Mathematics, 21.08.2019 02:20 sydneykated
The center of a circle is (3, -1). one point on the circle is (6,2). find the equation of the circle
Answers: 1
![\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{3}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{2})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ \stackrel{radius}{r}=\sqrt{[6-3]^2+[2-(-1)]^2}\implies r=\sqrt{(6-3)^2+(2+1)^2} \\\\\\ r=\sqrt{3^2+3^2}\implies r=\sqrt{18} \\\\[-0.35em] ~\dotfill](/tpl/images/0183/4472/1d56a.png)
![\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{3}{ h},\stackrel{-1}{ k})\qquad \qquad radius=\stackrel{\sqrt{18}}{ r}\\[2em] [x-3]^2+[y-(-1)]^2=(\sqrt{18})^2\implies (x-3)^2+(y+1)^2=18](/tpl/images/0183/4472/1c21a.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 19:30, tiwaribianca475
Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Mathematics, 22.06.2019 00:10, Ackussinglake63
What is the best estimate of the length of a football
Answers: 1
You know the right answer?
The center of a circle is (3, -1). one point on the circle is (6,2). find the equation of the circle...
Questions in other subjects:
