Which statements about the opposite of −12 are true? select each correct answer. −12 and its opposite are on located on the same side of zero on a number line. the opposite of the opposite of −12 is −12 . the opposite of −12 is −112 . −12 and its opposite are located the same distance from zero on a number line. there's more than 1 answer

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

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)

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min what is the study margin of the error?