A 15 foot ladder is placed against a wall.Suppose the bottom of the ladder slides away from the wall at a constant rate
A 15 foot ladder is placed against a wall.Suppose the bottom of the ladder slides away from the wall at a constant rate of 3 ft.How fast is the top of the ladder sliding down the wall when the bottom is 9 feet from the wall?
Answer
a.- 9/4 ft b.9/4 ft c.-4/9 ft d.None of these
Answer
a.- 9/4 ft b.9/4 ft c.-4/9 ft d.None of these
英語人氣：209 ℃時間：2020-03-28 19:38:38
優(yōu)質(zhì)解答
b
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