Question

PLS HELP ASAP

The velocity of sound in air is given by the equation v=20 sq rt 273+t where v is velocity in meters per second and t is the temperature in degrees Celsius. Find the temperature when the velocity of sound in the air is 350 meters per second. round your answer to the nearest degree.
a. -19 degrees celsius
b. 26 degrees celsius
c. 33 degrees celsius
d. none of these

Answer 1

Substitute the value 350 in for your velocity:
350 = 20 * sq rt(273+t)
divide both by 20 --> 17.5 = sq rt(273 +t)
square both to cancel out the sq rt --> 306.25 = 273 +t
then just subtract 273 from both to get 33.25 = t