Which statement about a sphere is true?
The length of the diameter of a sphere is two times the length of the radius of the sphere.
The great circle of a sphere is a three-dimensional circle.
The great circle of a sphere is not the same shape as the base of a cone.
The center of a sphere is created from a plane that passes through the sphere.

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9