1. If x + 13 = 5, then the value of x is
(a) 18
(b)-18
(c)-8
(d) 8

C

Step-by-step explanation:

The best way to find x is to plug in all the answer choices and see if they equal 5

lets start with A

18+13=5

31=5 which is incorrect

Let do B

-18+13=5

-5=5 which is incorrect

Lets do C

-8+13=5

5=5 which is correct!

Lets do D

8+13=5

21=5 which is incorrect

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The answer is (C) -8

Step-by-step explanation

x = -8

-8 + 13 = 5

It is basically like subtraction..

You subtract the 13 from the 8 even though its backwards.

-8 + 13 = 5

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

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step-by-step explanation: