This is a trignometry question

hope u will do for me

i will mark brainliest..:)​

Combine the information in the problem and the chart using the average balance method to solve the problem.

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?