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loris [4]
3 years ago
9

What is the slope of the line? a.- 5/2 b.- 2/5 c.2/5 d.5/2

Mathematics
1 answer:
DochEvi [55]3 years ago
5 0
(0, -1) (2,4)

4 - -1/ 2 - 0

5/2

The answer will be D
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At a raffle, 1500 tickets are sold at $2 each. There are four prizes given for $500, $250, $150, and $75. You buy one ticket. Us
wolverine [178]

Answer:

<u>The expected value of every ticket is a loss of $ 1.35</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Number of tickets sold at the raffle = 1,500

Price of each ticket = $ 2

Total prizes = 1 * $ 500 + 1 * $ 250 + 1 * $ 150 + 1 * $ 75

2. Use a probability distribution table to calculate the expected value of your gain. Your expected value is_____ ?

Let's answer the question using a probability distribution for the gains, this way:

  • Probability of 1st prize of $ 498 (500 - ticket) = 1/1,500
  • Probability of 2nd prize of $ 248 (250 - ticket) = 1/1,500
  • Probability of 3rd prize of $ 148 (150 - ticket) = 1/1,500
  • Probability of 4th prize of $ 73 (75 - ticket) = 1/1,500
  • Probability of losing $ 2 (ticket) = 1,496/1,500

Now, we calculate the mean for all the tickets (winners and non-winners), this way:

Expected value = [(1,496 * -2) + (1 * 498) + (1 * 248) + ( 1 * 148) + ( 1 * 73)]/1,500

Expected value = [- 2,992 +498 + 248 + 148 + 73)/1,500

Expected value = -2,025/1,500 = - 1,35

<u>The expected value of every ticket is a loss of $ 1.35</u>

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3 years ago
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mariarad [96]
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6 0
3 years ago
HELP PLS ! :) The population of a certain animal species you are studying decreases at a rate of 3.5% per year. Only 80 of the a
Reika [66]
The function:f ( x ) = x * 0.965^twhere x is the initial amount and t is the number of the years80 = x * 0.965^380 = x  *  0.89632x = 80 : 0.89632 ≈ 89Answer:The initial amount of animals was 89.
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Graph: y = (x – 3)2 + 3
dangina [55]

Answer:

Use, y = 3x-3, it might be easier to graph

Step-by-step explanation:

You can convert this equation into slope-intercept for to gramph.

y = (x – 3)2 + 3

y = 3x-6+3

y = 3x-3

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2 years ago
2 (2x + 3 = 1)<br> 7 — бу = 20
max2010maxim [7]

Answer:

x = -1    y =  - 13/6

Step-by-step explanation:

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