Johnny is a carpenter who builds wall shelves. The shelves are supported by pieces of wood in the shape of right triangles. The shelf support has a hypotenuse (C) of 19 inches and the side that touches the wall (B) measures 10 inches. Find the third side (A) of the right triangle.

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no