When you ask "What number is halfway between 8 and 173?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=173.
To find the number halfway between 8 and 173, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 173 into our formula, we get:
(8 + 173)/2 = 90.5
Thus, the number halfway between 8 and 173 is 90.5.
To check that our answer is correct, we subtract 8 from 90.5 and subtract 90.5 from 173 and compare the two numbers:
90.5 - 8 = 82.5
173 - 90.5 = 82.5
As you can see, the halfway number is 82.5 higher than 8 and 82.5 lower than 173. Therefore, our halfway between answer of 90.5 above is correct.
Halfway Between
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Halfway Between 8 and 174
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