1. Physics

    Train A starts at 4 miles South of a bridge and heads North at a constant speed of 30 miles per hour. Train B starts 6 miles North of the bridge. a. What velocity must Train B have so that the two trains cross the bridge at the same time? b. If Train B

    asked by Dan on February 26, 2013
  2. math

    The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches. What is the volume of a pyramid with a base area of 10

    asked by julie on November 15, 2014
  3. algebra

    the elspaso middle school girls basketball team is going from el paso to san antonio for the texa state championship. The trip will be 560 miles. Their bus travels at an average speed 60 miles per hour.

    asked by malik on April 14, 2013
  4. Physics

    Bob runs a marathon (26 miles) in 4 hrs. Note 1609 is 1 mile. I found the average speed miles/hour which is equal to 6.5 mi/hr. I need to find meters/second? So 1609m/mi * 6.5mi/hr * 1hr/3600sec = ??m/s correct?

    asked by Jennifer on September 13, 2006
  5. Math

    Miguel is 5 feet 10 inches tall. On a sunny day he casts a shadow 4 feet 2 inches long. At the same time, a nearby electric tower casts a shadow 8 feet 9 inches long. How tall is the tower? How do I set this up into ratios to figure out the tower height?

    asked by Anonymous on January 16, 2015
  6. Math

    As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to

    asked by AC on April 10, 2015
  7. Math

    I have 3 questions: 1) If ABC and DEF are three- digit numbers, which of the following could be the number of digits in the product of ABC and DEF? i. 4 ii. 5 iii. 6 I don't have the vaguest idea on how to do this and what type of math it is part of... My

    asked by Bethany on July 8, 2014
  8. algebra

    A rental truck costs $50 plus $0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is $70. Solve part (b)

    asked by Dee on February 13, 2016
  9. algebra1

    Alan went from San Francisco to Los Angeles ,about 400 miles,averaging (x+5)mph.On his journey from Los Angeles to Redding,about 500 miles,the average (x-5)mph.Then he returned to San Francisco,about 200 miles,averaging (x^2-25)mph.How long did it take

    asked by tala on April 11, 2013
  10. Math

    Suppose a baseball player had 211 hits in a season. In the given probability distribution, the random variable X represents the number of hits the player obtained in the game. x P(x) 0 0.1879 1 0.4106 2 0.2157 3 0.1174 4 0.0624 5 0.0060 a.) Compute and

    asked by Amanda on November 26, 2013
  11. Math

    If a car averages about 22 1/2 miles per gallon , and the capacity of the tank is 16 1/4 gallons, how many miles would be expected on a tank of gas?

    asked by Mike on February 9, 2008
  12. 6thMath

    You walked 2⁄15 miles from your chemistry class to your economics class at a constant speed of 0.8 miles per hour. How long did this take you?

    asked by PrincessLeaya on February 15, 2018
  13. math,

    alexander jogs 4 miles every 30 minutes if he jogs at this rate how long will it take him to jog a total distance of 24 miles?

    asked by Anonymous on March 19, 2012
  14. math

    if a plane is traveling at an altitude of 11.9 miles and is 46 miles from the airport and is descending at a 12 degree angle, what is the mph to the airport?

    asked by Greg on September 19, 2013
  15. Math

    A car traveled 281 miles in 4 hours 41 minutes.What was the average speed of the car in miles per hour?

    asked by Luse on May 10, 2018
  16. algebra

    Mia jogs 3 kilometers in 20 minutes. There are about 0.6 miles in a kilometer. What is Mia’s approximate speed in miles per minute?

    asked by Anonymous on December 1, 2015
  17. math

    Value ways 2 3/5 miles each day.Bill runs 10 miles once every 4 days. In 4 days, who covers the greater distance?

    asked by krystal on February 5, 2014
  18. math

    a person had to drive 1417 miles. They drove 9 hours a day for 3 days. How many miles per hour did they drive?

    asked by Allie on April 30, 2015
  19. Math

    Yesterday, Jake rode his bike 6.6 miles. Today he rode2.4 times as far, how many miles did he ride today?

    asked by Lexi-girl on August 24, 2017
  20. Drivers Ed.

    Say your car gets 25 miles to the gallon. My destination is about 250 miles away. How many times will i have to fill my car up before I run out if gas?

    asked by Kate on September 8, 2016
  21. twh

    Isaiah walks 3 miles due north, turns and then 5 miles due east. How far is he from his starting point?

    asked by lol on March 20, 2014
  22. ?????

    How do you convert miles per minute into minutes per miles?? Help me please! invert. 30miles/min convets to 1min/30miles

    asked by kayla on February 9, 2007
  23. Triggggggg

    A ship is 90 miles south and 20 miles east of port. The captain wants to travel directly to port. What bearing should be taken?

    asked by Jill on April 28, 2011
  24. math

    Isaiah walks 3 miles due north, turns and then 5 miles due east. How far is he from his starting point?

    asked by quenton on February 26, 2014
  25. Math

    If a car averages about 22 1/2 miles per gallon , and the capacity of the tank is 16 1/4 gallons, how many miles would be expected on a tank of gas?

    asked by Mike on February 11, 2008
  26. Trigonometry

    A ship is 50 miles east and 35 miles south of port. If the captain wants to sail directly to port, what bearing should be taken?

    asked by AwesomeGuy on February 4, 2013
  27. proportion word problems

    darrell drove 187 miles in 3 hours. What was darrell's average rate of speed in miles per hour

    asked by nichelle on December 1, 2014
  28. Math 7th

    A bus travels 480 miles on 8 hrs. At the same rate, how long would it take the bus to travel 735 miles?

    asked by 7th grader on March 30, 2011
  29. Physics

    The displisacement from A to B is 36 miles at 12 degress N of West. The displacement from B to C is 39 miles at 21 degrees N of E. What is the displacement from A to C by graphical means and by compnents?

    asked by Andy on September 9, 2012
  30. Algebra Geometry 1 & 2

    A car traveled 281 miles in 4 hours, 41 minutes. What was average speed of the car in miles per hour?

    asked by Algebra on June 28, 2016
  31. Algebra

    A car is traveling at an average speed of 54 miles per hours. How many minutes will it take the car to travel 117 miles

    asked by Anonymous on May 8, 2014
  32. Math 5th

    Val walks 2 3/5 miles each day. Bill runs 10 miles once every four days. In 4 days who covers more distance?

    asked by Kerry on January 27, 2014
  33. Algebra

    a plane travelling 600 miles per hour is 30 miles from an airport at 4:58pm. At what time will it arrive at the airport

    asked by Amina on August 20, 2015
  34. math,help

    how do you convert miles to feet. what formula do i use. one mile=5280feet so you would multiply the number of miles to 5280 to get feet thank you

    asked by jasmine20 on January 15, 2007
  35. Dyanamics

    A force acting on the body of mass 10kg changes its velocity from 30 miles/hr to 45 miles/hr find the impulse of the force...

    asked by vinod on December 6, 2013
  36. math

    your car gets 33 miles per gallon of gasoline, and you drive at an average speed of 44 miles per hour. How much gas do you use in an hour?

    asked by Debby on April 30, 2019
  37. Math

    24 miles per gallon to miles per quart

    asked by Anonymous on January 19, 2017
  38. prealgebra

    change 40 miles per hour to miles per second

    asked by garrett on March 5, 2013
  39. Algebra

    How do I convert 40 miles per hour into miles per second?

    asked by Sam on November 17, 2008
  40. Math

    Math - Zo, Wednesday, April 22, 2015 at 8:44pm A wheel has s radius of 9 inches. If the wheel is rolled on a flat surface, how many revolutions will it take for the wheel to travel 90 ~ pie inches

    asked by Zo on April 22, 2015
  41. Mathematics

    Low Earth orbiting satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles. a. Find the angular

    asked by Amie on November 19, 2007
  42. Pre-Calculus

    Venus orbits the sun in an approximately circular path. Venus is about 67 million miles from the sun. A comet is located 80 million miles north and 73 million miles west of the sun. The comet follows a straight-line path and exits Venus's orbit at the east

    asked by Anonymous on October 4, 2015
  43. geometry

    Mr. Horn purchased a cylindrical aquarium for his office. The aquarium has a height of 25 1/2 inches and a radius of 21 inches. What is the volume of the aquarium in cubic feet?

    asked by Lavern on February 29, 2012
  44. Math

    A carpenter has a board that is 4 yards long. He cuts it into 3 equal pieces. How many inches long is each piece? Is this correct? My answer is 46 inches long

    asked by Amy on August 12, 2015
  45. Math

    John has closed square prism with a base of 36 square inches and a surface area of 360 square inches. Figure out its height?

    asked by Sam on May 31, 2016
  46. Trigo

    A belt connects two pulley, one of radius 5 inches and the other 18 inches. Through how many revolutions will the smaller pulley make if the larger pulley makes 6 rev?

    asked by Cjanito on August 17, 2016
  47. math

    the great goofy gadget comes with a page of instructions. when the page is unfolded, it is 81 square inches. if one side of the page is 9 inches wide, what is the perimeter?

    asked by a on January 26, 2016
  48. Math

    The surface area of a particular cube is 600 square inches. When the edges of the cube are doubled in length, what is the volume of the new cube, in cubic inches?

    asked by ABC123DoReMi on March 15, 2011
  49. geometry

    If the perimeter of a particular square is 2011 inches, what is the area of the square, in square inches? Express your answer in decimal form to the nearest hundredth.

    asked by Molly on January 25, 2011
  50. 3 grade math

    I can answer this question, but I need to explain to our child how to solve it using the method requested, not an algebra solution. Child is becoming frustrated and confused while attempting to answer these questions. the instructions for solving, are try

    asked by Paulette on August 23, 2012
  51. Physics

    Suppose that the light bulb in the figure is a 61.8-W bulb with a resistance of 218 Ω. The magnetic field has a magnitude of 0.37 T, and the length of the rod is 0.59 m. The only resistance in the circuit is that due to the bulb. What is the shortest

    asked by Elizabeth on March 14, 2013
  52. math

    Elliott's bed is 75 inches long. During his growth spurt, Elliott grew 6 inches. Before his growth spurt, he was 5 feet 11 inches tall. How much shorter is Elliott's bed than Elliott?

    asked by hayden on November 27, 2018
  53. Geometry

    the city council is planning a new city park on a triangular plot of land formed by three intersecting streets the designer placed the triangle on a grid to determine the side lengths and angle measures needed for the purchase and placement of a fence

    asked by Anonymous on November 23, 2015
  54. geometry

    the city council is planning a new city park on a triangular plot of land formed by three intersecting streets the designer placed the triangle on a grid to determine the side lengths and angle measures needed for the purchase and placement of a fence

    asked by Hien Kieu on November 30, 2018
  55. Quadratic Functions in Algebra

    Suppose C(x)=x^2−6x+20 represents the costs, in hundreds, to produce x thousand pens. How many pens should be produced to minimize the cost? What is the minimum cost? Number of pens to minimize cost: Minimum Cost:

    asked by Jared on March 18, 2014
  56. 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 on May 22, 2012
  57. math

    if I am traveling by plane from Marshfield to Minnepolis (150 Statue miles) which equals 172.5 nautical miles. Our true course is set at 207 degrees. Theresa os a wind blowing from 90 degrees at 10 knots. Normally the plane travels at 100 knots per hour,

    asked by Theresa on October 31, 2009
  58. radio

    if i have 6 students with a height of 88 inches and a armspand of 32 inches and 2 students with a height of 62 and anarmspand of 22 inches. what is the ratio? Many ratios can be determined from this set of data. You could find the ratio of the number of

    asked by mike on June 28, 2007
  59. ma

    A car travels 55 miles per hour and a plane travels 15 miles per minute. How far does the car travel when the plane travels 500 miles?

    asked by kely on September 1, 2012
  60. math

    A car travels 55 miles per hour and a plane travels 15 miles per minute. How far does the car travel when the plane travels 500 miles?

    asked by Khari on December 14, 2009
  61. Math

    A square with a perimeter of 20 units is graphed on a coordinate grid. The square is dilated by a scale factor of 0.4 with the origin as the center of dilation. If (x, y) represents the location of any point on the original square, which ordered pair

    asked by Lil Star on April 9, 2019
  62. Math

    Algebra 2 A sequence is of pyramids is created where the first pyramid has a height of 6 inches and a base area of 10 inches, for a volume of 20 cubic inches. The height of the next pyramid is twice the height of the previous pyramid. The input of the

    asked by Brenda on May 5, 2016
  63. Brooms

    Can you make a broom using twigs or sticks with leaves if not how can we Thank you for using the Jiskha Homework Help Forum. Here is one way to make a twig broom: First, the twig broom. This is easily made as follows: Cut a handle an inch thick, and shape

    asked by Minnie on November 15, 2006
  64. algebra

    how do I solve this and show the work: a motorboat went upstream at 15 miles per hour and returned downstream at 20 miles per hour. How far did the boat travel one way if the round trip took 3.5 hours?

    asked by jessica on May 29, 2013
  65. Math

    Joseph rode his bicycle for 10 miles. Then he increased his speed to an average of 15 miles per hour for the next h hours. Write an equation for the total distance he rode. thanks in advance!

    asked by anonymous on April 20, 2009
  66. Math

    The fuel mileage on Ryan's car is 20 miles per gallon. After filling the tank, which has a capacity of 15 gallons, how far can he go before his car runs out of gas? I say 300 miles, is this correct?

    asked by B.B. on June 21, 2009
  67. Math

    It takes a plane 40 minutes longer to fly from Boston to Los Angeles at 525 miles per hour than it does to return at 600 miles per hour. How far apart are the cities?

    asked by Julie on November 23, 2007
  68. Math

    Gabriel can ride his bike three times faster than he can run. He runs 9 miles and bikes 45 miles. If the total time for both activities is four hours, how fast can he run ?

    asked by Anonymous on October 31, 2016
  69. math

    Sove the follwing application. A salesperson drove 238,159,87,163, and 198 miles (mi) on a 5 day trip. What was the mean number of miles driven per day?

    asked by TJ on September 8, 2008
  70. math 15

    find the minimum height above the surface of the earth so that the pilot at point a can see an object on the horizon at c 125 miles away. assume the diameter of the earth to be 8000 miles.

    asked by ellen on August 13, 2013
  71. Geometry

    A pilot is flying at a speed of 300 miles per hour and the wind is blowing due north at 50 miles per hour.What is the magnitude of the resultant velocity of the plane?

    asked by Kimmy on June 6, 2017
  72. Math MDM4U

    Event A represents the act of drawing a rank of eight from a standard deck of 52 cards, if B represents the event of drawing any diamond after the first card has been replaced into the deck, what is the probability of A and B.

    asked by Lorrie on February 26, 2011
  73. math

    A cylinder labeled X has a height of 10 inches and a radius of 15 inches. Another cylinder labeled Y has a height of 40 inches and a radius of 60 inches. The volume of cylinder Y is _______ times the volume of cylinder X.

    asked by Anonymous on June 3, 2012
  74. Math

    The weekly rental cost of a 20 foor recreational vehicle is $129.50 plus $0.15 per mile. -Find a linear function that express the cost C as a function miles driven m. - What is the rental cost if 860 miles are driven? -How many miles were driven if the

    asked by Rony on March 7, 2010
  75. Math

    The distance that light travels in 1 year (a light year) is 5.88x10^12 miles. If a star is 2.4x10^8 light years away, what is the distance to that star in miles? Answer in standard notation. I put the answer 1411200000000000000000 miles and it says I'm

    asked by Katlyn on October 4, 2009
  76. Math

    The distance that light travels in 1 year (a light year) is 5.88x10^12 miles. If a star is 2.4x10^8 light years away, what is the distance to that star in miles? Answer in standard notation. I put the answer 141120000000000000000 miles and it says I'm

    asked by Anonymous on October 3, 2009
  77. Math

    Three fifth of the members of a hiking trip club went on the last hiking trip. If 39 people went on the trip how many are in the club? Mathew travels two and one half miles to get to school. This is 3 times the distance that Jennifer travels . How far does

    asked by Sunny on September 27, 2015
  78. Pre-Calculus

    A window has the shape of a square surmounted by an isosceles triangle. The sides of the square are length x. The The perimeter of the window is 90 inches. Thus, the perimeter of the triangle is x+2y. So, 90 inches = 3x+2y. (a) Write an equation for the

    asked by SpencerCH on January 23, 2011
  79. Physic Help

    In heavy rush-hour traffic in Atlanta, you drive in a straight line at 21 mph for 5 miles. Then you have to stop for 10 minutes and finally drive slowly by a car wreck that is 2 miles away at a steady 15 mph. After the wreck, the road is clear, and you can

    asked by Megan Lee on September 3, 2012
  80. 8th grade math

    Hoshi walks 10 meters in 3 seconds. A. What is her walking rate? B. At this rate, how long does it take her to walk 100meters? C. Suppose she walks this same rate for 50sec. How far does she walk? D. Write an equation that represents the distance d that

    asked by david on August 25, 2011
  81. Math

    According to a rating agency, a car's MPG (miles per gallon) ratings are: 25 MPG for city and 30 MPG for highway driving. A driver spent $20.00 (the gasoline costs $1.25/gallon) on a combined city and highway trip of 450 miles. How many miles "C" in city

    asked by Andrea on July 28, 2008
  82. Math

    According to a rating agency, a car's MPG (miles per gallon) ratings are: 25 MPG for city and 30 MPG for highway driving. A driver spent $20.00 (the gasoline costs $1.25/gallon) on a combined city and highway trip of 450 miles. How many miles "C" in city

    asked by Andrea on July 28, 2008
  83. algebra

    The sides of a square are three to the power of two sevenths inches long. What is the area of the square? nine to the power of four sevenths square inches three to the power of four sevenths square inches three to the power of the fraction four over forty

    asked by oscar on September 12, 2015
  84. calculus

    Suppose the function G(t) represents a test grade (out of 100 points) as a function of hours studied. If G(t)=-0.046t^3+0.915t^2+38.005 points, what is (dG/dt)when t=4? Round your answer to the nearest point per hour. a. 50 points per hour b. 3 points per

    asked by Roger on September 20, 2011
  85. Geometry

    A square piece of cardboard, 24 inches by 24 inches, is to be made into an open box by cutting out each of the four corners. Each side of the box will then be folded up. Find the maximum volume that the box can hold.

    asked by Tom on November 13, 2014
  86. calculus

    a splenical ballon is being inflated @ 10 cubic inches per secound. how fast is the radius of the ballon increasing when the surface area of the ballon is 2 pi square inches( answer to 4 decimal places)?

    asked by john on October 24, 2011
  87. Algebra

    I have to explain how I might apply rational expression to my everyday life. I have to explain the application and discuss what the equation might be. Is this a good example? You go shopping for a big flat-screen HDTV. They always measure TVs diagonally,

    asked by Jess on June 22, 2007
  88. physics

    a body travelling along a straight line travels one half of the total distance with the velocity V0.The remaining part of the distance was covered with the velocity of V1 for half of the time and with velocity V2 for other half of time. Find average

    asked by samarth on May 22, 2015
  89. Math

    Can someone please check my answers? A yard has a square gate that has an area of 8 square meters. 1. What is the height of the gate in meters? Answer: 28 meters 2.How many feet would that be? Answer: 8.4 feet 3. If each side was 1 foot longer, what would

    asked by Chloe on April 28, 2015
  90. Algebra

    I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO: what's the quadratic form of 1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to

    asked by charlie on March 21, 2007
  91. Response to DWRLS

    I am still on this weight and elevation question. w=Cr^2 for r= r= quare root c/w Suppose that an object is 100 pounds at sea level. find the vlaue of C tat makes sense. Sea level is 3963 miles from the center of the earth. Wouldn't this be 100=C/(3963)^2

    asked by Marysvoice on January 29, 2008
  92. Math

    Angela can run 3 miles in 22 minutes. At this rate, how many miles could she run 33 minutes. I got 4.5 miles. Is this right

    asked by Johnnie on April 24, 2019
  93. Math

    According to a rating agency, a car's MPG (miles per gallon) ratings are: 25 MPG for city and 30 MPG for highway driving. A driver spent $20.00 (the gasoline costs $1.25/gallon) on a combined city and highway trip of 450 miles. How many miles "C" in city

    asked by Andrea on July 26, 2008
  94. algebra

    HELP!! It takes 64 inches of ribbon to make a bow and wrap the ribbon around a the box. The box takes 30 inches of ribbon. The width of the box is 12 inches. What is the height of the box?

    asked by sammie on November 3, 2010
  95. Chemistry

    A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of

    asked by Anna on February 10, 2014
  96. Chemistry

    A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of

    asked by Anna on February 10, 2014
  97. Chemistry

    A 76.00-pound flask of mercury costs $151.50. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values. What is the price of one pound of mercury? =$1.99 What is the price of

    asked by Anna on February 10, 2014
  98. Math- I have no idea how to do this PLZ HELP!

    Josefina needs enough ribbon to make 90 bookmarks. Each bookmark is to be 5 and 7/9 inches long. Estimate how many yards of ribbon she should buy. (5+7/9)*90 450 + 70 520 inches ; divide by 36 Buy 15 yards. (5+7/9)*90 450 + 70 520 inches ; divide by 36 Buy

    asked by Mike on July 2, 2007
  99. Chemistry

    separate this redox reaction into its component half-reactions. O2 + 4Cu-->2CuO Oxidation half-reaction: ? Reduction half-reaction: ? I believe that the Oxidation is copper and that reduction is oxygen. So I tried to write it as 4Cu^+ --> 4Cu + 4e^- O2^2-

    asked by Sophie on April 28, 2014
  100. physics

    Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 =

    asked by jr on January 26, 2011