The Rotokas of Papua New Guinea have twelve letters in their alphabet. The letters are: A, E, G, I, K, O, P, R, S, T, U, and V.
Mnenie [13.5K]
12 letters in all but less "S" which is not allowed. That leave 11 usable letters, of which 5 distinct letters are used for each plate.
begins with G or K (2 choices). That leaves 10 letters.
Ends with T (1 choice). That least 9 for the middle letters.
Second letter (9 choices)
Third letter (8 choices)
Fourth letter (7 choices)
Total number of licence plates
=product of choices of letters for each position
= 2*9*8*7*1
=1008
Answer:
89.5
Step-by-step explanation:
59.5
30.0
89.5
The round trip was 8 miles ( 4 + 4 = 8)
The total time for the trip is 3/10 + 1/2
Rewrite 1/2 as 5/10
Now add 3/10 + 5/10 = 8/10 = 4/5 hour for the 8 mile trip.
Now to find miles per hour, divide total miles by total time:
8 miles / 4/5 hour
When you divide by a fraction flip the fraction over and multiply:
8 x 5/4 = 40/4 = 10
The average rate was 10 miles per hour.
Step-by-step explanation:
(1/12)^-2b x 12^-2b+2=12
12^-(-2b) x 12^-2b+2=12
12^2b+(-2b+12)=12
2b-2b+12=12
=1
