<em>km</em>=<em>x, </em>the product being represented by <em>x.
</em><em>
</em>
350 people must attend each night to break even.
Hope this helps :)
Work shown in the image.
Answer: The average was 9 years old find the average age of both groups is 10 years old.
Step-by-step explanation:
Formula foe average : 
Given : The first group of students consists of 10 and their average age was 13 years old.
i.e.
(1)
The next group consisted of 30 students and their average was 9 years old.
i.e.
(2)
Then from (1) and (2) , the sum of both groups (first group and next group )students = 130+270 =400
Combined students of both groups (first and next group )= 10+30=40
Now , the average of both groups =

Hence, the average was 9 years old find the average age of both groups is 10 years old.
The answer is 270 . if you multiply all the yds together you will get the solution to your volume
I think the answer would be 32 degrees