For an exponential distribution, the standard deviation is equal to the mean.
(a) the standard deviation is 4 miles.
Answer: C
Step-by-step explanation:
We can use the expanding rule to get that one if the expressions is
(9x^2 + 2x - 7)x + (9x^2 + 2x - 7)(-4)
What is the size of trapezoid?
24/r= 36/27
Cross multiply:
36*r= 24*27
⇒ r= 24*27/36= 18
r=18~
w/0.16 = 6.25
⇒ w= 6.25*0.16
⇒ w= 1
w=1~