3 years ago

This is a really hard question

Mathematics

2 answers:

mash [69]3 years ago

8 0

Answer:

The answer is in the photo hope it helps

Step-by-step explanation:

Anastasy [175]3 years ago

5 0

Answer:

D. 4x - 6

Step-by-step explanation:

f(x) = 4x - 2
f(x - 1) = 4(x - 1) - 2 = 4x - 4 - 2 = 4x - 6

Correct option is D

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lapo4ka [179]

Answer:

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3 years ago

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Answer:

20 Outcomes.

Step-by-step explanation:

A-1 A-2 A-3 A-4

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2 years ago

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Step-by-step explanation:

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Hunter-Best [27]

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3 years ago

A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a

TEA [102]

Answer: Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

$\mu_x= np$

$\mu_x= 100\times 1/5$

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Now, the standard deviation, $\sigma_x= \sqrt{n\times p\times (1-p)}$

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$\sigma_x= \sqrt{16}$

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Thus, First option is correct.

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3 years ago