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Citrus2011 [14]
3 years ago
15

Practice Problems

Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0
15 red marbles
12 green marbles
15+12 = 27 marbles in total
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Step-by-step explanation:


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Anita plans to give her husband 3 shirts for his birthday. She narrows the search to 3 shirts from a selection of 17 shirts at D
Lunna [17]

Using the combination formula, it is found that she can select the shirts in 775,200 ways.

The order in which the shirt are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

Combination formula:

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

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

In this problem:

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  • Then, 3 shirts from a set of 20.
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T = C_{17,3} \times C_{20,3} = \frac{17!}{3!14!} \times \frac{20!}{3!17!} = 680 \times 1140 = 775200

She can select the shirts in 775,200 ways.

To learn more about the combination formula, you can check brainly.com/question/25821700

5 0
2 years ago
(6x – 2y = 5<br> 4x – 3y = 5
Gennadij [26K]

Answer:

This is not a real question rephrase

Step-by-step explanation:

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3 years ago
Question in picture<br> correct answer marked brainliest
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C because you need to use the formula and then calculate
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