Question

What is the value of k

Answer 1

solution:

1. ang.XZY+ang.ZXY=ang.ZYM reason: the exterior angle of a triangle is equal to the sum of opposite interior angles 2.(4k+5)+(6K+10)=115 3. 10k +15=115 4. 10k =100 5 k= 10

Answer 2

k = 10

Explanation:

180° - 115° = 65°

(4k + 5) + (6k + 10) + 65 = 180

4k + 5 + 6k + 10 + 65 = 180

10k + 80 = 180

10k = 100

k = 10