SOLUTION: PLEASE PLEASE PLEASE can someone explain to me in easier terms how the figure 1389 is reached I cant understand how this figure is reached at all. 63.5 + 61 = 124.5 124.53/2

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: PLEASE PLEASE PLEASE can someone explain to me in easier terms how the figure 1389 is reached I cant understand how this figure is reached at all. 63.5 + 61 = 124.5 124.53/2      Log On

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Question 272222: PLEASE PLEASE PLEASE can someone explain to me in easier terms how the figure 1389 is reached I cant understand how this figure is reached at all.
63.5 + 61 = 124.5
124.53/2 = 1389.16
124.52 will be 124.5x 124.5 but in this instance instead of the power of 2 it is the power of 3/2 a fraction which is in fact 1 1/2 (1.5).



Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
63.5 + 61 = 124.5
124.53/2 = 1389.16
124.52 will be 124.5x 124.5 but in this instance instead of the power of 2 it is the power of 3/2 a fraction which is in fact 1 1/2 (1.5).
:
124.5^(3/2); the exponent is 3%2F2%29
What this means is you cube 124.5 which is 124.5^3 = 129781.125,
and then you find the the square root of that, sqrt%28129781.125%29 = 1389.16
:
But you can also write the square root as an exponent ^(1/2) also means square
root. If you cube a number then find the square root, the exponent would be ^(3/2)
just like you had.
:
you can do this easily on a good calc. Enter; 124.5^(3/2); results will be 1389.165622
:
Hopefully this has cleared things up for you.
Questions? ankor@att.net is my email address,