Answer:
C. 54
Step-by-step explanation:
I just answered the expression as i went and I got 54.
Answer:
(0,0) it's also the origin.
The answer is 6/21 is not in its simplest form as you can still divide them both by 3
Answer:
You need to use A, B, and C.
Step-by-step explanation:
Let's treat the units as variables. I'll illustrate why in a moment.

Now, as you can see, we have a giant mess of units to deal with. This is where we can treat the units like separate variables and use a bit of algebra to make our lives easier:


So, backtracking through that entire mess, we had to use
.
These correspond to the options of A, C, and B accordingly.
So you need to use A, B, and C.
Answer:
9/4
Step-by-step explanation:
2 1/4 = 9/4 From mixed fraction to an improper fraction: "the numerator of the improper fraction" = "denominator" xx "the whole number" + "the numerator of the mixed fraction" The denominator remains as it is. So 2 1/4 = (4 xx 2 + 1)/4 = 9/4