3 years ago

What is the length of MN?

Mathematics

2 answers:

Karo-lina-s [1.5K]3 years ago

8 0

The answer is 12 according to Apex

stepladder [879]3 years ago

6 0

Answer:

Step-by-step explanation:

Since the base angles are congruent, this means this is an isosceles triangle. This means that the sides adjacent to the base angles are congruent.

This gives us the equation

3x=x+8

Subtract x from each side:

3x-x = x+8-x

2x = 8

Divide both sides by 2:

2x/2 = 8/2

x = 4

Plug this into MN:

4+8 = 12

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