Answer:
9 OR 1
Step-by-step explanation:
Let the number be x
x² - 10x = -9
x² - 10x + 9=0
a=1
b=-10
c=9
Solve using the quadratic formula
x =9 or 1
L = 2w + 6
p = 144
144 = 2w + 2(2w + 6)
144 = 2w + 4w + 12
132 = 6w
w = 22
l = 2(22) + 6
l = 50
The length is 50 feet and the width is 22 feet.
The answer to this question is:
6080 3/8
Answer: So our equation is 
Laura does:

while Sean does:

So sean sums four times the number 2/3, while Laura sums two times the number 4/3, this is because we are working with a multiplication, and the order of the factors does not alter the product.
The two are splitting the equations in different ways.
Here, angle (3x-1) is supplementary with 5x, so their sum would be equal to 180
3x - 1 + 5x = 180
8x = 180 + 1
x = 181/8
x = 22.625
Hope this helps!