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prisoha [69]
2 years ago
6

Help me i need the answer

Mathematics
1 answer:
zysi [14]2 years ago
3 0

9514 1404 393

Answer:

  • arc AB = 102°
  • arc ADB = 258°

Step-by-step explanation:

The measure of an arc is the measure of the corresponding central angle.

__

Short arc AB is shown as subtending a central angle of 102°, so the measure of arc AB is 102°.

__

The sum of arc measures in a circle is 360°, so the measure of arc ADB is 258°, the value that adds with 102° to make 360°.

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Answer:

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Step-by-step explanation:

Given : A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 25 cents each, find the expected winnings for a person buying 1 ticket.

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So, The value of prizes is

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The expected value is

E=\frac{1}{20000}\times 1000+\frac{2}{20000}\times 300+\frac{20}{20000}\times 10-\frac{19977}{20000}\times 0.25

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E=\frac{-3194.25}{20000}

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