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Roman55 [17]
3 years ago
13

Many stores run "secret sales": Shoppers receive cards that determine how large a discount they get, but the percentage is revea

led by scratching off that black stuff only after the purchase has been totaled at the cash register. The store is required to reveal (in the fine print) the distribution of discounts available. Determine whether the following probability assignment is legitimate?
10% off 20% off 30% off 50% off
a. 0.2 0.2 0.2 0.2
b. 0.5 0.3 0.2 0.1
c. 0.8 0.1 0.05 0.05
d. 0.75 0.25 0.25 -0.25
e. 1 0 0 0
Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0

Answer:

b

Step-by-step explanation:

it makes the most senses the lower the discount the higher the chance

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tensa zangetsu [6.8K]
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you much move the decimal over two places and you would get 58%
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I don’t understand how to do this? please help
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To eliminate a number you must do its opposite so the opposite of -3 is +3 so you +3 to both sides. And always start the equation by eliminating what is not connected to the variable in this case the 9 was connected to the variable as K/9.

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Round to the nearest foot
scoundrel [369]

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3 years ago
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attashe74 [19]
<span>1/2x+3y/4=5 => (1/2)x + (3/4)y = 5

1/5x+3y/2=2  => (1/5)x + (3/2)y = 2

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</span><span>Multiply the 1st equation by -1:

-</span>2x - 3y = -20
2x + 15y = 20 
-------------------
       12y = 0, so y = 0.  Then the first equation becomes  2x + 3(0) = 20, or
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Solution is (10,0).
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3 years ago
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