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3 years ago

What is the length of MN

Mathematics

2 answers:

dexar [7]3 years ago

8 0

15, because angle L and N are equal, 3x=x+10 so x=5, plugging it in, we get that MN is 15

Paraphin [41]3 years ago

4 0

Answer:

Option A. $MN=15\ units$

Step-by-step explanation:

we know that

An isosceles triangle has two equal sides and two interior equal angles

The triangle LMN is an isosceles triangle

therefore

$ML=MN$

substitute the values

$3x=x+10$

solve for x

$3x-x=10$

$2x=10$

$x=10/2=5\ units$

Find the length of MN

$MN=x+10$ -----> $MN=5+10=15\ units$

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