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alisha [4.7K]
3 years ago
8

What number can you multiply by √7 to get a rational number? (select each correct answer.)

Mathematics
2 answers:
PolarNik [594]3 years ago
5 0
Answers: Choice A, choice B, and choice C

Those two values, when multiplied by the given value, will lead to a rational number. If you pick choice A, then you get 7 as a result after multiplying. If you choose choice B, then you get -7

Note that
7 = 7/1
-7 = -7/1
So 7 and -7 are rational

Also, when multiplying 0 by any number, the result is always 0. The rule is 0*x = x*0 = 0
The value 0 is rational as 0 = 0/1

The only non-answer is choice D as 7*sqrt(7) can't be expressed as a ratio of two whole numbers.
gulaghasi [49]3 years ago
4 0
<span>A) √7 is the only option.</span>
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