Equation: 6x=3x+72
So 3x=72
x=24

$\angle GFH=\angle FBD=\angle ABC=144$
If i remember correctly i think you just cross multiply <span />
Answer:
x = 4.25
Step-by-step explanation:
First, alter the equation until both exponents have the same base. We know that 9^3 is 27. Therefore, we can change 27^(x-3) into 9^3(x-3).
Now, the equation can be written as 9^(8-x) = 9^(3x-9)
Now that the bases are the same, we can cancel them out and just solve for the exponents. This will look like:
8-x = 3x-9.
8 = 4x - 9
17 = 4x
x = 4.25
10(4^2-(9)
Since 16-9 is 7
And 10 times 7 is 70