9514 1404 393
Answer:

Step-by-step explanation:
The interval of interest becomes the limits of integration. ∆x becomes dx, and the xi are replaced by the variable of integration, x.
I think it would be 120 because it is 2 times 60 and they add up to 180 I may be wrong buts that’s what I would do
Answer:
POSSIBLY 2
Step-by-step explanation: wasnt the best at math but i hope u do good