Question

I'd appreciate if someone would help, I have been having trouble with these kinds of problems!

At 5:00 p.m., the outside temperature was –9.2°C. By 10:00 p.m., the outside temperature had dropped 4.5°C.

What was the outside temperature at 10:00 p.m.?

Answer 1

draw up a number line like this

Answer 2

-9.2 is between -9 and -10. It is closer to -9

Answer 3

when the temperature drops by 4.5 degrees, we go down the scale 4.5 units

so we need to evaluate `-9.2 - 4.5`

this is the same as adding 9.2 to 4.5 then making the result negative

Answer 4

Thank you this really helps a lot!!

Answer 5

you're welcome