The formula for the volume of a sphere is
, where r is the radius of the sphere. The steel ball to the right is in the shape of a sphere and has a diameter of 18 millimeters.
a. Find the exact volume of the sphere.
b. Find a 2-decimal-place approximation for the volume.​

How do you solving the solution of each system using elimination?

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .