Answer:
120
Step-by-step explanation:
Upon pondering the wording here, I am thinking this must be a permutation. The words "distinct digits" tell me, for some reason, that order matters. The formula for the permutations of this is
₆P₃ = 
which simplifies to
Answer:
25
Step-by-step explanation:
its both numbers squared and added, then square root the result
The margin of error is 1.41.
The margin of error is calculated using the formula
where z is the z-score associated with the confidence level, σ is the standard deviation, and n is the sample size.
For a confidence level of 95%, we find the z-score by first converting the percent to a decimal and subtracting it from 1:
1 - 0.95 = 0.05
Divide that by 2:
0.05/2 = 0.025
This is the area in each tail.
Subtract this from 1 again, since we want the area between the tails:
1 - 0.025 = 0.975
Looking this up in the z-table (http://www.z-table.com) we see that the z-score is 1.96.
Using our information, we have:
Set the amount of miles equal to x. Each mile costs 75 cents and the final cost was 25.50, so use the equation .75x= 25.50 and solve for x to find the amount of miles. Divide each side by .75, and x equals 34, so the cab ride was 34 miles long.
