Answer:
-3.5 or -6
Step-by-step explanation:
2x^2+19x+40=-2
2x^2+19x+40+2=0
2x^2+19x+42=0
2x^2+(12+7)x+42=0
2x^2+12x+7x+42=0
2x(x+6)+7(x+6)=0
(x+6)(2x+7)=0
either,
x+6=0
x=-6
or,
2x+7=0
2x=-7
x=-7/2
x=-3.5
I hope this helps!
Check attachment.
I graphed it.
The formula for the vertex of the parabola is -b/a. Plugging this in we get -(-4)/1 or 4.
C 30600 dollars hope it helps
area of a circle
A = pi x r^2
r=9
