Answer:
25 students
Step-by-step explanation:
Let x be the number of students in a class.
3/5*x=15, so x=15*(5/3)=25. Hope this helps!
Answer:
See below
Step-by-step explanation:
is the average
is the variance
is the standard deviation
Answer:
2
Step-by-step explanation:
Answer:
(n+4)(n+22)
Explanation:
Use FOIL
First - multiply n•n and get n2
Outside - multiply n•22 and get 22n
Inside - multiply 4•n and get 4n
Last - multiply 4•22 and get 88
You should have n2+22n+4n+88
Then add like terms so 22n+4n and get 26n
You would get n2+26n+88