The lengths in cm, of the length of a rectangle is 2x+3 cm and of the width of the rectangle is x+5 cm.

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

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