Answer:
So the number of total combinations is 35.
Step-by-step explanation:
We know that Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses.
Therefore, she have total 7 courses.
So, we calculate the number of combinations to choose 4 out of 7 courses.
We get:

So the number of total combinations is 35.
I think 14d hope this helps
The answer would be 18mm because 6+6+3+3 considering that there are 4 sides.
These two events are complimentary. So P(not rain)=1-P(will rain)
So, 75% is my guess
64/100*75=48 That is the answer