There are 12! ways to line 12 people up.  That is 12 factorial (the name for the exclamation point
12! means 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
Using a scientific calculator to compute 12!, we get 479,001,600 ways to line up 12 people.  I know it sounds amazing but here is a chart.
People            Ways
3                       6
4                      24  (Notice that if you multiply 6 x 4 you get 24)
5                     120  (Notice that if you muliply 24 x 5 you get 120  etc.)
6                     720
7                     5040
8                    40,320
9                    362,880
10                 3,628,880
11               39,916,800
12               479,001,600
        
             
        
        
        
Answer:
so the answer is 31
Step-by-step explanation:
well first you have to see how much it increases each time 
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so that would be three
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so 
7_10_13_16_19_22_25_28_31
1    2   3    4   5    6     7     8    9
 
        
                    
             
        
        
        
Answer:the total discounted cost for your stay is $1948.2
Step-by-step explanation:
If you book your room six months in advance, you will save 15% off the price of the room. You decide to take advantage of the offer and book a room for 6 nights. If the original price per night for the room is $382, this means that the value of the discount would be 
15/100 × 382 = 0.15 × 382 = $57.3
The cost of the room for a night would be 
382 - 57.3 = $324.7
Since you are staying for six nights, 
the total discounted cost for your stay would be 
324.7 × 6 = $1948.2
 
        
             
        
        
        
Answer:
2y=5x+2c
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Angles on a straight line add up to 180 so:
180-110 = 70
As this is an isosceles triangle, 
y must be 70.
We know y is 70 and there are 2y and one x. A triangle also adds up to 180.
This means:
2y+x = 180
2(70)+x = 180
140+x = 180
x = 40
x = 40  y = 70