Answer:
a=-0.5
Step-by-step explanation:
Distributive property for left side, difference of squares for right side.
8a-9a^2=-40+36-9a^2
-9a^2 cancels out
8a=-4
a=-0.5
The answer is true.
Really all you ever need is two points and you should find an equation.
Answer:
Width: 7 Length: 10
Step-by-step explanation:
Width: x
length: 2x-4
Area: 70 meters squared
(2x-4)x=70
2x^2-4x=70
2x^2-4x-70=0
2(x^2-2x-35)=0
(x-7)(x+5)=0
x cannot be negative so x=7
Answer: the answer is 129
Step-by-step explanation: 180 subtract by 51 and it will give u 129
lmk if you're looking for point slope form but it's y = 2/5x - 3
