Answer:
A≈414.69
Step-by-step explanation:
By the chain rule,

When

, the derivative has a value of
Answer:
2x +5x-20+3x=180(angle of triangle)
10x-20=180
10x=180+20
10x=200
x=200/10
x=20
A. The base angles are congruent
15 I think??(sorry IF YOU GET UT WRONG)