When you ask "What number is halfway between 84 and 174?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=174.
To find the number halfway between 84 and 174, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 174 into our formula, we get:
(84 + 174)/2 = 129
Thus, the number halfway between 84 and 174 is 129.
To check that our answer is correct, we subtract 84 from 129 and subtract 129 from 174 and compare the two numbers:
129 - 84 = 45
174 - 129 = 45
As you can see, the halfway number is 45 higher than 84 and 45 lower than 174. Therefore, our halfway between answer of 129 above is correct.
Halfway Between
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Halfway Between 84 and 175
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