A traffic survey recorded the number of passengers in cars entering a parking lot. The findings are summarized as follows.
No. passengers
Frequency
1
45
2
68
3
34
4
13
Let the random variable X be the number of passengers in a car. Find the probability distribution of X.
What will be an ideal response?
Mathematics
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Provide an appropriate response.Add: 813 + 502 + 307
A. 1,602 B. 1,622 C. 1,612 D. 9,388 E. none of the above
Mathematics
Perform the indicated operations.
- 
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the foci of the ellipse.
+ 
= 1
A. (-3, -1+ 
), (-3, -1 - 
)
B. (-9, -1), (3, -1)
C. (- 
, -1), (
, -1)
D. (-3 + 
, -1), (-3 - 
, -1)
Mathematics
Find the real solutions of the equation.(9x + 2)2 + 10(9x + 2) + 21 = 0
A. 
B. 
C. 
D. 
Mathematics