Answer:
10-8
Step-by-step explanation:
If the perimeter equals 30 and the length is twice the width, then the length is equal to 20 and the width is equal to 10.
We can use quadratic formula to determine the roots of the given quadratic equation.
The quadratic formula is:

b = coefficient of x term = 4
a = coefficient of squared term = 1
c = constant term = 7
Using the values, we get:
So, the correct answer to this question is option A
Just around the 15 and 3. So it would be
(15-3)x4+9=57
This is because (15-3)= 12
12x4=48
48+9= 57
Answer:
A,B, C
Step-by-step explanation:
hope it helps