At a certain temperature, the speed of sound in the air is 330 meters per second. which of the following proportions would be used convert this speed into kilometers per second?

The proportion to use must be

Step-by-step explanation:

The calculation must be as follows:

is the speed of sound at certain temperature.

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

step-by-step explanation:

f(gx)=f(1/x+2)

=(1/x+2)+2

=(1+2x)/2+2

=(1+2x+4)/2

= (2x+5)/2