Mathematics, 25.07.2019 15:00, adkinsryan72
Write the equation of the circle with center (−1, −3) and (−7, −5) a point on the circle.
Answers: 1
![\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~ -1 &,& -3~) % (c,d) &&(~ -7 &,& -5~) \end{array}\\\\\\ d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ r=\sqrt{[-7-(-1)]^2+[-5-(-3)]^2}\implies r=\sqrt{(-7+1)^2+(-5+3)^2} \\\\\\ r=\sqrt{(-6)^2+(-2)^2}\implies r=\sqrt{40}\\\\ -------------------------------](/tpl/images/0131/5029/3898b.png)
![\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{-1}{ h},\stackrel{-3}{ k})\qquad \qquad radius=\stackrel{\sqrt{40}}{ r} \\\\\\\ [x-(-1)]^2+[y-(-3)]^2=(\sqrt{40})^2\implies (x+1)^2+(y+3)^2=40](/tpl/images/0131/5029/5d2fd.png)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 15:40, chaparro0512
If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes
Answers: 3
Mathematics, 21.06.2019 17:00, ayoismeisalex
Describe what moves you could use to create the transformation of the original image shown at right
Answers: 1
Mathematics, 21.06.2019 18:00, reinaelane77
Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?
Answers: 2
Mathematics, 21.06.2019 21:00, taylordalton93
Factor the trinomial below. 12x^2 - 32x - 12 a. 4(3x+3)(x-1) b. 4(3x+1)(x-3) c. 4(3x+6)(x-2) d. 4(3x+2)(x-6)
Answers: 2
Do you know the correct answer?
Write the equation of the circle with center (−1, −3) and (−7, −5) a point on the circle....
Questions in other subjects:
History, 09.04.2021 17:20
Mathematics, 09.04.2021 17:20
World Languages, 09.04.2021 17:20
Mathematics, 09.04.2021 17:20
Mathematics, 09.04.2021 17:20
