3 years ago

M is the midpoint of LN. If LM = 3x and MN = x + 8, what is MN?

Mathematics

1 answer:

Paul [167]3 years ago

5 0

Answer:

Step-by-step explanation:

Since M is a midpoint of LN, we can see 3x equal to x+8. Remove 1 x to get 2x=8. Solve for x to get x=4. Note that this is not the end to your problem. They asked for the length of MN, not the value of x. Plugging x into MN give you 4+8, which is 12.

(If you need to show work, here it is)

3x=x+8

2x=8

x=4

MN=x+8

MN=4+8

MN=12

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