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QveST [7]
3 years ago
11

Verify that the following function is a probability mass function, and determine the requested probabilities.

Mathematics
1 answer:
kirill115 [55]3 years ago
5 0

Answer:

yes

Step-by-step explanation:

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Question 1
Over [174]

Step-by-step explanation:

82 + 16 = 98

Expression A: 122 - 82 = 40

Expression B: 2(62) + 23 = 147

Expression C: 102 - 32 = 70

None of them has the same value as 82 + 16.

8 0
2 years ago
Convert 0.34285714285 into a fraction
harkovskaia [24]

Answer:

34285714285/100000000000

Step-by-step explanation:

5 0
4 years ago
A store has been selling 300 DVD burners sold per week at 350 each. A market survey indicates that for each $ 30 rebate offered
Nana76 [90]

Answer:

3 times rebate will maximize its revenue

Step-by-step explanation:

Given that a store has been selling 300 DVD burners sold per week at 350 each

A market survey indicates that for each $ 30 rebate offered to buyers, the number of units sold will increase by 60 a week.

If x times rebate is offered then units sold would be 300+60x

Thus original revenue= 300*350 = 105000

After rebate of x times 30 dollars we have

New revenue

R(x) = (300+60x)(350-30x)\\= 105000+12000x-1800x^2\\R'(x) = 12000-3600x\\\\R"(x) = -3600

Equate first derivative to 0 to get

x=\frac{12000}{3600} =3.333

i.e. 3 times rebate will maximize its revenue

3 0
3 years ago
The minimum monthly payment for Fern's credit card is 2.5% of her balance or $40, whichever is higher. If Fern's balance at the
vodka [1.7K]
We need to calculate which is higher...2.5% OR $40.

1950 * .025 = $48.75

Thus, 2.5% is higher than $40. So, if allowed, she would opt for the $40 payment. 
8 0
3 years ago
John is filling the bathtub that is 18 inches deep. He notices that it takes two minutes to fill the tub with three inches of. W
morpeh [17]

Answer: No he isn't correct because it would take 12 minutes to fill the bathtub up 18 inches if it continued at the same rate

Step-by-step explanation:

3/2 does not equal 18/10

8 0
3 years ago
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