The answer should be d
64pi=4pir^2
cancel the pi
64=4r^2
16=r^2
r=4
Step-by-step explanation:
a) X is a discrete uniform distribution. As the number of outcomes is only 3.
b) sum is at least 4
X ≥ 4
i.e (1,3) or (2,3)
probability of X ≥ 4 is 2/3
2/3= 0.667
66.7 % is the probability of the outcome to have a sum at least 4.
c) The 3 likely outcome of X
<em>(1,2) where X ; </em> 1+2=3
<em>(1,3) where X ;</em> 1+3=4
<em>(2,3) where X ;</em> 2+3=5
Mean = 3+4+5/ 3
Mean = 4
Feel free to ask any uncleared step
Answer:
Step-by-step explanation:
Look for the three dots on the x-axis: You find them at -1, 2 and 4.
At these x-values the function has zeros (roots or solutions).
Thus, the 3 correct answers are B (x = 2) and F (x = 4). -1 is also a solution, but is not listed.
x=2.5
Step-by-step explanation:
x+3.5/4=2(2x+2)/4
x+3.5=2x+2/2
x-2x+3.5=1
-x=(-3.5)+1
-x=(-2.5)
-x/(-1)=(-2.5)/(-1)
x=2.5
