Rearrange to make subject x 4(x-3)/a=y

If a =6, what is the value of 2a(3b + 5c)?

Find the value of the cosine for angle a

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.