## anonymous 5 years ago The speed of sound V near the Earth's surface can be represented by this equation, V=20 SQRT t + 273 , where t is the temperature in degrees Celsius. Find the temperature when V = 380 meters per second. Round to the nearest whole number. A. 88 B. 90 C. 92 D. 94

1. anonymous

pls help!! :P

2. anonymous

plug in v, divide by 20, then square

3. anonymous

well plug in the value of V and simply solve for t :)

4. anonymous

Yep. $V = 380 \implies 380 = 20\sqrt{t+237}$

5. anonymous

ohhhh so its just like all the other problems i have been posting wow lol i hate story problems period tho:P

6. anonymous

380=20 SQRT t + 273 107=20sqrt t (107/20)^2=t

7. anonymous

Usually each sentence will be giving you an equation or inequality that you can use. Just try to interpret the sentence into an equation, then take all the equations and try to find what they're looking for.

8. anonymous

ahhhh alright that helps a bunch gave all of ya guys medal thingys!! (: