Answer:
28.4 mpg
Step-by-step explanation:
Find the unit rate, that is, the number of miles per gallon:
216 miles
----------------- = 28.4 mpg (to the nearest tenth)
7.6 gallons
Answer:
4x+4y
Step-by-step explanation:
Only like terms can be added together so the numbers with the variable x are added together and numbers with the variable y are added together.
The expression can no longer be simplified since it has no other ways to.
For the first one I believe that the numbers are both odd and I am not sure about the second one sorry
Answer:1385.44mm sq
Step-by-step explanation: surface area of a circle = pi x radius squared
3.142 x 21 squared
-2.8 • -2.8 • -2.8 • -2.8 • -2.8 • -2.8
=481.890