A community group sells 2,000 tickets for its raffle. The grand prize is a car. Neil and his 9 friends buy 10 tickets each. When
2 answers:
Answer: 1/10
Step-by-step explanation:
Here, Total ticket = 2000
According to the question, ticket bought by Neil's group = 10 × 10= 100 ( because there are 10 person in group and each bought 10 tickets)
Therefore, Probability that Neil's group won the prize, P(G) = 100/2,000= 1/20
Now, The probability that Neil and group won,
Thus, the probability that Neil won when it is found that Neil's group won,
=
= 1/10
Thus, P(N/G)= 1/10
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The value of b is -16 and the value of ac is 60 after comparing with the standard equation.
<h3>What is a quadratic equation?</h3>Any equation of the form where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
As we know, the formula for the roots of the quadratic equation is given by:
We have a quadratic function:
= 3x² - 16x + 20
On comparing with standard function:
b = -16
a = 3
c = 20
ac = 3(20) = 60
Thus, the value of b is -16 and the value of ac is 60 after comparing with the standard equation.
Learn more about quadratic equations here:
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