the mean of 8 numbers is 17, what is the sum of the numbers?
could you write step by step how to solve this problem because this is the one i have that i don't understand how to solve.
thanks
2007-02-05 11:44:39 · 2 answers · asked by wherevertheanswerlies 3 in Science & Mathematics ➔ Mathematics
To demonstrate the addition of 8 numbers and finding their mean (or average):
(x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8) / 8 = 17
To find the sum of the numbers, notice that we have the sum right there; all we need to do is get rid of that pesky 8 in the denominator. This can be done by multiply both sides by 8.
(x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8) = 17(8)
x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 = 136
2007-02-05 11:48:42 · answer #1 · answered by Puggy 7 · 2⤊ 0⤋
hi, what u have to do:
Don't think it is complicated at all
Let the sum of eight numbers be x
Therefore x divided by 8 should give 17
So x shall be 17 times 8 which is 136
Isn;t it easy.
Just remember you can do it.
2007-02-05 20:10:24 · answer #2 · answered by NIHARIKA M 2 · 0⤊ 0⤋