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8_murik_8 [283]
3 years ago
5

Which of the following is the equation for a circle with a radius of r and center at (h,v)

Mathematics
2 answers:
Lorico [155]3 years ago
6 0
Are there any answer choices
enyata [817]3 years ago
6 0

Answer:

(x – h)² + (y – v)² = r².

Step-by-step explanation:

Given  : A circle with a radius of r and center at (h,v).

To find : which of the following is the equation for a circle .

Solution : We have given radius = r center = ( h ,v) .

Standard form of circle : (x – h)² + (y – k)² = r².

Where, center ( h ,k ) ,radius = r.

On plugging the values in standard equation

(x – h)² + (y – v)² = r².

Therefore, equation of circle (x – h)² + (y – v)² = r².

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Answer:

y=x-7

Step-by-step explanation:

Slope of the line is (-5+6)/(2-1)=1. Equation of the line is y=x-7

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2 years ago
The student body President of a high school claims to know the names of at least 1000 of the 1800 students at the school. To tes
hoa [83]

Answer:

The 99% confidence interval for p in this case is (0.3317, 0.5883).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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n = 100, \pi = \frac{46}{100} = 0.46

99% confidence level

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The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.46 - 2.575\sqrt{\frac{0.46*0.54}{100}} = 0.3317

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.46 + 2.575\sqrt{\frac{0.46*0.54}{100}} = 0.5883

The 99% confidence interval for p in this case is (0.3317, 0.5883).

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Answer:

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Step-by-step explanation:

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