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Chapter 9: Q. 9.75 (page 1059)
Simplify:
The solution is
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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.
A helicopter dropped a rescue package from a height of feet. Use the formula role="math" localid="1647883430342" to find how many seconds it took for the package to reach the ground.
Accident investigation: The skid marks for a car involved in an accident measured 54 feet. Use the formula to find the speed of the car before the brakes were applied. Round your answer to the nearest tenth.
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.
In the following exercises, simplify.
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