3 years ago

Which ordered pair describes a point that is located 4 units to the left of the origin and 2 units below the x-axis?

Mathematics

1 answer:

Over [174]3 years ago

7 0

Answer:

(-4,2)

Step-by-step explanation:

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The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the

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Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and $\hat{p}$ be the sample proportion .

As per given question , we have

$p=0.14\\\\ \hat{p}=0.13\\\\ n=478$

z-score : $\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

$z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63$

The required probability ( using z-table ):-

$P(z$

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

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3 years ago

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Ymorist [56]

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Step-by-step explanation:

factor using the x-box method

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The square of a number is 3 less than four times the number. Which values could be the number? 0 0 -3 O 1

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3 and/or 1.

Step-by-step explanation:

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Use the table from problem 1 to complete this problem.

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Step-by-step explanation:

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Hãy giải phương trình bậc nhất 7-2x=22-3x

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Answer:

7-2x=22-3x

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