Question

N is between Mand Q MN-6X 4, and NO = 4x+2. If MO=20, what is MN?
4
8
2
20

Answer 1

`MN = 9.2`

Explanation:

Given

`MN = 6x - 4`

`NO = 4x + 2`

`MO = 20`

Required

Find MN

Since N is between M and O, then:

`MO = MN + NO`

This gives:

`20 = 6x - 4 + 4x + 2`

`20 = 6x + 4x- 4 + 2`

`20 = 10x -2`

`10x = 20 +2`

`10x = 22`

`x = 2.2`

To solve for MN, substitute 1.4 for x in
`MN = 6x + 4`

`MN = 6 * 2.2 - 4`

`MN = 9.2`