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Kaylis [27]
3 years ago
14

Tickets for a raffle cost $ 9. There were 788 tickets sold. One ticket will be randomly selected as the winner, and that person

wins $ 1700 and also the person is given back the cost of the ticket. For someone who buys a ticket, what is the Expected Value (the mean of the distribution)? If the Expected Value is negative, be sure to include the "-" sign with the answer. Express the answer rounded to two decimal places.
Mathematics
1 answer:
Juliette [100K]3 years ago
7 0

Answer:

24 because you have to subtract

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One-quarter of the counters in a tub are red. The rest of the counters are green. If there are 48 green counters, how many red c
scZoUnD [109]

There are 16 red counters there.

<h3>Fractions and proportions</h3>

If one-quarter of the counters in a tub are red and the rest are green, then there are three-quarter of the counter in the tub.

Let the total counter be x such that

3/4x = 48

3x = 4 * 48

x = 4 * 16

x = 64

Determine the amount of red counter

Red counter = 64 - 48

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Hence there are 16 red counters there.

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2 years ago
What is 39% of the Pacific Ocean
Cloud [144]

Answer:

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Step-by-step explanation:

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3 years ago
A college administration has conducted a study of 166 randomly selected students to determine the relationship between satisfact
Annette [7]
It would help if we represent the information in form of two-ways table as shown below 

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5 0
3 years ago
Use the binomial expansion and approximation to find √3​
belka [17]

According to the use of binomial expansion, the approximate value of √3 is found by applying the infinite sum √3 = 1 + (1 /2) · 2 - (1 / 8) · 2² + (1 / 16) · 2³ - (5 / 128) · 2⁴ + (7 / 256) · 2⁵ - (21 / 1024) · 2⁶ + (33 / 2048) · 2⁷ - (429 / 32768) · 2⁸ +...

An acceptable result cannot be found manually for it requires a <em>high</em> number of elements, with the help of a solver we find that the <em>approximate</em> value of √3 is 1.732.  

<h3>How to approximate the value of a irrational number by binomial theorem</h3>

Binomial theorem offers a formula to find the <em>analytical</em> form of the power of a binomial of the form (a + b)ⁿ:

(a + b)^{n} = \sum \limits_{k = 0}^{n} \left(\begin{array}{c}n\\k\end{array}\right)\cdot a^{n-k} \cdot b^{k}     (1)

Where:

  • a, b - Constants of the binomial.
  • n - Grade of the power binomial.
  • k - Index of the k-th element of the power binomial.

If we know that a = 1, b = 2 and n = 1 / 2, then an approximate expression for the square root is:

√3 = 1 + (1 /2) · 2 - (1 / 8) · 2² + (1 / 16) · 2³ - (5 / 128) · 2⁴ + (7 / 256) · 2⁵ - (21 / 1024) · 2⁶ + (33 / 2048) · 2⁷ - (429 / 32768) · 2⁸ +...

To learn more on binomial expansions: brainly.com/question/12249986

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8 0
2 years ago
What is the equation of a line that contains the point (2,1) and is perpendicular to the line: y = 3x – 4?
irakobra [83]
There's  a website called desmos.com. That website can tell you the answer
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