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what is the average of n numbers?

i dk am i dupposed to know or is it in the question

you are supposed to know.

in other words, what is my average profit per month?

750

okay, good. how did you figure that out?

doing good sugar haha (:

i added 1000 and 500 and divided by 2 to get the average

700

very good. what did you do to get that answer?

i added all three and divided it by three

would it be x+y divided by 2

exactly! very good!

so your expression is average = (x+y)/2

if you had 10 numbers, then your average would be
(a+b+c+d+e+f+g+h+i+j)/10

where a,b,c... are the 10 numbers

ok and can u tell me how do i write the recipocal of the average

ok i got it its 2/(x+y)

okay very good!

what is the reciprocal of x?
what is the reciprocal of y?

x/1 and y/1 is that right

so if you multiply x times x/1 you will get 1? are you sure?

im srry 1/x and 1/y

okay good. so now you have two numbers 1/x and 1/y.
what is their average?

2/xy

(1/x+1/y)/2

ok thank you

or rather, 2(x+y)/xy

no, its the first one. sorry.

ok thanks

(:

hey can u help me with another question math mind can u try

post it up as a new question, it's better