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3 years ago

10

There are 16 colors of sweatshirts, 17 of which are cotton and 9 of which are a blend. Each one order a different color with no

repeats at random. What is the probability that the friends order only cotton sweatshirts?

1 answer:

PolarNik [594]3 years ago

6 0

Answer:

13%

Step-by-step explanation:

took all numbers add them together than divided by 3

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Based on the NYC Department of Health Community Health Survey in 2010, a 95% confidence interval for the proportion of New Yorke

g100num [7]

Answer:

With 95% confidence, at least 1,794,000 were tested for HIV within the past 12 months

Step-by-step explanation:

The lower bound of the confidence interval is 29.9%.

So, with 95% confidence, we know that at least 29.9% of the New York population tested for HIV.

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With 95% confidence, at least 1,794,000 were tested for HIV within the past 12 months

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3 years ago

A central angle of a circle measures 1.5 radians. If the radius of the circle is 3 cm, what is the area of the related sector?

soldi70 [24.7K]

Answer:

Option B. $6.75\ cm^{2}$

Step-by-step explanation:

we know that

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=3\ cm$

substitute

$A=\pi (3^{2})=9 \pi\ cm^{2}$

Remember that

$2\pi$ radians subtends the complete circle of area $9 \pi\ cm^{2}$

so

by proportion

Find the area of the related sector for a central angle of $1.5$ radians

Let

x------> the area of the related sector

$\frac{9 \pi}{2\pi}\frac{cm^{2}}{radians} =\frac{x}{1.5}\frac{cm^{2}}{radians}\\ \\x=9*1.5/2\\ \\x= 6.75\ cm^{2}$

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3 years ago

Of the following points, name all that lie on the same horizontal line?

ArbitrLikvidat [17]

I just graphed all 4 and didn’t see where any are on the same horizontal line. I might be missing something.

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