Area of triangle=1/2(base×height)
360=1/2((4x-2)(7x+5))
720=(4x-2)(7x+5)
FOIL the binomial
720=28x^2+6x-10
Bring 720 to the other side
28x^2+6x-10-720=0
28x^2+6x-730=0
Factor 2 out
2(14x^2+3x-365)=0
Factor 2(14x+73)(x-5)=0
x-5=0
x=5
It can't be 14x-73=0 because the length can't be negative.
You're welcome.
Credit. That's why the stock market crash was so terrible in 1929.
Answer:
C
Step-by-step explanation:
The answers to the questions
Answer:
8.5 in
Step-by-step explanation:
Area = Length × Width
153 = L × 18
L = 153÷18
L= 8.5
L= 8.5 in
