Find the length of the side CD in the pentagon ABCDE. It's not the one marked please help!

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line