What two numbers add up to 1 but multiply to -30

Three coins are flipped. what is the probability that there will be at least two tails?

How do i put 3(x+7) in distributive property

Find the measure of angle y. round your answer to the nearest hundredth. ( type the numerical answer only) a right triangle is shown with one leg measuring 5 and another leg measuring 14. an angle across from the leg measuring 5 is marked y degrees. numerical answers expected!