Brandon swims several times per week in a lake near his home. last summer, the average water temperature was 20 °c. this summer, the average water temperature was 17 °c. what was the percent of decrease in the temperature?

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.

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

How do your peer relationships affect your overall health status? what can you do to improve your peer relationships?