Because the order doesn't matter on where each person sits use the combinations formula:
C = n! / (r!(n-r)!)
Where n is the total number of people and r is the number of chairs.
C = 6! / (4!(6-4)!)
C = (6*5*4*3*2*1) / ((4*3*2*1(2*1))
C = 720 / (24*2)
C = 720 / 48
C = 15
There are 15 different arrangements.
Its a true equation. Every value of x would make it true. Every number is real (XER)
Answer:
2n - 11
Step-by-step explanation:
Note there is a common difference d between consecutive terms of the sequence, that is
d = - 7 - (- 9) = - 5 - (- 7) = - 7 + 9 = - 5 + 7 = 2
This indicates the sequence is arithmetic with n th term
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - 9 and d = 2, thus
= - 9 + 2(n - 1) = - 9 + 2n - 2 = 2n - 11
Answer:
See below ~
Step-by-step explanation:
<u>Part A</u>
- Male elk = 105/450 = 7/30
- Female elk = 120/450 = 4/15
- Adult elk = 173/450
- Baby elk = 52/450 = 26/225
<u>Part B</u>
- Male elk = 7/30 = 0.233 = 23.3%
- Female elk = 4/15 = 0.267 = 26.7%
- Adult elk = 173/450 = 0.384 = 38.4%
- Baby elk = 26/225 = 0.116 = 11.6%
Answer:
19 and 21
Step-by-step explanation:
9 10
33 55
times
then equals 21
9+10=19