The answer is:
3
w^2 - 1 = w + 5
3^2 - 1 = w + 5
3^2 = 3(3) = 9
9-1 = 8
8 = 3 + 5
8 = 8
Answer:
A=1/2b×h
28.8=1/2b×7.2
28.8=3.6b/ ÷3.6
<em><u>b</u></em><em><u>=</u></em><em><u>8</u></em>
x =