Question

insert three arithmetic means between 7 and 15​

Answer 1

Answer:

9, 11 , 13

Step-by-step explanation:

Find the average of 7 and 15, that is

$\frac{7+15}{2}$ = $\frac{22}{2}$ = 11

We now have 7, 11, 15

Now find the average of 7 and 11, 11 and 15

$\frac{7+11}{2}$ = $\frac{18}{2}$ = 9

$\frac{11+15}{2}$ = $\frac{26}{2}$ = 13

Thus the 3 arithmetic means between 7 and 15 are

9, 11, 13