The diagonals of parallelogram qrst, tr and , qs intersect at point u. if rs = 10, st = 12, and ru = 9.5, find tu.

Which ratio is equivalent to 10: 85

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

What is the first step of an indirect proof of a number that is divisible by two