Step-by-step explanation:
A = 1/2h(b1 + b2)
2A = h(b1 + b2)
h(b1 + b2) = 2A
h = 2A/(b1 + b2)
H= (2pier^2)/ 2pier all subtracted by s so the last equation from the picture.
Hope it helps!
Answer:
He spent $110.00 on both originally
Step-by-step explanation:
Add both prices too get 165
Then use the equation 
= 
cross multiply to get 150x=16500
Divide 16500 by 150 to get x alone
x= 110
Answer:
x = 704/39 ( <----Fraction)
Step-by-step explanation:
28 squared minus 39x minus 80 equals 0
784-39x-80=0 evaluate the power
704-39x=0 Subtract the numbers
-39x=-704 move the constant to the right hand side and change it's sign
Divide on both side to get x = 704/39
