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Ivenika [448]
3 years ago
11

I’m having problems with these type of problems

Mathematics
1 answer:
castortr0y [4]3 years ago
4 0

Answer: x=-5 or x=2

Step-by-step explanation:

x^2+3x-10=0

x^2+5x-2x-10=0

x(x+5)-2(x+5)=0

(x+5)(x-2)=0

x+5=0 or x-2=0

x=-5 or x=2

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15 is what percent of 20
Lera25 [3.4K]
100%/x%=20/15
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100/1.33333333333=x
75=x
x=75

15 is 75% of 20

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3 years ago
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Svetllana [295]

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I think this is right :)

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