Ireally need some ! 1

john spent 6 hours writing an essay. he spent 30 minutes proofreading the essay. write a ratio comparing the time spent writing the essay to the time spent proofreading the essay. write your answer as a fraction reduced to simplest form.

Find the value of x for which abcd must be a parallelogram -9-6x x-30

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

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