7x^2-7=0 solve each equation by factoring
2 answers:
7x^2 - 7 = 0
7(x^2 - 1) = 0
7(x + 1)(x - 1) = 0
x = 1; x = -1
(1,0) (-1,0)
or if you prefer this format: x= 1,-1
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Answer:
c = ax + b
Step-by-step explanation:
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Answer:
It is 7.5%.
Step-by-step explanation:
15 x
200 100
1500/200 = 7.5
Answer: 225
Step-by-step explanation:
225x0.04 is 9

⇛-7.5(x−3) = 3.75
⇛-7.5x + 22.5 = 3.75
⇛-7.5x = 3.75 - 22.5
⇛-7.5x = -18.75
⇛x = -18.75 ÷ -7.5
⇛x = -18.75/-7.5
⇛x = 2.5
76÷2 = 38. 38 es la solución.