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topjm [15]
4 years ago
5

Tom want to reach a second layer floor window on a house that is 20 feet above ground, if he must put the ladder at 70 degree an

gle to the ground, how long must the ladder be?
Mathematics
1 answer:
Damm [24]4 years ago
8 0
It must be 21.3 feet.

The sides of the triangle given to us are the side opposite the angle to the ground, 20, and the missing side is the hypotenuse.  

opposite/hypotenuse is the ratio for sine:

sin 70 = 20/x

Multiply by x:
x sin 70 = 20

Divide both sides by sin 70:
(x sin 70)/(sin 70) = 20/(sin 70)
x = 21.283 ≈ 21.3
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DanielleElmas [232]

Answer:

Congruent Area

Step-by-step explanation:

Since the they are congruent then the are will be the same. this is marked hash marks on the side of the rectangle as shown || or |.

4 0
3 years ago
A recipe requires 2 1/3 cups of flour. the chef needs to increase the recipe by a factor of 4. how many cups of flour does the c
Leona [35]
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3 0
4 years ago
If F(x)=9x which of the following is the inverse of F(x)
user100 [1]

Answer:

Inverse of F(x)=9x = 1/9x

Step-by-step explanation:

If F(x)=9x

which of the following is the inverse of F(x)

When talking about inverse of a function, we are talking about reversal. Therefore, an inverse function is the inverse of another function. In order to get the inverse of a particular function, we reverse the denominator to become the numerator and the numerator to become the denominator.

So for the function,

F(x)=9x, the numerator is 9x and the denominator is 1

Reversing the numerator and denominator, .

Inverse of F(x)=9x = 1/9x

8 0
3 years ago
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How would you scale down by a factor of 1/10?
slavikrds [6]

Answer:

See example below.

Step-by-step explanation:

To scale down by a factor of 1/10, multiply the side length or distance by 1/10.

Example:

If the distance was 5 then 5*1/10 = 5/10 = 1/2 is the scaled down version.

6 0
3 years ago
Which data collections show bias? Check all that apply.
V125BC [204]

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An insurance company polls drivers of sports cars to find their average number of tickets.

Step-by-step explanation:

It’s bias because they’re only polling people with sports cars

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