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Lena [83]
3 years ago
14

Write the equation of a circle whose center is at the origin and contains the point (2, 3).

Mathematics
1 answer:
Ivanshal [37]3 years ago
4 0

Answer:

x²+y²=13

Step-by-step explanation:

any circle with center at (0,0)

is of the form

x²+y²=r²

find out r²

r² = (2²+3²)=13

so the answer

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The Answer is <u>A. 3. :D</u>

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Find the mean, the median, and all modes for the data in the given frequency distribution. (Round your answers to one decimal pl
kvasek [131]

Answer: Mean = 7.8

              Median = 9

             Mode = 2,9

Step-by-step explanation: <u>Mean</u> is the average value of a data set. Mean from a frequency table is calculated as:

E(X)=\frac{2(10)+3(9)+9(10)+11(7)+12(3)+15(4)+16(3)}{10+9+10+7+3+4+3}

E(X) = 7.8

Mean for the given frequency distribtuion is 7.8.

<u>Median</u> is the central term of a set of numbers. Median in a frequency table is calculated as:

1) Find total number, n:

n = 10 + 9 + 10 + 7 + 3 + 4 + 3 = 46

2) Find position, using: \frac{n+1}{2}

\frac{n+1}{2}=\frac{47}{2} = 23.5

Median is in the 23.5th position.

3) Find the position by adding frequencies: for this frequency distribution, 23.5th position is 9

Median for this frequency distribution is 9.

<u>Mode</u>  is the number or value associated with the highest frequency.

In this frequency distribution, 2 and 9 points happen 10 times. So, mode is 2 and 9.

Mode for this distribution is 2 and 9.

7 0
3 years ago
Find the perimeter of the figure to the nearest hundredth.
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Answer:

50.28 inches

Step-by-step explanation:

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C=2*3.142*9

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is the median for both of them .

Step-by-step explanation:

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Answer:

The second one

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The difference between 7 and 4 is 3

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30 times 7 = 210

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