Answer:

Step-by-step explanation:
the unit of length is meter,
so, 80cm=0.8cm, 10cm=0.1m
the length of the rail=
=
Answer:
The measure of angle 3 is 42
This makes sense to me: m=(y-6)/3
m is the number of muffins each friend gets, y is the original quantity of muffins, -6 is = to the number of muffins you freeze, and the /3 is to split the remaining (unfrozen) muffins equally.
If you multiply 20 and 10 you get 200 after that you subtract 100 to get...One hundred