3 years ago

A 10 meter ladder is leaned up against a building. If

Mathematics

1 answer:

kirill115 [55]3 years ago

5 0

Answer:

8.7

Step-by-step explanation:

Use trigonometry. The ladder and the building form a right triangle with the ground. You are given the length of the hypotenuse and the base angle. You use sine since we are trying to figure out the opposite side from the angle and we have the hypotenuse length. Sin = opposite/hypotenuse. So in this case, sin 60°= x/10. We solve for x by multiplying both sides by 10. Now x= sin 60° (10) = (0.8660)(10) = 8.7 m.

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I need help with 25 and 26 plzz

Paha777 [63]

Answer:

Step-by-step explanation:

25.

Combine like terms.

4t+7=-33

subtract 7 from both sides

4t=-40

divide both sides by 4

t=-10

26.

Subtract 2a from both sides

5=7a-16

add 16 to both sides

21=7a

divideby 7 on both sides

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I'd suggest getting the app photomath or using cymath to help you with these problems. they give you the answer and how to get it step by step

8 0

3 years ago

For the function y = f(x) = 3x -5<br> What is the y intersection

Jobisdone [24]

Answer:

The y-intercept is -5.

Step-by-step explanation:

In algebra, "y=" and "f(x)=" is basically the same thing. You don't have to write them both. Also, $y=3x-5$ is in slope-intercept form, which is: $y=mx+b$ , where $b$ is the y-intercept. That means "-5" is the y-intercept.