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-BARSIC- [3]
3 years ago
10

What angle is supplementary to EAB? (Just write the three letters. Remember the vertex needs to be in the middle.)

Mathematics
1 answer:
Kazeer [188]3 years ago
4 0

Answer:

Step-by-step explanation:

Angle BAC

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A 7-pack of frozen waffles costs 4.76. What is the unit price?
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A 7-pack of frozen waffles costs $4.80.

Step-by-step explanation:

What is the unit price, rounded to the nearest cent?

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How many regions can be found at the left side of the normal distribution curve?
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Answer: it’s c.3

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Step-by-step explanation:

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What is something definitely true about the value x ?
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It's value is less than 0

Step-by-step explanation:

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3 years ago
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4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are
Elina [12.6K]

Using the hypergeometric distribution, it is found that there is a 0.7568 = 75.68% probability that neither can wiggle his or her ears.

The people are chosen from the sample without replacement, which is why the <u>hypergeometric distribution</u> is used to solve this question.

Hypergeometric distribution:

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:

  • 1000 people means that N = 1000
  • 130 can wiggle their ears, thus k = 130
  • Two are selected, thus n = 2.

The probability that neither can wiggle his or her ears is P(X = 0), thus:

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

P(X = x) = h(0,1000,2,130) = \frac{C_{130,0}C_{870,2}}{C_{1000,2}} = 0.7568

0.7568 = 75.68% probability that neither can wiggle his or her ears.

A similar problem is given at brainly.com/question/24826394

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2 years ago
Simplify the expression-3(b-7)
oee [108]
-3(b - 7)

Multiply -3 into the parenthesis.

= -3b + 21.
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3 years ago
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