What is the product of 7v 3 and 9v 15 in simplest radical form?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%