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Chapter 9: Q 759 (page 1153)
In the following exercises, simplify.
The simplification of the given expressionis
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Accident investigation: An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks was 175 feet. Use the formula to find the speed of the vehicle before the brakes were applied. Round your answer to the nearest tenth.
Try It.
Solve:
In the following exercises, simplify and rationalize the denominator.
Gravity : An airplane dropped a flare from a height of 1024 feet above a lake. Use the formula to find how many seconds it took for the flare to reach the water.
In the following exercises, solve. Round approximations to one decimal place.
Landscaping Reed wants to
have a square garden plot in his
backyard. He has enough
compost to cover an area of 75
square feet. Use the formula
to find the length of each
side of his garden. Round your
answer to the nearest tenth of a
foot.
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