Question

Please help me with this quickly and explain your answer

Answer 1

D. x = 10

Explanation:

Perimeter = the sum of all sides lengths

Perimeter = 30 (in this case)

so...

`((x-5)+x)2=30`

Step 1. Dividing 3 to both sides

`((x-5)+x)=15`

Step 2. Add 5 to both sides

`x+x=20`

Step 3. Solve for x

Since x + x = 20, to solve for one of the x means solving for the other x

so since 2 x's are being added with the same value, divide 20 by 2.

x = 10