If a // b and c // d in the figure below, then what is
the value of x?

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.