Question

If x+y=5,y+z=8, and z+x=9, what is the average(arithmetic mean) of x,y, and z?

Answer 1

zArithmetic mean ( or Average) is
\[\frac{x+y+z}{3}\]
we have
\[x+y=5\]
\[y+z=8\]
\[z+x=9\]
Add all the three equations, what would you get?

Answer 2

2x+2y+2z=22

Answer 3

good, can you find the average now?

Answer 4

ehh

Answer 5

2x+2y+2z=22/6?

Answer 6

ehh

Answer 7

what should I do now, Son Goku?

Answer 8

Average=
\[\frac{x+y+z}{3} \ \ \ \ \ \ \ \ =\frac{22}{6}\]
This is the mean

Answer 9

hmm

Answer 10

11/3?

Answer 11

is that the answer, 11/3?

Answer 12

yeah

Answer 13

yeah!!

Answer 14

you a big fan of DBZ?

Answer 15

I used to like it, but haven't seen it recently :)

Answer 16

ahh

Answer 17

k

Answer 18

ty