Answer:
Step 3 they took the square root incorrectly
Step-by-step explanation:
5 ( x-2)^2 +6 = 86
Subtract 6 from each side
5 ( x-2)^2 +6 -6= 86-6
5 ( x-2)^2 = 80
Divide each side by 5
5 ( x-2)^2 /5 = 80/5
(x-2)^2 = 16
Take the square root of each side
sqrt((x-2)^2) = ±sqrt(16)
x-2 = ±4
Answer:
Step-by-step explanation:
c(t)=40:0≤t≤400
=40+0.50 (t-400):t≥400
Since 5x is equal to y.we can write 5x instead of y in the equation.and then solve the equation
Answer:
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Step-by-step explanation:
The given function is
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To find g(n-7), we substitute x=n-7 to obtain;

Expand the parenthesis to obtain;
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Simplify:
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