2345 rounded off to the nearest hundred

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.