A plane can fly 1440 miles in the same time as it takes a car to go 400 miles. If the car travels 130 mph slower than the plane, find the speed of the plane.
mph
PLEASE PLEASE HELP

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

What is the value of the discrimination for the quadratic equation 0=×2+2+×2