What algebraic expression is equivalent to this expression? 9(2x+6) - 18
2 answers:
Answer:
18x+36
Step-by-step explanation:
We are given the expression:
We want to simplify the expression. First, let's distribute the 9. Multiply each term inside the parentheses by 9.
Combine like terms. There are 2 constants (terms without variables): 54 and -18. We can add them together.
The expression 9(2x+6)-18 is equivalent to 18x+36
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Answer:
radius = 5 in
Step-by-step explanation:
Using the formula for calculating the area (A) of a circle
A = πr² ( r is the radius )
here A = 78.5, hence
3.14r² = 78.5 ( divide both sides by 3.14 )
r² = = 25 ( take the square root of both sides )
r = = 5