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2 years ago

What will be the coordinates of N after a 90° counterclockwise rotation around the origin?

Mathematics

1 answer:

USPshnik [31]2 years ago

4 0

Answer:

A. (-7,-3)

D.(-3,-7) If clockwise

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How many hundreds flats are equal to 400 tens rods

vitfil [10]

40 hundreds flats. 400 tens = 4,000. 40 hundreds also equals 4,000.

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3 years ago

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Logan genetically engineered a new type of fir tree and a new type of pine tree. The combined height of one fir tree and one pin

Serjik [45]

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2 years ago

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3 years ago

The histogram shows the distribution of hurricanes that have hit a country from 1851 through 2015, where 1 is the weakest level

aleksandrvk [35]

Answer:

a) mean = 0.2

variance = 0.0391

standard deviation = 0.198

b) The average hurricane is aprox. category 2.* (B)

Step-by-step explanation:

In order to find the mean, variance, and standard deviation, let us for a table for the data:

level x

1 0.411

2 0.278

3 0.221

4 0.080

5 0.010

Calculating the mean ( $\bar{x}$ )

$\bar{x} = \frac{x_1+x_2+x_3+x_4 + x_5}{n}\\\\\bar{x} = \frac{0.411 + 0.278 + 0.221 + 0.080 + 0.010}{5}\\\bar{x} = \frac{1}{5}\\ \bar{x} = 0.2$

∴Mean = 0.2

level x $x- \bar{x}$ $(x - \bar{x})^2$

1 0.411 0.211 0.0445

2 0.278 0.078 0.0608

3 0.221 0.021 0.000441

4 0.080 -0.12 0.0144

5 0.010 -0.19 0.0361

$\sum(x - \bar{x})^2 = 0.1562$

$variance = \frac{\sum(x - \bar{x})^2}{n-1} \\variance = \frac{0.1562}{4} \\variance = 0.0391$

standard deviation = √(variance)

Standard deviation = √(0.0391)

Standard deviation = 0.198

b) the average hurricane is aprox. category 2 (B)

8 0

3 years ago

Does 2+2=4 yes or no

ad-work [718]

Answer:

Yes

Step-by-step explanation: Add 2 and 2 together and that equals 4

6 0

3 years ago