Answer:
50 miles per hour
Step-by-step explanation:
Given:
Distance planned to travel each day is,
Hours of driving for covering the above distance is,
The question asks to find the number of miles per hour Anderson plan to drive.
In other words, we need to calculate the average speed with which Anderson has to drive in order to cover 500 miles in 10 hours daily.
Therefore, the formula to calculate speed when distance covered and time taken are known is given as:
Average speed =
Average speed =
Plug in 500 miles for 'D', 10 h for 't' and solve for speed. This gives,
Therefore, Anderson need to drive at an average of 50 miles per hour to cover the distance of 500 miles in 10 hours.
Answer:
<h2>181 440</h2>
Step-by-step explanation:
We have 9 choices for Choosing the first object
8 choices for Choosing the 2nd object
.
.
.
3 choices for Choosing the seventh object
Therefore if we want to choose7 objects without replacement from 9 objects we have : 9×8×7×6×5×4×3 = 181 440
Also ,we can calculate it this way :
9P7 = 181 440
Yes, when the radius is two.
You set 2*pi*r equal to pi*r^2.
Then you find the radius, which is two, the only possible solution for this scenario.
Answer:
I thinks its r = 11
Step-by-step explanation:
So you just need to take the number to the r and multipliy it by r So,
9x2=18
then minus it by the other number which would Be 7 so.
18-7=11
Answer:
The sample size is used for the survey (n) = 1082
<u>Step-by-step explanation</u>:
<u>Explanation</u>:-
<u>Step(i)</u>:-
Given data There has been a trend toward less driving in the last few years, especially by young people. From 2001 to 2009
Assume the standard deviation was 2000 miles in 2009
Given the Population standard deviation 'σ' = 2000 miles
Given the margin of error at 90% of confidence interval
Margin of error = 100 miles
The z- score value at 90% of confidence interval = 1.645
<u>Step(ii):-</u>
The Margin of error is determined by
Now the sample size
√n = 32.9
squaring on both sides , we get ' n ' = 1082.41
<u>Final answer:-</u>
The sample size is used for the survey (n) = 1082