Answer:
Solution given:
Increase percentage=
%
=4%
<u>the percentage </u><u>increase</u><u> </u><u>is</u><u> </u><u>4</u><u>%</u><u>.</u>
Standard form: 2x - 16 = 0
Factorization: 2(x - 8) = 0
Solutions: x = 16/2 = 8
Hope this helps!
I really don't know how toowrk it out on paper, I'm afraid. I just looked at it, and somehow knew that the answers are 7 and 9.
Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ±
= ±
= ± 2