A betting company wishes to sell 5000 tickets 50 of which will win prizes. I.) A students decided to buy 200 tickets. Let X be the number of tickets that win a prize. Write the probability distribution of X and give its mean. Ii.) Using a Poisson approximation for the distribution of X find the probability of at least three tickets winning a prize. Iii.) Calculate the number of tickets that should be bought so as the probability of at least one winning a prize is 90%
Answers
Answer:45000,000,000,000
Step-by-step explanation:you just have to times it
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What is 15% of 120 and how do you do it
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0.35 x 125 = 43.75
43.75 litres per day
Answer: The answer will be 78.75
Step-by-step explanation:
I have answer these question before.
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Answer: B
Step-by-step explanation:
The mean and median will be close or the same when the graph is symmetrical
Answer: 30
Step-by-step explanation:
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So 19
= 373/5 + 59/3
= ((373 × 3) + (59 × 5)) / (5 × 3)
= (1119 + 295) / 15
= 1414/15
= 1414/15
= 94 4/15
74+19= 93
for 3/5+2/3 we need a common denominator which in this case would be 15 (the product of the two already existing denominators)
3x3=9 (the 3s are first numerator and the second denominator) so the first fraction is 9/15
5x2=10 (the first denominator and the second numerator) so the second fraction would be 10/15
9+10=19 (the numerators in both fractions) so it's 19/15 which we convert to a mixed numeral which is 1 4/15
93+1 4/15=94 4/15
hope this helps :)
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(x-a)^2+(y-b)^2=r^2 where C(a, b) is the center.
In order to find r you have to find the distance between C(-2, 1) and let's say A(-4, 1)
The formula for distance is:
r = 2
The equation of circle is
(x+2)^2+(y-1)^2=4
I hope that this is the answer that you were looking for and it has helped you.
NEED ANSWER NOW
Answers
Answer:
a=5
Step-by-step explanation:
you would divide 245 by 49 to get a
a= 5
y = x – 5
Which description best describes the solution to the system of equations? (4 points)
Lines y = –2x + 3 and y = 3x - 5 intersect the x-axis.
Line y = –2x + 3 intersects line y = x – 5.
Lines y = –2x + 3 and y = 3x – 5 intersect the y-axis.
Line y = –2x + 3 intersects the origin.
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The answer above/below is incorrect!!!!!!!!!!!!!! I just took the test and it was wrong!!!!