Which of the following questions could be used to represent the equation 9 · x = 72? Nine increased by what number is equal to 72?
Nine multiplied by 72 is equal to what number?
The product of 9 and what number is equal to 72?
The sum of 9 and what number is equal to 72?

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Write the slope intercept equation for line ab.

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)