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irakobra [83]
2 years ago
10

42 is the same value as​

Mathematics
1 answer:
Nadya [2.5K]2 years ago
7 0

Answer:

42

Step-by-step explanation:

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Which expression is equal to sec x° multiplied by cot x°?
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Sec x is equal to 1/cosx, cot x is equal to cosx/sinx. cos x cancels, and you are left with 1/sinx. this is equal to cscx. Cosecant is : hypotenuse / opposite, so the answer is **D**
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3 years ago
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A doctor is measuring the mean systolic blood pressure of female students at a large college. Systolic blood pressure is known t
Nana76 [90]

Answer:

The correct option is (b).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

CI=\bar x\pm z_{\alpha/2}\times\frac{SD}{\sqrt{n}}

The confidence interval for population mean can be computed using either the <em>z</em>-interval or <em>t</em>-interval.

The <em>t</em>-interval is used if the following conditions are satisfied:

  • The population standard deviation is not known
  • The sample size is large enough
  • The population from which the sample is selected is normally distributed.

For computing a (1 - <em>α</em>)% confidence interval for population mean , it is necessary for the population to normally distributed if the sample selected is small, i.e.<em>n</em> < 30, because only then the sampling distribution of sample mean will be approximated by the normal distribution.

In this case the sample size is, <em>n</em> = 28 < 30.

Also it is provided that the systolic blood pressure is known to have a skewed distribution.

Since the sample is small and the population is not normally distributed, the  sampling distribution of sample mean will not be approximated by the normal distribution.

Thus, no conclusion can be drawn from the 90% confidence interval for the mean systolic blood pressure.

The correct option is (b).

5 0
2 years ago
Which could be the area of one face of the rectangular prism? Select three options.
Anit [1.1K]

Answer:

24 cm squared

44 cm squared

66 cm squared

Step-by-step explanation:

6(4)= 24

11(4)= 44

11(6)= 66

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3 years ago
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35

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Which of the following inequalities matches the graph (1 point)
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Answer:

D

Step-by-step explanation:

The correct inequality is not listed

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