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ratelena [41]
1 year ago
13

Zeina anwered 8 out of 20 quetion correct in her math exam. What wa her grade percent?

Mathematics
1 answer:
11Alexandr11 [23.1K]1 year ago
4 0
(8/20) x 5

40/100 = 40%
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saw5 [17]

Answer:

Step-by-step explanation:

Hello,

First of all we will take any real number x different from 0, -2, +2 as dividing by 0 is not allowed and then we can write

\dfrac{( - x - 2)}{x(x^2 - 4)}=-\dfrac{x+2}{x(x-2)(x+2)}=\large \boxed{ -\dfrac{1}{x(x-2)}}

because we know that

x^2-4=x^2-2^2=(x-2)(x+2)

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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3 years ago
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