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3 years ago

10

1/4(8b-80)+b=70 find b

1 answer:

zlopas [31]3 years ago

4 0

2b - 20 + b = 70
3b = 90
b = 30

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2 years ago

A 20 ft. ladder is used against a 15 ft. wall. What is the measure of the angle made by the ladder and the ground (nearest whole

Brrunno [24]

Step-by-step explanation:

Given that,

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2 years ago

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Step-by-step explanation:

<u>This is a right triangle as shown by the right angle.</u>

The side opposite the right angle is the hypotenuse, which is 9.
The side opposite angle A is 3.

So we have the opposite of A and the hypotenuse.

The trigonometric ratio that relates opposite side to hypotenuse is SINE.

$sin\theta=\frac{opposite}{hypotenuse}$

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<em>To solve for the angle, we use our calculator and find the inverse sin of $\frac{1}{3}$ :</em>

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B is the right choice.

6 0

3 years ago