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3 years ago

6

Jason is 6 feet tall, and at 6 pm, his shadow was 15 feet long. At the same time, a tree next to Jason had a 25-foot shadow. Wha

t is the height, in feet, of the tree?

1 answer:

IRISSAK [1]3 years ago

3 0

Answer:

10

Step-by-step explanation:

set up a ratio problem

6 feet/15 long shad= x/25 shad

15x = 150

x = 10

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Answer:

$b=h=\sqrt{6}$ m

Step-by-step explanation:

Let

Bas length of box=b

Height of box=h

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$\implies 18-3b^2=0$

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$b=\pm \sqrt{6}$

$b=\sqrt{6}$

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Again differentiate w.r.t b

$\frac{d^2V}{db^2}=-3b$

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$\frac{d^2V}{db^2}=-3\sqrt{6}$

Hence, the volume of box is maximum at $b=\sqrt{6}$ .

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3 years ago