Question

The arithmetic mean between √5 and 3√5 is

Answer 1

SOLUTION

TO DETERMINE

The arithmetic mean between √5 and 3√5

EVALUATION

We know that for given two numbers a and b , the arithmetic mean between a and b is

$\sf = \dfrac{a + b}{2}$

Here the given numbers are √5 and 3√5

Hence the required arithmetic mean between √5 and 3√5

$\sf = \dfrac{ \sqrt{5} + 3 \sqrt{5} }{2}$

$\sf = \dfrac{ 4 \sqrt{5} }{2}$

$\sf = 2 \sqrt{5}$

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