Answer:
47 mph.
Step-by-step explanation:
The unit rate would be in mph.
Divide 423 miles with 9 hours:
423/9 = 47
47 mph, or miles per hour, is your answer.
~
Answer:
5 3/10
Step-by-step explanation:
Answer:
$101.50
Step-by-step explanation:
261/18=
14.5
14.5*7=
101.5
Forever,
Cammie
This is in the fourth quadrant where the cosine is positive
By pythagoras the hypotenuse is 5
so the cosine is 3/5 B
Given:





To find:
The variance. of combined set.
Solution:
Formula for variance is
...(i)
Using (i), we get




Similarly,




Now, after combining both sets, we get




Therefore, the variance of combined set is 15.4.