Area = 1/2 b * h
h = b - 9
b = b
Area = 56cm^2
Area = 1/2 (b - 9) * b
56 = 1/2 (b^2 -9b)
112 = b^2 - 9b
b^2 - 9b - 112 = 0
b = 16 and therefore the height is
h = 26 - 9 = 7
Check
Area = 1/2 * 16 * 7
Area = 8 *7
Area = 56 which checks.
He needs to buy 4.5 packages of footballs because 4 is equal to 16 and half of four is 2 add them together you get 18
Divide 93.75 by 125 = 75%
however, that is not the discount.
it is the difference of the 100 and the discount.
to find the discount, you do 100 - 75 = 25
the discount is 25%
Answer:
75 divided by 15 is 7
Step-by-step explanation:
(3x+20)+(8x-16)=180
Combine like terms:
11x+4=180
Then solve
11x=176
X=16
