Answer:
- (ax + by + cz)/(a + b + c)
Step-by-step explanation:
<u>In terms of the scores we calculate the sum as:</u>
<u>The number is the sum of the frequencies:</u>
<u>Mean average score is:</u>
- (ax + by + cz)/(a + b + c)
Answer:
Option A.

Step-by-step explanation:
The given sequence in the question is 6,-24,96,-384.......n
and we have to give the recursive formula for this arithmetic sequence.
We can re write the sequence to make it more simpler
6,6(-4),(-24)(-4),(96)(-4).......n terms
Now we can say 
and 
Therefore the recursive formula of the sequence is
Answer:
13 and 14
Step-by-step explanation:
25 kids in all
2xboys:3x girls
so the equation would be
2x+3x=25
solve,
5x=25
/5 /5
x=5
2x=10
3x=15
10 boys and 15 girls