First, find the mean. You'll need it to compute the variance.

The variance of the sample is then computed with the formula

The standard deviation is the square root of the variance, so
Answer:
The last answer choice
Step-by-step explanation:
This transformation doesn't not keep its congruent
Answer:
0
Step-by-step explanation:

1 hour has 60 minutes.
Divide miles per hour by 60 to get miles per minute:
200 / 60 = 3.33 ( 3 1/3 ) miles per minute.
Answer:
A is correct
Step-by-step explanation:
A has no solution because since the slopes are the same, setting both equations equal to each other will cancel out the slopes and result in 8=16, meaning no solution will make both sides equal to each other.
B does have a solution because of different slopes
C does have a solution because of different slopes
D does have a solution because of different slopes