A mirror should be centered on a wall. The mirror is 4 feet wide and the wall is 20 feet wide. Which equation helps determine the distance x on each side of the mirror?
A. x + 4 + x = 20
B. 4 + x + 4 = 20
C. x = 20 + 4 + 4
D. 4 = 20 + x + x

Hi!

The correct answer is A.

The mirror is 4 feet wide.

The wall is 20 feet wide.

The distance x on each side of the mirror: x + x

4 feet wide + x + x = 20 feet wide

The mirror 4 feet wide + the distance x on each side of the mirror = the wall is 20 feet wide

==> Sorry, my English is bad, I'm trying to learn this language.

Wish Good Lessons! ^-^

the answer is 0.3175 hope that you ^w^

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