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Leona [35]
3 years ago
5

Consider the numbers 0, 10, 20, 30, and 40. Multiply each by 4 and compare the result to 60 to determine into which of the follo

wing intervals the answer to the question "What number can you multiply by 4 and then add 8 to the product to get 60?" should fall.
Select the interval into which the answer should fall.

a) 0 to 10
b) 10 to 20
c) 20 to 30
d) 30 to 40
Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
3 0

Answer:

b) 10 to 20

Step-by-step explanation:

You have to multiply each of the given numbers by 4, and add 8 to that result.

So:

  • 0*4+8  = 8
  • 10*4+8 = 48
  • 20*4+8 = 88
  • 30*4+8 = 128
  • 40*4+8 = 168

And 60 is between the result of <u>10 and 20</u>, so that's the interval you have to select.

<em>The correct answer is b) 10 to 20</em>

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Eric's class consists of 12 males and 16 females. If 3 students are selected at random, find the probability that they
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Answer:

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P(E) = 0.067 = 6.71%

Step-by-step explanation:

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n(M) = 28C_{3} = \frac{28!}{(28-3)!3!} =\frac{28 X 27 X 26}{3 X 2 X 1 } = 3,276

Number of ways of choosing 3 students From all males

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The probability that all are male of choosing '3' students

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P(E) =  \frac{12 C_{3} }{28 C_{3} } = \frac{220}{3276}

P(E) = 0.067 = 6.71%

<u><em>Final answer</em></u>:-

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

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>

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