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- anonymous

find three arithmetic means between - 2 and 12
would it be 8 10 12

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- anonymous

find three arithmetic means between - 2 and 12
would it be 8 10 12

- jamiebookeater

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- anonymous

12 = -2 + 4d
14 = 4d
3.5 = d
-2 + 3.5 = 1.5
1.5 + 3.5 = 5
5 + 3.5 = 8.5
1.5, 5, and 8.5 are the three arithmetic means.

- anonymous

Do you understand?

- anonymous

im a little confused

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- anonymous

Where are you confused?

- anonymous

how did you do it like i get how you added them
im sorry i really dont know this tuff

- anonymous

It's okay so to find the three arithmetic means, you need to subtract the two numbers. 12 - (-2) = 14
and then divide the difference by how many means you want plus one, since it is three, you need to divide it by four; 14/4
then add this factor to your lower limit
-2 + 14/4
-8/4 + 14/4 (getting the lcd)
= 6/4 or 3/2 (first arithmetic mean)
for your second arithmetic mean, just add the factor to your first arithmetic mean
6/4 + 14/4 = 20/4 or 5 (second arithmetic mean)
20/4 + 14/4 = 34/4 or 17/2 (third arithmetic mean)
to check if you were able to got the right answers, add the factor to your last arithmetic and the sum should be your upper boundary.
34/4 + 14/4 = 48/4 or 12

- anonymous

Hope that helps!

- anonymous

thank you so much that really helps
thanks for such a helpful answer
i really really appreciate it :)

- anonymous

welcome!

- anonymous

:D

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