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3 years ago

11

PLEASE HELP! I need help on geometry problem plz!

1 answer:

cricket20 [7]3 years ago

8 0

Hello,

For this problem, we will use cosine which is adjacent over hypotenuse. They want you to solve for the hypotenuse.

cos(56.76) = 56.76/x (multiply both sides by x)
x cos(56.76) = 56.76 (divide both sides by cos(56.76))
x = 103.548816..
x = 103.5

Your final answer approximately x = 103.5.

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Jeremiah paid $29.52 for a pair of boots thatwere on sale. The original price of the boots was$36.00. Enter the percentage disco

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Remark

The key to this question is to get the original price (36) down to 29.52. In other words, what % will when multiplied by 36 will result in 29.52?

Solution

36 * (x/100) = 29.52 Multiply both sides by 100

36 * x = 29.52 * 100 The 100 on the left disappears.

36 * x = 2952 The decimal disappears. Divide by 36

x = 2952/36

x = 82%

That is not your answer. That just tells you what % of 36 is that would give 29.52

Answer

The % discount is 100 - 82 = 18%. That is the % discount.

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4. Determine whether f(x) = 1/3x + 5 and g(x) = 3x - 15 are inverse functions.

Ierofanga [76]

Answer:

YES! we conclude that f(x) = 1/3x + 5 and g(x) = 3x - 15 are inverse functions.

Step-by-step explanation:

Given

Given that the function f(x) and g(x) are inverse functions.

$f\left(x\right)\:=\:\frac{1}{3}x\:+\:5$

$g(x) = 3x - 15$

To determine

Let us determine whether f(x) = 1/3x + 5 and g(x) = 3x - 15 are inverse functions.

<u>Determining the inverse function of f(x) </u>

A function g is the inverse function of f if for y = f(x), x = g(y)

$y=\frac{1}{3}x+5$

Replace x with y

$x=\frac{1}{3}y+5$

Solve for y

$y=3x-15$

Therefore,

YES! we conclude that f(x) = 1/3x + 5 and g(x) = 3x - 15 are inverse functions.

4 0

3 years ago