Decreasing -5 times a number by 18 is equal to
decreasing 9 times the number by 25

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 sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air