Use multiplication:
90 minutes per day * 30 days is 2,700 minutes in a month with 30 days.
2,700 minutes is also equal to 45 hours, as 2,700 minutes / 60 minutes per hour is 45 hours.
Answer: C
Step-by-step explanation:

Find the least common denominator of 4, 3, and 12.
4-3-12 | 3
4-1-4 | 4
1-1-1 |-------- 12
The first fractions needs to be multiplied by 3, and the second fraction, by 4

Solve;

Add the fractions with positive signs and subtract the one with negative sign.

Solve;

Simplify by 4;
16/4=4
12/4=3

Answer:
it would be a
Step-by-step explanation:
Answer:
one
Step-by-step explanation:
I think, there were 4 lines and the two lines are reaching each other
Answer:
1/3 is bigger
Step-by-step explanation:
6/12 might look bigger but its not
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