Write the following as an algebraic expression. simplify if possible.
subtract 3y-5 from y-7

Determine the next term in the sequence. then write the next 2 terms 4,16,28, what number do you do to get that?

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.