find the measure of the arc or angle indicated. assume that lines which appear to be diameters are actual diameters just enter the number no degree sign or word

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.