Answer:
The answer after division is: 
Step-by-step explanation:
The given question involves two mixed fractions that are being divided.

First of all, we will convert the fractions into proper fractions

When the division is performed, the second fraction is reversed
So dividing gives us:

Hence,
The answer after division is: 
Step-by-step explanation:
A straight line adds up to 180°
m+3m=180°
4m=180°
m=45°
3m=45°
angle CBD=3(45)
=135°
Yes, I believe they are equivalent because if you were to solve -1/4(10t-15) it would equal -2t+3
1 yard=3 feet so 100 yard=300 feet