I think it’s 10 bc the number of packs of batteries
Answer:
Right Tail
P(x>3.9)= 0.108
Step-by-step explanation:
In excel, type =NORM.DIST(3.9, 3.7, 0.162, TRUE).
100% - 20% = 80%.
400 is 80% of what number?
Let n = the original price.
400 = 0.80n
400/0.80 = n
€500 = n
Understand?
A=(απr^2)/360=(απd^2)/1440 (r^2=d^2/4)
α=1440A/(πd^2)
s=απd/360 (where s=arc length) so
s=(1440Aπd)/(360πd^2)
s=4A/d and since A=10mi^2 and d=20mi
s=(4*10)/20
s=2 miles
