A) Punto de intersección de las tres alturas​

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

the function makes a strait line horizontally with no x intercept but a y intercept at 9.