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Zinaida [17]
2 years ago
5

The diameter of a circle is 6 centimeters. Calculate the circumference of the circle.

Mathematics
1 answer:
artcher [175]2 years ago
7 0

Answer:

2πr

Step-by-step explanation:

Figure out the radius by halfing the diameter which will be 3. Then, use the formula to solve the question.

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  • 36/7 ft³ or 5 1/7 ft³

Step-by-step explanation:

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What is the volume?<br><br> 7 cm<br> 5 cm<br> 8 cm<br><br> cubic centimeters
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Step-by-step explanation:

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(4.70x10^3)+(8.6x10^5)
Natali [406]

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3 years ago
In a simple random sample of 300 boards from this shipment, 12 fall outside these specifications. Calculate the lower confidence
Lyrx [107]

Answer:

The 95% confidence interval for the percentage of all boards in this shipment that fall outside the specification is (1.8%, 6.2%).

Step-by-step explanation:

In a random sample of 300 boards the number of boards that fall outside the specification is 12.

Compute the sample proportion of boards that fall outside the specification in this sample as follows:

\hat p =\frac{12}{300}=0.04

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

CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

The critical value of <em>z</em> for 95% confidence level is,

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

*Use a <em>z</em>-table.

Compute the 95% confidence interval for the proportion of all boards in this shipment that fall outside the specification as follows:

CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\=0.04\pm1.96\sqrt{\frac{0.04(1-0.04)}{300}}\\=0.04\pm0.022\\=(0.018, 0.062)\\\approx(1.8\%, 6.2\%)

Thus, the 95% confidence interval for the proportion of all boards in this shipment that fall outside the specification is (1.8%, 6.2%).

6 0
3 years ago
Which point is a solution of x^2 + y^2 &gt; 49 and y ≤ –x^2 – 4 ?
Inga [223]

Answer:

C. 1, -9

Step-by-step explanation:

I just put it on desmos

3 0
2 years ago
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