1. what percent of 60 is 15 2. what number is 15% of 60
3. 9 is 12% of which number
4. 12% of 72 is what number
5. what percent of 50 is 18
6. 12 is 90% of what number ​

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Maria solved an equation as shown below. what is the solution to maria’s equation?

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)