First we find the mean (or the average)...
average : (82 + 76 + 93 + 82 + 73 + 80 / 6) = 486/6 = 81
now we subtract the average from every data point.....then square the result
82 - 81 = 1.......1^2 = 1
76 - 81 = -5....-5^2 = 25
93 - 81 = 12....12^2 = 144
82 - 81 = 1.......1^2 = 1
73 - 81 = -8.....-8^2 = 64
80 - 81 = -1.....-1^2 = 1
now we find the mean (or average) of those numbers
(1 + 25 + 144 + 1 + 64 + 1) / 6 = 236/6 = 39.33
that is ur variance....to find the standard deviation, take the square root of ur variance.....
square root 39.33 = 6.27 <==
424.8 gallons because you have to multiply the number of miles per gallon by the amount of gallons that the tank can hold. 23.6 times 18= 424.8
Answer:
2 minutes
Step-by-step explanation:
Just divide 16 and 8.
Hope this helped you!
5 1/2 - 3/8
Make 5 1/2 into a improper fraction
5 1/2=11/2. Mutiply the whole number with the denominator. 5*2= 10. Add 10 with the numerator. 10+1= 11
11/2-3/8.
Find the common denominator for 11/2 which is 8. Mutiply by 4
11(4)/2(4)= 44/8
44/8-3/8= 41/8= 5 1/8
Answer: 41/8 or 5 1/8
