Question

Please help me with this quickly and explain your answer

Answer 1

Answer:

D. x = 10

Step-by-step 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