SOLUTION: Equation for 10 numbers have a mean of eight.
Next add another number and the mean becomes 9, no guess and check just need an algebra equation for this..thanks
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Next add another number and the mean becomes 9, no guess and check just need an algebra equation for this..thanks
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Question 855406: Equation for 10 numbers have a mean of eight.
Next add another number and the mean becomes 9, no guess and check just need an algebra equation for this..thanks Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Equation for 10 numbers have a mean of eight.
10a = 80
Next add another number and the mean becomes 9 = 9
10a + b = 99
replace 10a with 80
80 + b = 99
b = 99-80
b = 19 is the other number
