Figure efgh is a right trapezoid. what is the measure of angle f? 100 degrees 130 degrees 140 degrees 150 degrees (sorry it's not letting me add the photo)

The complete question in the attached figure

we know that
angle E+angle F+angle G+angle H=360°
9X+14X+4X+90=360°
27X+90=360°
27X=360-90
27X=270-------------> x=270/27------------> x=10°

angle F=14x---------> 14*10---------> 140°

the answer is 
angle F is 140°

Hello!

26xy(x + 5)(y - 4) ÷ 13x(y - 4) =

= 2xy × (x + 5) × (y - 4)x × (y - 4) =

= 2x²y × (x + 5) × (y - 4) × (y - 4) =

= 2x²y × (x + 5) × (y - 4)² =

= 2 × [x × (y - 4)]² × y × (x + 5) =

= 2(xy - 4x)² × y × (x + 5) =

= (2xy + 10y) × (x²y² - 8x²y + 16x²) =

= 2x³y³ - 16x³y² + 32x³y + 10x²y³ - 80x²y² + 160x²y

Good luck! :)