It doesn’t show anything?
I believe the answer you are looking for would be C.
Answer:
.25 .75
.44 .56
Step-by-step explanation:
To find the relative frequency, we take the part over the total.
Since this is a relative frequency table, the total for each row is 1
Group 1 A = 15/ (15+45) = 15/60 = .25
Group 1 B = 45/(15+45) = 45/60 = .75
Group 2 A = 20 /(20+25) = 20/45 =.44
Group 2B = 25/(20+25) = 25/45 =.56
Answer:
Step-by-step explanation:
Answer:45 mi/h
Step-by-step explanation:
Recall: Speed = distance / time
Let the time taken for the morning journey be
and the time taken for the afternoon journey be
,and the distance covered be d
that means for the first journey,
30 = 
d = 30 
Also for the afternoon journey,
d = 60 
Equating the two , since the same distance is being covered , we have
30
= 60 
that is
= 
= 2 
Also ,
total distance covered = 30
+ 60 
Average speed = total distance / total time
= 30
+ 60
/
+
Recall that
= 2
, substitute this into the formula for average speed , then we have
Average speed = 30(2
) +60
/ 3
Average speed = 120
/ 3
Therefore :
Average speed = 40 mi/hr