Answer: 3.6 hours
Step-by-step explanation:
Given : The time taken by Blake to paint the room :
The time taken by Ned to paint the room :
Then , the time taken (T) by both of them to paint the room if they work together is given by :-
Hence, it will take 3.6 hours to the two companies if they working together .
180 degrees of the triage
Answer:
b
Step-by-step explanation:
The equation is theta /360 (pi)(r square)
120/360(pi)(36^2)
=1356.5
First arrange the data in an order
3, 3, 3, 7, 7, 10, 10, 12, 12, 13, 14, 17, 17, 18, 21
a.) Q1 = (N + 1)/4th item = (15 + 1)/4 = 4th item = 7
Q2 = 2(16)/4 = 16/2 = 8th item = 12
Q3 = 3(16)/4 = 3(4) = 12th item = 17
IQR = (Q3 - Q1)/2 = (17 - 7)/2 = 10/2 = 5
b.) 82nd percentile = 82(16)/100 = 13th item = 17
c.) 12 is the 8th item which is in the middle of the data set, so the percentile rank is 50%