Answer:
The formula is

Step-by-step explanation:
hope this helps
Answer:
Option B
Step-by-step explanation:
Given quadratic equation is,
12a² + 9a + 7 = 0
By comparing this equation with standard quadratic equation,
hx² + kx + c = 0
h = 12, k = 9 and c = 7
By using quadratic formula,
a = 
= 
= 
= 
= 
a = 
Therefore, Option B will be the correct option.
Answer:
A=a+b
2h
Step-by-step explanation:
Just type in the sides you will get the answer, hope it helps
20 minutes because 9/9 is simplified to 1 as 5/5 is simplified to 1
area = L x W
area = 7.5 x 5.3 = 39.75 square feet of foam