(4x-2)*6(2x+7) in standard form

4. find the geometric mean of 4 and 12. 24 8

For the equations below which statement is true ? -2x=14 6x=-42

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.