Ther are 6 girls and 7 boys in a class. A team of 10 players is to be selected from the class. How many different combinations o
1 answer:
Answer:
There are 286 possible combinations
Step-by-step explanation:
To solve this problem we must use the formula of combinations.
Where n is the number of players that there are and elect r of them
In this case there are 7 + 6 = 13 players and you choose 10 of them
Then we look for 13C10
There are 286 possible combinations
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First case:
average of test score =70
number of students =p
total score of 'p' students = ( average of test score)*( number of students)
total score of 'p' students =70p
Second case:
average of test score =92
number of students =n
total score of 'n' students = ( average of test score)*( number of students)
total score of 'n' students =92n
total number of students = p+n
total average score =86
so, total score =86(p+n)
total score = total score of 'p' students +total score of 'n' students
now, we can simplify it
now, we can find p/n
................Answer
for a triangular prism, its volume will simply be <u>area of its base</u> times its length.
the are of the base for this one is simply any of those triangular bases. Now, let's notice, the right-triangle has a base of 9 and a height o 9, notice the tickmarks, whilst the prism also has a length of 13.