Question

Insert three arithmetic means between -16 and 4.​

Answer 1

Three arithmetic means between -16 and 4 are : 20 , 10 and
`(20)/(3)`

Explanation:

we have to find out three arithmetic means between -16 and 4

-16 , ____ , ____ , ____ 4

so , lets take the mean like this ,

-16 , -16+d , -16+2d ,-16+3d , 4

First mean -: -16 +d = 4

d= 4+16

d = 20

second mean -: -16 +2d = 4

2d= 4+16 = 20

d=
`(20)/(2)`

d= 10

third mean -: -16+3d = 4

3d = 20

d=
`(20)/(3)`

Therefore , all the three arithmetic means between -16 ad 4 are 10 , 20 and
`(20)/(3)` .