The answer is 1 because you have to Substitute Two form X then it would just be Then substitute 2 form 1 and you would get 1
I don’t know it’s could be better if I didn’t have any money for that you could do it omg is it like that a lot but you don’t want it anyway I can do
Answer:
15.
Step-by-step explanation:
Please consider the complete question.
You have to answer 2 essay questions for an exam. There are 6 essays to choose from. How many different groups of 2 essays could you possibly choose?
We will use combinations formula to solve our given problem.
The number of combination of n terms r terms chosen at a time is given by formula:






Therefore, there are 15 different groups of essays could you possibly choose.
So, to find the day rate, we divide 90 by 6 = 15
So then we find 15n = 300 for the rate.
n = 20
It will take Stephen 20 days to read a 300-page book