Caitlin lives in Wollongong and travels to Sydney daily.
The car trip requires her to travel at different speeds. Most often she travels 30 kilometres at 60 km/h and 40 kilometres at 100 km/h.

What is her average speed (in km/h) when traveling to Sydney? (Answer correct to two decimal places.)

answer: idk wbu

step-by-step explanation: umm..

choose (5, 1.5) and (-1.5,-3.5)

step-by-step explanation:

5 - 1.5 =3.5

-1.5 - (-3.5) = 2

3.5 + 2 =5.5

hope this !

well if you have a decimal you have to line them up and make sure the you have everything   straight and then add or subtract some thing with   division and   multiplying so just like them up