Formula for area is:
A = pi*r^2
r = 28
so...
A = 3.14 * 28^2
A = 3.14 * 784
A = 2461.76 cm^2
Formula for circumference is:
C = 2*pi*r
r = 28
so...
C = 2*3.14* 28
C = 6.28*28
C = 175.84 cm
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
a) Poisson probability distribution model
b)
Mean=1.6.
Standard deviation=1.26.
c)
Mean=9.6.
Standard deviation=3.10.
Step-by-step explanation:
a)
The number of cases of salmonellosis has a rare frequency of occurring and also we can assume that trails are independent. So, the X the monthly count of salmonellosis cases in South Dakota is a Poisson random variable.
Thus, the appropriate probability distribution model for X is the Poisson probability distribution model.
b)
The mean and variance of the Poisson probability distribution model is μ the average number of salmonellosis cases per month in South Dakota.
Mean=E(x)=μ=1.6
Standard deviation=√V(x)=√μ=√1.6=1.26
c)
The average number of salmonellosis cases per month =1.6
The average number of salmonellosis cases over 6 months=6*1.6=9.6
The mean and variance of the Poisson probability distribution model is μ the average number of salmonellosis cases over 6 months in South Dakota.
Mean=E(x)=μ=9.6
Standard deviation=√V(x)=√μ=√9.6=3.10
<span>8√5 + 2√45
= </span><span>8√5 + 6√5
= 14</span>√5
hope it helps
It is the first one
That is showoff 210 angel in standard position
Answer:
-(6y + 2z) - 7z - (12z + 32y)
Step-by-step explanation:
