3 years ago

What is the answer to this

Mathematics

1 answer:

MrMuchimi3 years ago

5 0

Answer:

Step-by-step explanation:

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A man of height 1.2 meters walk away from a 5-meter lamppost at a speed of 2.8 m/s. Find the rate at which his shadow is increas

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Let d be initial distance the man is from the lamp.
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Now set up a proportion between 2 triangles.
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Small one formed by end of shadow and top/bottom of man.

$\frac{d+2.8t+x(t)}{x(t)} = \frac{5}{1.2} \\ \\ x(t) = 0.88t +0.32 d$

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3 years ago

Given ƒ(x) = x + 10, find ƒ(x + 1).

MissTica

<h3>Answer: f(x+1) = x+11</h3>

Work Shown:

f(x) = x + 10

f(x+1) = x+1 + 10 .... replace every x with x+1

f(x+1) = x + 11

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