Answer:
a: 12
b: as much as what?
c: 70
d: 10 times as much
Step-by-step explanation:
a: 4 * 3 = 12
c: 700 / 10 = 70
d: 800 * 10 = 8000
-4w + 8v + 2y = -4w + 8v + 2y
The answer for number 7 is x=3
X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9