Evaluate 5m + x - 9
with step please

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1