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saul85 [17]
3 years ago
13

Name the property of equality that justifies the statement if a equals b then b equals a

Mathematics
1 answer:
SpyIntel [72]3 years ago
3 0
That would be the commutative property
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Pls Help the questions are on the picture
natima [27]

coronanananananannana cornananananan cornananana coronananannanan ornanananan cornananan ebola ebola ebolalalalla

Step-by-step explanation:

5 0
3 years ago
There is a bag filled with 3 blue and 4 red marbles.
tresset_1 [31]

Using the hypergeometric distribution, it is found that there is a 0.4286 = 42.86% probability of getting 2 of the same colour.

The marbles are chosen without replacement, hence the <em>hypergeometric </em>distribution is used to solve this question.

<h3>What is the hypergeometric distribution formula?</h3>

The formula is:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

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

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

In this problem:

  • There is a total of 3 + 4 = 7 marbles, hence N = 7.
  • Of those, 3 are blue, hence k = 3.
  • 2 marbles will be taken, hence n = 2.

The probability of getting 2 of the same colour is the sum of P(X = 0), which is both red, with P(X = 2), which is both blue, then:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,7,2,3) = \frac{C_{3,0}C_{4,2}}{C_{7,2}} = 0.2857

P(X = 2) = h(2,7,2,3) = \frac{C_{3,2}C_{4,0}}{C_{7,2}} = 0.1429

Hence:

p = P(X = 0) + P(X = 2) = 0.2857 + 0.1429 = 0.4286

0.4286 = 42.86% probability of getting 2 of the same colour.

You can learn more about the hypergeometric distribution at brainly.com/question/4818951

3 0
2 years ago
the population of a town increases at the rate of 1% each year today the towns population is 8500 what will the population be in
romanna [79]

Answer:

8934 (8933.58542585)

Step-by-step explanation:

8,500 (population currently) * 1.01 (1 percent) ^ 5 (years) = 8933.58542585 ≅ 8934 people.

4 0
3 years ago
Mary has completed 8 problems of her 20 question test. How much of the test has she completed in fraction form (simplity!)
allochka39001 [22]

Answer:

2/5

Step-by-step explanation:

She completed 8 out of 20 so we divide 8 by 20

8/20 can be simplified if we divide both the numerator and denominator by 4

which equals 2/5

6 0
3 years ago
Read 2 more answers
1. Are the figures below balanced or unbalanced? HELP ME PLEASE! ​
Nesterboy [21]

Answer:

it's unbalanced it's unbalanced it's unbalanced

4 0
3 years ago
Read 2 more answers
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