Another parking lot with three sections has 80 cars in it. is it possible for ratio of the number of cars in the first section to the number of cars in the second section to the number of cars in the third section to be 1: 2 : 3? explain why or why not.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

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)

Acollection of nickels and quarters is worth $2.85. there are 3 more nickels than quarters. how many nickels and quarters are there?