Write the sum of 56+64 as the product of their gfc and another sum

Find the value of the cosine for angle a

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

Factor and solve to find roots x squared -x - 90 =0