Respuesta :

5936

Answer:

42

Explanation:

so like the 1 part of the triangle 1 and so the bottom of the triangle has to be the same. And the height is 9.  

Answer:

C. 21

Explanation

In this triangle, 4n + 9 is the midsegment.

According to the Midsegment of a Triangle theorem, 4n + 9 is equal to half of 14n.

14n/2 = 7n

7n = 4n +9

-4n     -4n

3n = 9

/3     /3

n = 3

4(3) + 9 = 21

Therefore the answer is C