Question

Each question is follewed by four choices for an answer. Read each question and then decide for the best answer. Provide complete Solution for each item.

1. If three arithmetic means are inserted between — 15 and 9, What is the first of the arithmetic.

A. 3
B. - 3
C. - 9
D. 6​

Answer 1

Answer:

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Step-by-step explanation:

Answer:

-9

Step-by-step explanation:

As given in the question, there are 3 arithmetic means between -15 and 9.

-15, __ , __ , __ , 9

By adding the first and last term, we get the middle arithmetic mean which is as follows:

(-15 + 9)/2 = -3

Hence we got the middle term: -15, __ , -3, __, 9

And now by adding the first and third term we will get the first arithmetic mean; as follows:

{-15 + (-3) }/2 = -18/2 = -9

Therefore the first arithmetic mean is "-9"

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Answer 2

Answer:

Answer:

-9

Step-by-step explanation:

As given in the question, there are 3 arithmetic means between -15 and 9.

-15, __ , __ , __ , 9

By adding the first and last term, we get the middle arithmetic mean which is as follows:

(-15 + 9)/2 = -3

Hence we got the middle term: -15, __ , -3, __, 9

And now by adding the first and third term we will get the first arithmetic mean; as follows:

{-15 + (-3) }/2 = -18/2 = -9

Therefore the first arithmetic mean is "-9"

hiii...