Temperature affects the speed of sound. the speed (v) of sound near earth's surface, in meters per second, is given by v=20√t+273, where t stands for the temperature of the air in degrees celsius. if the speed of sound is 300 meters per second, what is the temperature in degrees celsius?

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels

Measure a and b and find their sum. how are the angles related?