39=9x+7-3x+20
Subtract 27 from each side
12=6x
2=x
Now plug in 2 for x to find AB and BC
9x+7= AB
9(2)+7=AB
18+7= AB
25= AB
-3x+20= BC
-3(2)+20= BC
-6+20= BC
14= BC
Answer:
no
Step-by-step explanation:
y=mx+b
applied to the information given:
3y=x+6,
divide both sides by 3
y=1/3x+2
slope is 1/3
Theres common denomintor is 12 so it would be 10/12 and 9/12
Last one:
f(x)= (1+r)^x, then find r=0.07-1=-0.93,
negative---> decay, and then 0.93==93%
The equivalent expression of (x+4)² is x²+4x+16.
<h3>What is an expression?</h3>
Expression in mathematics is combination of variables with the use of operations and given rules. It can be in the form of equation, numbers etc.
The given expression is (x+4)².
Simplifying the expression;
(x+4)²
= (x+4) (x+4)
= x²+4x+16
Therefore, the equivalent expression of (x+4)² is x²+4x+16.
To learn more about the expression;
brainly.com/question/24242989
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