Question

What is the average (arithmetic mean) of x, y, and z? If x+y=10; y+z=15; x+z=17.

Answer 1

so we are looking for

\[\large \dfrac{x+y+z}{2}\]

Answer 2

Can you try to get to this form ?

Answer 3

just give it a try using the given equations

Answer 4

compute sum of them
then you have the answer

Answer 5

@Elak any idea?

Answer 6

x+y+y+z+z+x=10+17+15
so its easy to go on!

Answer 7

@amoodarya you just spoiled the questions catch :(

Answer 8

is it 8?

Answer 9

2x+2y+2z=48
x+y+z=48/6 ???

Answer 10

(x+y+z)/3=(10+15+17)/3=42/3=14

Answer 11

:D shame on me :(

Answer 12

other way to compute is
solve the system of equation
and then calculate mean value

Answer 13

thank you very much AravindG and amoodarya

Answer 14

x+y=10
y+z=15
z+x=17
sum of three eq. is
2(x+y+z)=10+15+17=42

so x+y+z=21
now compare it with first equation

Answer 15

yes, it so easy )))

Answer 16

yw :) and

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