Answer: The 3rd equation is a true proportion
Brainliest please! <3
Answer:
15 inches
Step-by-step explanation:
x+5+2x-3+7x+1=103
10x+3=103
10x=100
x=10
Answer:
The coefficient of x is 8
Step-by-step explanation:
Given
--- Perimeter
Required
Determine the coefficient of x

Open bracket

Collect like terms


<em>The coefficient of x is 8</em>
9c + 8 - 2c + -4
like terms
9c - 2c +8 +-4
7c + 4
(x+2) is the answer.
you distribute (x+2)^2 then cancel out 'likes', which leaves you with (x+2)