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Sergeu [11.5K]
4 years ago
10

One urn contains 12 blue balls and 7 white balls, and a second urn contains 8 blue balls and 19 white balls. an urn is selected

at random, and a ball is chosen from the urn.
a. what is the probability that the chosen ball is blue?
b. if the chosen ball is blue,
Mathematics
1 answer:
kozerog [31]4 years ago
7 0
The probabilaty that a blue ball was is maybe 50% because there are 19 and 8 white balls so theres more white but still some blue.
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Amiraneli [1.4K]

Given:

Cost of two donuts and three cookies = $3.30

Cost of five donuts and two cookies = $4.95

To find:

The cost of each donut.

Solution:

Let x be the cost of each donut and y be the cost of each cookie.

Cost of two donuts and three cookies = $3.30

2x+3y=3.30          ...(i)

Cost of five donuts and two cookies = $4.95

5x+2y=4.95          ...(ii)

Multiply equation (i) by 2.

4x+6y=6.60          ...(iii)

Multiply equation (ii) by 3.

15x+6y=14.85      ...(iv)

Subtracting (iii) from (iv), we get

15x+6y-4x-6y=14.85-6.60

11x=8.25

Divide both sides by 11.

x=\dfrac{8.25}{11}

x=0.75

Therefore, the cost of each donut is $0.75.

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Answer:

Step-by-step explanation:

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but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25

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Answer:

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Step-by-step explanation:

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Answer:

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