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Marrrta [24]
3 years ago
11

Can 7cm, 8cm, 9cm can be a trangle?

Mathematics
1 answer:
Papessa [141]3 years ago
5 0

1234567899876543210 no

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Five thousand tickets are sold at​ $1 each for a charity raffle. Tickets are to be drawn at random and monetary prizes awarded a
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Answer:

The expected value of this raffle if you buy 1​ ticket is $0.41.

Step-by-step explanation:

The expected value of the raffle if we buy one ticket is the sum of the prizes multiplied by each of its probabilities.

This can be written as:

E(X)=\sum p_iX_i

For example, the first prize is $800 and we have only 1 prize, that divided by the number of tickets gives us a probability of 1/5000.

If we do this with all the prizes, we can calculate the expected value of a ticket.

E(X)=\sum p_iX_i\\\\\\E(X)=\dfrac{1\cdot800+3\cdot200+5\cdot50+20\cdot20}{5000}\\\\\\E(X)=\dfrac{800+600+250+400}{5000}=\dfrac{2050}{5000}=0.41

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5.65 x 10 to the 5th power + 4.87 * 10 to the 3rd power​
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Answer:

569870

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Harrizon [31]

Answer:

x=126 degrees

Step-by-step explanation:

x+21=147   because they are opposite adjacent angles

x=126 degrees

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It’s approximately 50.2
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