If a 16-foot silo casts a 12-foot shadow, what is the measure from the tip of the shadow to the top of the silo?

To find the length of the distance from the tip of the silo to the shadow, you have to use the Pythagorean theorem. Both the silo and the shadow are the legs of the triangle. So they go into the a and B of the formula:

a^2+b^2=c^2
16^2+12^2=c^2
256+144=c^2
400=c^2
20=c

So the distance from the tip of the silo to the shadow is 20 ft.

It’s going to be d. 4x^2-4x-19’