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Nikolay [14]
4 years ago
10

Which expression is equal to 3/√7? A. 3√7/7 B. 3√7/49 C.7/3√7 D.21/√7

Mathematics
1 answer:
Lostsunrise [7]4 years ago
7 0

Answer:

3√7

------- (Answer A).

   7

Step-by-step explanation:

The expression 3/√7 has a radical in the denominator.  Most times when you're asked to simplify such an expression, you're actually being asked to rationalize the denominator:  remove the √ sign from the denominator.

Given 3/√7, the first thing we need to do is the multiply both numerator and denominator by √7.

This results in:

3√7

------- (Answer A).

   7

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