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

Answer:
[tex]MN = 9.2[/tex]
Step-by-step explanation:
Given
[tex]MN = 6x - 4[/tex]
[tex]NO = 4x + 2[/tex]
[tex]MO = 20[/tex]
Required
Find MN
Since N is between M and O, then:
[tex]MO = MN + NO[/tex]
This gives:
[tex]20 = 6x - 4 + 4x + 2[/tex]
[tex]20 = 6x + 4x- 4 + 2[/tex]
[tex]20 = 10x -2[/tex]
[tex]10x = 20 +2[/tex]
[tex]10x = 22[/tex]
[tex]x = 2.2[/tex]
To solve for MN, substitute 1.4 for x in [tex]MN = 6x + 4[/tex]
[tex]MN = 6 * 2.2 - 4[/tex]
[tex]MN = 9.2[/tex]