The answer is D. 100. I hope this got to you in time.
Answer:
10 months
Step-by-step explanation:
22x+80=30x
subtract both sides by 30x
-8x+80=0
then subtract 80 from both sides
−8x=−80
divide both sides by -8
x=10
Answer:
there are 48 possible seating arrangements.
Step-by-step explanation:
This can be calculated using the rule of multiplication, in which the number of options depends on the following cases:
- Betty is sitting on the 1st middle seat:
<u> 3 </u> * <u> 1 </u> * <u> 2 </u> * <u> 2 </u>* <u> 1 </u> = 12
Aisle Seat 1st Middle Seat 2nd Middle 3rd Middle 3rd Row Seat
In this case:
- There are 3 options for aisle seat: Archie, Jerry or Moose.
- There is 2 option for 1st middle Seat: Betty.
- There are just 2 options for the 2nd Middle seat because Veronica can be beside Betty.
- There are 2 options for 3rd seat: The two friends that we doesn't assign a seat yet.
- There is 1 option for 3rd row seat.
At the same way, we can calculate the possible seating arrangements in the following cases:
- Betty is sitting on the 2nd middle seat:
<u> 3 </u> * <u> 2 </u> * <u> 1 </u> * <u> 1 </u>* <u> 1 </u> = 6 Aisle Seat 1st Middle Seat 2nd Middle 3rd Middle 3rd Row Seat
- Betty is sitting on the 3rd middle seat:
<u> 3 </u> * <u> 2 </u> * <u> 2 </u> * <u> 1 </u>* <u> 1 </u> = 12
Aisle Seat 1st Middle Seat 2nd Middle 3rd Middle 3rd Row Seat
- Betty is sitting on the adjoining seat in the third row:
<u> 1 </u>* <u> 3 </u> * <u> 3 </u> * <u> 2 </u> * <u> 1 </u>= 18
3rd Row Seat Aisle Seat 1st Middle Seat 2nd Middle 3rd Middle
So, there are 48 possible seating arrangements and it is calculate as:
12 + 6 + 12 + 18 = 48
C. Of the seventh graders, 30% are in the band. If the band has the same number of sixth graders as seventh graders, what percentage of the sixth graders are in the band? Explain how you found your answer.
