Roots of 16x^2+7x+4=0 are alpha^2 & beta ^2 find the quadratic eqn whose roots are 1/alpha^2 and beta^2

Consider circle c with angle acb measuring 3/4 radians. if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

If wxyz is a square, which statements must be true?