The sum of 4 consecutive odd numbers is 40. what is the second number in this sequence?

9 is the second number in this sequence

Step-by-step explanation:

So if n is the first integer in this sequence, then the following are true of the sequence of consecutive odd numbers (just means the odd integer right after):

First integer:  n

Second integer: n+2

Third integer: n+4

Fourth integer: n+6

Sum of these integers are 4n+12=40

Subtract 12 on both sides: 4n     =28

Divide both sides by 4:        n       =7

So first integer 7

Second integer: 9

Third integer:  11

Fourth integer: 13

When you add these up you do get 40!

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36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls