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Harmonic Mean

If hx = 3x ...

Question

If $h (x) = 3 x + 5$ and $h (a) = 27$ , then what is the value of a?

A

22 / 3

or

7.33

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B

22

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C

3

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D

6

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Solution

The correct option is A $22 / 3$ or $7.33$
h(a)=3a+5=27
so 3a=27-5=22
so a=22/3=7.33

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