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Veseljchak [2.6K]
3 years ago
8

Need help with problem 20 and 22.

Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0
20 is permutation
22 is counting principle
Hope it help.
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NEED HELP ASAPPP!!!! Get brainlist!
tangare [24]

Answer:

394.9 cm

Step-by-step explanation:

The formula for a cone's surface area is A = π r ( r + √r^2 + h^2 ).

r = radius

h = height

The Pythagorean theorem, a^2 + b^2 = c^2, will be needed to find the height.

Plug in the values.

a(unknown)^2 + 6^2 = 15^2

A + 36 = 255

255 - 36 = 189

√189 ≈ 13.7

Surface area formula, plug in the values.

A = 3.14 × 6 ( 6 + √6^2 + 13.7^2 )

*PEMDAS*

A = 3.14 × 6 ( 6 + √36 + 187.69 )

A = 3.14 × 6 ( 6 + √223.69 )

A = 3.14 × 6 ( 6 + 14.95 )

A = 3.14 × 6 ( 20.96 )

A = 3.14 × 125.76

A = 394.8864

*round to nearest tenth*

A = 394.9 cm

Hope this helps! :)

8 0
3 years ago
You look at real estate ads for houses in Naples, Florida. There are many houses ranging from $200,000 to $500,00 in price. The
cricket20 [7]

Answer:

c) skewed to the right.

Step-by-step explanation:

We need to remember that is a distribution is skewed to the right then we have the following condition satisfied:

Mode< Median

And if is skewed to the left then we have:

Mean

If the distribution is symmetric we need to satisfy:

Mean = Median=Mode

For this case since we have most of the values between 200000 and 500000 when we put atypical values like 15000000 that would affect the sample mean and on this case the sample mean would larger than the sample median because the median is a robust measure of central tendency not affected by outliers.

So for this special case we can say that the Mean>Median. And probably the median would be higher than the mode so then we can conclude that the best answer for this case would be:

c) skewed to the right.

5 0
3 years ago
Y = -2x + 13 when x = 6
elena-14-01-66 [18.8K]

Answer: 1

Work: After plugging in the 6 in the X, the new equation is -2(6) + 13. After doing the multiplication of -2 and 6, you get -12. Add -12 + 13, and the answer (Or y) equals 1.

<em>I hope this helps, and Happy Holidays! :)</em>

6 0
3 years ago
Read 2 more answers
Daniel used the formula to find the area of the following special trapezoid. His work is shown. Identify his error and correct i
Mamont248 [21]

Answer:

Step-by-step explanation:

CSYJDKUFTIGY.,JVCMHFXNDZBFREGAHTSJRDYKTHMCXGNZDFHJYDKUTFLCG,JHFMXJZDSRUTSIDFOULVGCFK

6 0
3 years ago
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How to find the surface area of a cylinder
Finger [1]

Answer:

measure it

Step-by-step explanation:

Greg a tape measure and measure it

4 0
3 years ago
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