1)-8-11 =
Showing work

-19

Step-by-step explanation:

negative minus negative = negative

Step-by-step explanation:

sWiTcH : -8 - 11 = -19

Results : 8 + 11 = -19

Hope this helps! <3

  12 miles per hour

Showing Work :

This is a fraction equal to

30 miles ÷ 2.5 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2.5

30 miles÷ 2.5

2.5 hours÷ 2.5

=  

12 miles

1 hour

=  

12 miles

hour

= 12 miles per hour