01/31/13

a boat traveled downstream a distance of 75 miles and then came right back.
a boat traveled downstream a distance of 75 miles and then came right back. if the speed of the current was 20 mph and the total trip took 5 hours, find the average speed of the boat relative to... more
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Expert Answers •2

01/31/13

a grain barge travels on a river from point a to point b loading and unloading grain.
a grain barge travels on a river from point a to point b loading and unloading grain. the barge travels at a rate of 5mph relative to the water. the rive flows downstream at a rate of 1mph. if the... more
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Expert Answers •1

01/31/13

the length of a rectangle is 3 centimeters less than five times its width. its area is 14 centimeters.
the length of a rectangle is 3 centimeters less than five times its width. its area is 14 centimeters. what are the dimensions of the rectangle?
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Expert Answers •2

01/31/13

512 ft. h= -16t^2+64t+512.
a ball is thrown upward with an initial velocity of 64 ft/s from a height 512 ft. h= -16t^2+64t+512. after how many seconds will the ball reach the ground? (i.e. for what positive value of t is h=0?)
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Expert Answers •1

01/31/13

the square of a number plus the number is 72
the square of a number plus the number is 72
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Expert Answers •1

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