Please help Find an equation of the circle with the following characteristics
intersepts 4 and -8 contains (-12,-8)

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.