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geniusboy [140]
3 years ago
9

2. The difference of twice a number and 8 is 12.​

Mathematics
1 answer:
zzz [600]3 years ago
6 0

Step-by-step explanation:

Let x be the number. If the question is 2x-8, the answer is 10. If the question is 8-2x, the answer is -2. The answer is probably 10, though. The larger number is usually given first.

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Select the rational expression that is equivalent to the given expression below. 4/x-3
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To find the correct option we need to calculate each of the given options.
Option (1):
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Option (2):
\frac{x+2}{x-3} *  \frac{4}{x+2} =  \frac{4}{x-3}

Option (3):
\frac{x+2}{x-3} - \frac{4}{x+2} = \frac{(x+2)^2-4(x-3)}{(x-3)(x+2)}

option (4)
\frac{x+2}{x-3} + \frac{4}{x+2} = \frac{(x+2)^2+4(x-3)}{(x-3)(x+2)}


So, the correct answer is option (2)
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3 years ago
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Answer:

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Step-by-step explanation:

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