Let's start by moving all like terms to their own sides:
-18 = -3x + 6
3x = 6 + 18
3x = 24
x = 8
Answer:
60%
Because the reaming percent has to add up to 100. 60 plus 40 is 100
Just use your right angled triangle formula.
A=

Plug n chug
A=

A=71.5
Answer:
7 + 4
Step-by-step explanation:
note that
×
= a
Given
(2 +
)² = (2 +
)(2 +
)
Each term in the second factor is multiplied by each term in the first factor, that is
2(2 +
) +
(2 +
) ← distribute both parenthesis
= 4 + 2
+ 2
+ 3 ← collect like terms
= 7 + 4