Railroad tunnel is shaped like a parabola: the height of the tunnel at the center is 54 ft and the vertical clearance must be 18 ft at a point 8 ft from the center.
find an equation for the parabola

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

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

The product of sin 30 degrees and sin 60 degrees is same as the product of