Question

Please answer this im dying here

Answer 1

`v=20√(273+t);\ t > 0`
We have

`v=358\ m/s`
substitute

`20√(273+t)=358\ \ \ |:20\\\\√(273+t)=17.9\ \ \ |square\ both\ sides\\\\273+t=320.41\ \ \ \ |-273\\\\t=47.41\approx47`
Answer: 47°C

Answer 2

`t\geq-273\\\\ 358=20√(273+t)\\ 17.9=√(273+t)\\ 320.41=273+t\\ t=47.41\approx47`