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kaheart [24]
3 years ago
9

If 3x−y=12, what is the value of 8x2y?

Mathematics
2 answers:
ArbitrLikvidat [17]3 years ago
7 0

One approach is to express

8x2y

so that the numerator and denominator are expressed with the same base. Since 2 and 8 are both powers of 2, substituting 23 for 8 in the numerator of 8x2y gives

(23)x2y

which can be rewritten

23x2y

Since the numerator and denominator of have a common base, this expression can be rewritten as 2(3x−y). In the question, it states that 3x−y=12, so one can substitute 12 for the exponent, 3x−y, which means that

8x2y=212

The final answer is A.

garik1379 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

The answer is A.

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The solution is the set of values that respect all conditions of the system.

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