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just olya [345]
3 years ago
14

Leon's mother paid $2.16 for 3 pounds of sugar. How much would 1 pound of sugar cost?

Mathematics
1 answer:
arlik [135]3 years ago
8 0

Answer:

.72

Step-by-step explanation:

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At a sale, coats were sold for $118 each. If the coats originally cost $200 each, what percentage of its original price was a co
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In a lottery game, a player picks six numbers from 1 to 21. If the player matches all six numbers, they win 40,000 dollars. Othe
Darina [25.2K]

Answer:

The expected value of this game is -$0.26.

Step-by-step explanation:

Expected value:

Each possible earning/loss multiplied by it's probability.

Probability:

Number of desired outcomes divided by the number of total outcomes.

In this question, the order in which the numbers are chosen is not important. So we use the combinations formula to solve.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Probability of winning:

Desired outcomes:

The 6 correct numbers, so D = 6

Total outcomes:

6 numbers from a set of 21. So

T = C_{21,6} = \frac{21!}{6!15!} = 54264

Probability:

p = \frac{1}{54265}

Expected value

\frac{1}{54265} probability of earning 40,000.

\frac{54264}{54265} probability of losing 1. So

E = \frac{40,000}{54265} - \frac{54264}{54265} = -0.26

The expected value of this game is -$0.26.

7 0
3 years ago
Which best describes the polygon whose vertices in the coordinate plane are (-2, 3), (2,3), (2, -1), (-2, 1)?
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You can see the polygon in the attached figure.

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3 years ago
What is the relationship between APB and minor arc AB?
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Answer:

Step-by-step explanation:

If APB is measured in radians, then the arc length AB = APB(r) where r is the radius of the circle.

4 0
2 years ago
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