A=base*height*1/2 OR A=base*height/2
A=8*7/2
A=28
12 square + 16 squared = c squared
144 + 256= c squared
400= c squared
C = 20
-27 can be rewritten as -3 * -3 * -3
So the 3rd root of -27 is -3.
(You can check on the calculator to make sure as well)
Answer:

Step-by-step explanation:
Given
f(x) = 
To evaluate f(a + 2) substitute x = a + 2 into f(x), that is
f(a + 2) =
= 
The answer is the second one. [ Step 1 : 27x - 18 = 1 Step 2 : 27x = 19 ]