Since 20 is a factor of 40, the least common denominator of 3/20 and 9/40 is 40.
The answer is 100 I’m sure
Answer:
Step-by-step explanation:
Given that the number of drivers who travel between a particular origin and destination during a designated time period has a Poisson distribution with parameter μ = 20 (suggested in the article "Dynamic Ride Sharing: Theory and Practice"†).
a) 
b) 
c) 
d) 2 std dev = 2(20) =40
Hence 2 std deviation means
20-40, 20+40
i.e. (0,60)

Step-by-step explanation:
Area=23ft²
Side=√23ft²
Side=4.8ft