30, 2012
  58. Math

    Sharon is moving up to the attic and wants to paint one wall blue. The wall is a triangle with a base of 16 feet and a height of 13. What is the area of the wall to be painted? (1 point) A: 10.4 ft B: 52 ft******* C: 104 ft D: 208 ft. Help meeeeeee!!!!

    asked by AngelDabSwag on May 7, 2018
  59. physics

    Lance threw a ball straight up into the air. The ball's gravitational potential energy at its peak height was 0.4 joules, and its speed when it hit the ground was 4 meters per second. What was the mass of the ball?

    asked by Stephanie on March 2, 2011
  60. Physics

    If a frictionless incline has a difference in height from one end to the other of 19.5 cm and has a length along the incline of 1.36 m, find the time it takes for a block of 1.1 kg, starting from rest, to slide down the ramp from the top to the bottom of

    asked by name on February 15, 2014
  61. math

    an object is thrown upward from the top of a 80-foot building with a initial velocity of 65 feet per second. The height h of the object after t seconds is given by the equation h=-16t2+64t+80. when will the object hit the ground

    asked by Anonymous on October 12, 2012
  62. math

    A rocket follows a parabolic trajectory. After t seconds, the vertical height of the rocket above the ground, in metres, is given by H(t) = 37t – t . Find the length of time the rocket is in the air. Could you please explain me, why answer is 37s? Thank

    asked by Lucas on October 24, 2013
  63. Physics

    A stone is projected horizontally from the top a tower with a speed of 5m/s.It lands on the ground level at a horizontal distance of 20m from the foot of the tower.Calculate the height of the tower.(g=10m/s2)

    asked by Lawson on June 19, 2016
  64. Physics

    A spring that has a force constant of 1200 N/m is mounted vertically on the ground. A block of mass 1.60 kg is dropped from rest from height of 1.50 m above the free end of the spring. By what distance does the spring compress?

    asked by Jeff Kinka on June 25, 2016
  65. physics steve or damon help!!!!

    A stone is thrown horizontally from the top of a vertical wall with a velocity of 15m/s hit the horizontal ground at a point 45m from the base of the wall.calculate the height of the wall g=10

    asked by david on March 28, 2016
  66. Math

    An object is thrown from the top of an 80 foot building with an initial velocity of 64 feet per second. The height (h) of the object after (t) seconds is given by the quadratic equation h=-16t+64t+80 .When will the object hit the ground?

    asked by Medusa. on September 6, 2012
  67. science

    a ball is thrown vertically upwards from the top of a tower with a speed of 100 ms-1. it strikes the pond near the base of the tower after 25 seconds. the height of the tower is? a)500m b)125m c)625m

    asked by user001 on September 21, 2014
  68. Physics

    A rocket is fired vertically with an acceleration of 16m/s^2. After time T, the rocket's engine runs out of fuel and it begins to fall freely. The maximum height of the rocket is 940m, what is the minimum value of T?

    asked by Liam on September 30, 2016
  69. Physics

    A baseball batter hits a long fly ball that rises to a height of 49 m. An outfielder on the opposing team can run at 7.7 m/s. What is the farthest the fielder can be from where the ball will land so that it is possible for him to catch the ball?

    asked by Sara on September 10, 2012
  70. Math

    The underside of a bridge has a shape of a parabolic arch. It has a maximum height of 30m and a width of 50m. Can a sailboat with a mast of 28m above the water pass under the bridge 8m from the middle of the bridge?

    asked by Lorrie on May 26, 2014
  71. trig

    Question Part Points Submissions Used The angle of elevation to the top of a very tall Building is found to be 7° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.

    asked by sanam on October 2, 2011
  72. help

    A person standing 34 meters from the foot of a chimney finds that the measure of the angle of elevation to the top of the chimney is 52 degrees. To the nearest tenth of a meter, find the height of the chimney.

    asked by Anonymous on May 30, 2014
  73. physics

    4. A gun’s bullet was launched horizontally with a speed 600m/s. It fell to the ground 300m away from the gun. a. How long was the bullets flight? b. At what height was the gun’s barrel at the moment of the shot? 5.

    asked by brian on February 9, 2016
  74. physics again...

    A 62.0 kg diver falls from rest into a swimming pool from a height of 3.50 m. It takes 1.92 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.

    asked by rory on February 28, 2008
  75. physics

    A 62.0 kg diver falls from rest into a swimming pool from a height of 3.50 m. It takes 1.92 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.

    asked by rory on February 28, 2008
  76. physics

    A 62.0 kg diver falls from rest into a swimming pool from a height of 3.50 m. It takes 1.92 s for the diver to stop after entering the water. Find the magnitude of the average force exerted on the diver during that time.

    asked by rory on March 1, 2008
  77. college algebra

    An open box is made from a square piece of cardboard 20 inches on a side by cutting identical squares from the corners and turning up the sides.(a) Express the volume of the box, V , as a function of the length of the side of the square cut from each

    asked by danny on September 27, 2012
  78. geometry

    The figure shown is a rectangle. the green shape in the figure is a square. The blue and white figures are rectangles, and the area of the blue rectangle is 24 square inches. a. write an expression for the area of the entire figure that includes an

    asked by catsanddogs on April 17, 2015
  79. PHYSICS

    A superball of mass m, starting at rest, is dropped from a height hi above the ground and bounces back up to a height of hf. The collision with the ground occurs over a total time tc. You may ignore air resistance. (a) What is the magnitude of the momentum

    asked by Anonymous on October 25, 2013
  80. Physics Classical Mechanics

    A superball of mass m, starting at rest, is dropped from a height hi above the ground and bounces back up to a height of hf. The collision with the ground occurs over a total time tc. You may ignore air resistance. (a) What is the magnitude of the momentum

    asked by Anonymous on October 28, 2013
  81. physics(easy)

    A superball of mass m, starting at rest, is dropped from a height hi above the ground and bounces back up to a height of hf. The collision with the ground occurs over a total time tc. You may ignore air resistance. (a) What is the magnitude of the momentum

    asked by Anonymous on October 24, 2013
  82. PHYSICS

    A superball of mass m, starting at rest, is dropped from a height hi above the ground and bounces back up to a height of hf. The collision with the ground occurs over a total time tc. You may ignore air resistance. (a) What is the magnitude of the momentum

    asked by Anonymous on October 24, 2013
  83. statistics

    a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is uniformly distributed within a range of 35 minutes to 55 minutes. determine the standard deviation, what is the probability a particular

    asked by sam on January 13, 2015
  84. US history

    Can you check if my answers are correct? Martin Luther King, Jr.’s eloquence hid the fact of his lack of formal education beyond the eighth grade. is it true? When black students tried to enter Little Rock’s Central High School in 1957, the governor

    asked by Denisse on April 20, 2014
  85. "Y912f", please givethis note to your pare

    "Y912f", please give the follow note to your parents. Dear Parents of Y912f, Your daughter has been receiving help from Jiskha for quite some time. Our task on this site is to "help" students learn, not do their work for them. It has become obvious that

    asked by GuruBlue on May 16, 2010
  86. child care

    an important step in reducing bias is to (a)help children choose the right friends (b)provide children with appropriate models (c)avoid children's questions about differences (d()reinforce media messages. i put b am i correct To encourage positive self

    asked by Eustace on July 26, 2011
  87. Math

    Write the ratio as a fraction in lowest terms of the number of residents at Adams to the number of students at Dodge. Adams=115 residents Dodge=295 residents Evans=140 residents Fisher=245 residents Brown=135 residents Carver=200 residents I have no idea

    asked by Glen on August 30, 2013
  88. Calc, Implicit Differentiation

    1) Let x^3 + y^3 = 28. Find y"(x) at the point (3, 1). y"(3)= The correct answer is: -2*3*28 = -168 3x^2 + 3y^2(dx/dy) = 0 6x + 6y(dx/dy) = 0 dx/dy = -6(3)/6(1) = -3 That's as far as i get... i don't even know if that's started right... You have x^3 + +

    asked by Michael on October 21, 2006
  89. child care

    hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his

    asked by tiffany on December 12, 2010
  90. Please check answers/ childcare

    hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his

    asked by tiffany on December 12, 2010
  91. Childcare Manegment /please chech answers

    hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his

    asked by tiffany on December 11, 2010
  92. overview of teaching techniques

    how should students be grouped to best encourage learning? (a)according to same abilities (b)according to same attitudes (c)according to same interests (d)according to a common task (my answer) which of the following types of questions are unfortunately

    asked by susue on August 25, 2011
  93. math

    My Math Problem When wrapping a birthday gift for his mother, Kenji adds an additional 2.5 square feet of gift wrap to allow for overlap. How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches wide, and 2 feet high? My

    asked by Americal on February 21, 2014
  94. ECN (Micro)

    Use the concept of opportunity cost to explain the following. a. more people choose to get graduate degrees when the job market is poor. b. more people choose to do their own home repairs when the economy is slow and hourly wages are down. c. there are

    asked by Dalia on October 3, 2013
  95. Math

    The ratio of 7th to 8th graders in a play is 2:3. There are 30 students in the play. How many are 8th graders? S/30 x2/3=3s/3=60/3= 20 8th graders. Can someone check this for me if wrong tell were.

    asked by Johnnie on February 6, 2019
  96. Dynamics

    A French artillerist, Captain A. Le Duc, developed an empirical formula for the velocity of a projectile in terms of the distance traveled by the projectile in the bore. For a 155-mm gun this equation is v = 3309s /(70 + s) where s is the distance traveled

    asked by stan on January 19, 2011
  97. Statistics

    A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that

    asked by Tommy on October 6, 2015
  98. english

    Most students do not like english class. They think its a waste of there time and energy. Ain’t nobody likes to right papers and take tests anyway? Me and you dont. My friend Johnny now him know alot about this grammar stuff. I always am asking he to

    asked by Anonymous on August 29, 2012
  99. business

    - Describe the steps involved in making a hamburger. - Think of your favorite food product. Describe the raw materials that make up the food, how it might have been processed, and then manufactured into the food you enjoy. (I don't really care which food

    asked by Anonymous on October 12, 2006
  100. statistics

    14. Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking—even if they are not exposed to the usual

    asked by rick on September 18, 2010