Why is a parallelogram not the same type of quadrilateral as a trapezoid

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay