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Ymorist [56]
3 years ago
9

THIS IS A EMERGENCY IM FAILING so BADDD i fell off in 9th grade now im getting 50%

Mathematics
1 answer:
kramer3 years ago
6 0

Answer:

The first one. She wrote because the amount of words typed went up, then the amount of words stays the same since she took a break. The amount of words then go down because she deleted some words then it rises since she starting writing again.

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Ayo runs a fairground game.In each turn, a player rolls a fair dice numbered 1 - 6 and spins a fair spinner numbered 1 - 12.It c
aksik [14]

Using the definition of expected value, it is found that Ayo can be expected to make a profit of £55.8.

The <em>expected value</em> is given by the <u>sum of each outcome multiplied by it's respective probability.</u>

In this problem:

  • The player wins $6, that is, Ayo loses £6, if he rolls a 6 and spins a 1, hence the probability is \frac{1}{6} \times \frac{1}{12} = \frac{1}{72}.
  • The player wins $3, that is, Ayo loses £3, if he rolls a 3 on at least one of the spinner or the dice, hence, considering three cases(both and either the spinner of the dice), the probability is \frac{1}{6} \times \frac{1}{12} + \frac{1}{6} \times \frac{11}{12} + \frac{5}{6} \times \frac{1}{12} = \frac{1 + 11 + 5}{72} = \frac{17}{72}
  • In the other cases, Ayo wins £1.40, with 1 - \frac{18}{72} = \frac{54}{72} probability.

Hence, his expected profit for a single game is:

E(X) = -6\frac{1}{72} - 3\frac{17}{72} + 1.4\frac{54}{72} = \frac{-6 - 3(17) + 54(1.4)}{72} = 0.2583

For 216 games, the expected value is:

E = 216(0.2583) = 55.8

Ayo can be expected to make a profit of £55.8.

To learn more about expected value, you can take a look at brainly.com/question/24855677

6 0
3 years ago
10 &gt; X - 3.<br> Help please
amm1812

Answer:

x<13

Step-by-step explanation:

1. Move variable [x] to left-hand side and change its sign

  Move constant [10] to the right-hand side and change its sign

10>x-3

-x+10>-3-10

2.  Calculate the difference [-3-10]

 -x>-3-10

-x>-13

3. Change the signs [-x>-13] on both sides of the inequality and flip the inequality sign

x<13

4. Solution

x<13

8 0
3 years ago
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What is the volume of a cylinder with a radius of 3 cm and a height of 5 cm?
PSYCHO15rus [73]

Answer:

141.3 cm³

Step-by-step explanation:

V=πr2h=π·32·5≈141.37167cm³

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3 years ago
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A train covers 168 miles at a speed of 42 mph. How much time dod it take?
Sergio039 [100]

Answer:

4 hours

Step-by-step explanation:

42x?=168

?=4

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What is the sum of the geometric sequence -4,24,-144...if there are 8 term? A.-959,781 B. 29,637 C. 26,661 D. 959,780 PLEASE HEL
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It is d because I know it guys trust me it is easy.

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