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Ivenika [448]
3 years ago
5

write in complete standard form then give the center and radius of each circle and graph the equation x2+y2-4x-12y-9=0

Mathematics
1 answer:
kakasveta [241]3 years ago
8 0
Standard form;

(x - 2)² + (y - 6)² = 49

the center-radius form of the circle equation is in this format;

(x - h)² + (x - k)² = r²

so the center of the circle is; (2, 6)
so the radius of the circle is; 7

hope that helps, God bless!
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The fractions 1/4,1/2,3/12 and are shown below
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the first one

Step-by-step explanation:

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If the center of a circle is<br> (-5,8) and a point on the circle is (-5, -4) What is the radius?
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Answer:

The radius is 12.

Step-by-step explanation:

You're given the center and a point on the circle. The point and the center both have an x-coordinate of -5, so there is no horizontal distance between them. The distance is only in the vertical direction. The distance from 8 to -4 is 12. Since this is the distance from the center to a point on the circle, this equals the radius.

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3 years ago
12. A flat, square roof needs a square patch in the corner to seal a leak. The side length of
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Answer:

Step-by-step explanation:

Area of the good part= area of whole roof - area of bad part

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Area of a square =length²

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A= {(x+12)(x+12)} - x²

A = (x²+12x+12x+144) -x²

Open the bracket and rearrange the equation

A= x²-x²+24x+144

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Answer:

The probability of obtaining a result equivalent to or greater than what was the truly observed value of the test statistic is 0.001.

Step-by-step explanation:

The researcher can use a one sample <em>z</em> test to determine whether his claim is correct or not.

The hypothesis to test whether the mean BMI is more than 25.0, is defined as:

<em>H₀</em>: The mean BMI is not more than 25.0, i.e. <em>μ </em>≤ 25.0.

<em>Hₐ</em>: The mean BMI is more than 25.0, i.e. <em>μ </em>> 25.0.

The test statistic is defined as:

z=\frac{\bar x-\mu}{\sigma/\sqrt{n}}

The <em>p</em>-value of the test is,

<em>p</em> = 0.001.

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The <em>p</em>-value of 0.001 indicates that the probability of obtaining a result equivalent to or greater than what was the truly observed value of the test statistic is 0.001.

As the <em>p</em>-value is very small, the null hypothesis will be rejected at any level of significance.

Thus, concluding that the mean BMI of adult Canadians is more than 25.0.

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3 years ago
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