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3 years ago

Help me!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Leokris [45]3 years ago

7 0

Answer:

D. 25x² - 20x + 4

Step-by-step explanation:

The formula for the area of a square is: A = s², where s = a side length of the square since all side lengths of a square are equal. In this case, the side length is represented by '5x', so the original area is A = (5x)² = 25x².

Since Kelly is cutting off one inch from each side of square, this will actually take off 2 total inches from each side, making the new side length '5x - 2'. We can now put this expression in for the values of 's' in our formula for area and use distributive property to solve:

A = (5x - 2)² = (5x - 2)(5x - 2)

Distribute using FOIL: 25x² - 10x - 10x +4 or 25x² - 20x + 4

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Which of the following is a solution of x2 + 2x + 4?

ivolga24 [154]

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3 years ago

The measure of anglerst can be represented by the expression (6x 12)°. three lines extend from point s. the space between lines

miv72 [106K]

Answer:

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Step-by-step explanation:

We assume the positions of the lines and angles will match the attached figure. The angle addition theorem gives a relation that can be solved for x, then for the value of angle RST.

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The measure of angle RST is 120 degrees.

_____

<em>Additional comment</em>

Note that we don't actually need to know the value of x (18) in this problem. We only need to know the value of 6x.

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2 years ago

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2 years ago

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3 years ago

Pleaseeee help meeeeeee

Maslowich

That my dear your answer would be 16 degrees hope this helped

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3 years ago