1= 1/4c what is c ? pls help i could not figure this one out haha

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*