Find the area of the figure 15 mm 30mm 15mm 10mm

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

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?