
times both sides by 2x
x(x+2)=2(4)
x²+2x=8
minus 8 both sides
x²+2x-8=0
factor
what 2 numbers multiply to -8 and add to 2
-2 and 4
(x-2)(x+4)=0
set to zero
x-2=0
x=2
x+4=0
x=-4
x=-4 and 2
35
this is the correct answer if you're on usatestprep
Answer: 53.1%
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Explanation:
The change from 76.1 to 116.5 is 40.4
This means that 40.4 more million people voted in the second year compared to the first
Divide this difference (40.4 million) over the original amount (76.1 million) to get
40.4/76.1 = 0.53088 which converts to 53.088% and that rounds to 53.1%
Answer:
-6c + 7
Step-by-step explanation:
To simplify this expression, you must add like terms. Because 3c and -9c both have the same variable (c), they are like terms.
3c + (-9c) = -6c
The 7 stays the same, so the simplified expression is -6c + 7.
Hope this helped :)