If AB = 9, and AC = 4, then what is angle B?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is