Answer:
A- 3,000 = 50(60) + b
B- 2,100 = 50(42) + b
Step-by-step explanation:
i just did it

Differentiate both sides wrt
:

By the chain rule, we get


Solve for
:


Answer:
These triangles cannot be proven congruent.
They are similar but NOT congruent.
Step-by-step explanation: