# Find the equation of the circle with center on the line x-2y+2=0 and which touchesboth positivex and positive y axes

130,666 results
1. ## GEOMETRY

The diameter of a circle has endpoints P(–10, –2) and Q(4, 6). a.Find the center of the circle. b.Find the radius. If your answer is not an integer, express it in radical form. c.Write an equation for the circle.

2. ## Geometry

Which one of these is NOT a step used when constructing an inscribed square using technology? A. Create a circle using the center with given points tool. B. Connect the points with a line through the center of the circle. C. Mark the points of intersection

asked by Amy on January 20, 2015
3. ## algebra

A few more question Id like for someone to check please. 1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0 vertex (4,-5) focus (0,7) directrix y=-12 2) write an equation of a circle with given center and

asked by lee on February 22, 2013
4. ## GEOMETRY INSCRIBED ANGLES MULTIPLE CHOICE QUESTION

segment BC is tangent to circle A at B and to circle D at C. (Not drawn to scale) AB=10 BC=25 and DC=3. Find AD to the nearest tenth. Hint: Draw an auxiliary line from D to segment BA. {There are two circles, the larger one has point A in the center and a

asked by aYaMe ;) on May 15, 2012
5. ## math

ABCDE is a circle with centre O. The diameter, AC, is extended to the point F so that CF = 16 cm. The line BF is the tangent to the circle at B and FDE is a straight line such that FD = 18 cm and chord DE = 14 cm (D and E are points of intersection of the

asked by Valeriya on January 25, 2019
6. ## math

A segment with endpoints C(-3, 3)and D(7, 3) is the diameter of a circle. a. What is the center of the circle? b. What is the length of the radius? c. What is the circumference of the circle? d. What is the equation of the circle?

asked by Joshua on March 21, 2018
7. ## NEED MAJOR HELP! *QUADRATIC EQUATIONS*

Write the equation for the circle with center at (- 8, - 6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x-8)² + (y - 6)² = 100 Find the standard equation for the circle with center on the positive x-axis and passing through the

8. ## geomtry

A diameter of a circle has endpoints P(-10,2) and Q(4,6) a. find the center of the circle. b. find the radius of your answer is not an interger express in radical form c. write an equation for the circle

asked by gavin on May 22, 2015
9. ## math

-a circle with center at the point O(0,0) also has the point P(-2,3) on it. The equation of this circle is? and a second question: -A circle has a center of square root 5. The equation of this circle is? Please help me.

asked by Garrick on October 9, 2008
10. ## geometry

Two circles of equal radius intersect each other such that each circle passes through the center of the other circle. Find the equation for the perimeter of this figure.

asked by Leah on February 1, 2011
11. ## Math

I have a question my brother asked me but I need a math expert. You have two interlocking circles and the radius of circle B goes through the center of circle A and of course the radius of circle A goes through the center of circle B. The radius of each

asked by DrBob222 on June 25, 2013
12. ## Math (geometry)

Line l is tangent to circle O at point P(3,4) where the center is located at (0,0). a. Find the radius of the circle. (I got 4) b. Give an equation of the circle. (I got x^2+y^2=16) c. Find the slope of line l. d. Give an equation of line l.

asked by Emily on April 30, 2008
13. ## sir steve reiny damon bob maths help steve!!!

Point P(2,1) and Q(4,-5) lie on a circle. If line 2x-y-13=0 is a tangent to the circle at Q, what is (*) Coordinates of the center of the circle; (*) Equation of the circle. (*) Sketch out your circle. Step

asked by yourim on April 28, 2017
14. ## math

Find the equation of a circle with radius 4 units ,whose center lies on the line 13x+4y=32 and which touch the line 3x+4y+28= 0.

asked by kishor on January 3, 2016
15. ## Math

The equation 2x^2+2y^2+x+4y+2c=0 represents a circle.(let's name it S1) 1)Find the values of a,b and and show that c

asked by Shenaya on July 31, 2017
16. ## math

can u help this the qustion is : A circle passes through the points (1,4)&(5,0) and its centre lies on the line x+y-3=0.Find (i) the equation of the circle and it parametric equations . (ii) the centre,diameter and area of the circle . (iii) the equation

asked by steev on December 28, 2011
17. ## steev

can u help this the qustion is : A circle passes through the points (1,4)&(5,0) and its centre lies on the line x+y-3=0.Find (i) the equation of the circle and it parametric equations . (ii) the centre,diameter and area of the circle . (iii) the equation

asked by math on December 28, 2011
18. ## math

) An object is moving on a straight line which is 15 centimeters away from the center of a circle of radius 28 centimeters. (Both the circle and the straight line are on the same plane.) A source of light is located on the line drawn from the center of the

asked by price on April 23, 2016
19. ## math

Let the equation of a circle be x^2+y^2-14x+8y+56 a. Find the standard form of the circle b. Find the center of the circle c. Find the radius of the circle

asked by Anonymous on June 4, 2015
20. ## Math (Pre Cal)

Hi, I am studying for a precalculus quiz and I do not understand this hw problem: "The tangent line to a circle may be defined as the point that intersects a circle in a single point... If the equation of the circle is x^2+y^2=r^2 and the equation of the

asked by Dealie on August 28, 2010
21. ## Math

write an equation which must be true if the line from p(x,y) to a(25,0) is perpendicular to the line from P(x,y) to the center of the circle x^2+y^2=400

asked by Matt on March 23, 2013
22. ## Geometry

The diameter of a circle has endpoints P(- 10, - 8) ) and Q(4, 4) . a. Find the center of the circle. bFind the radius. If your answer is not an integer, express it in radical form. . Write an equation for the circle.

asked by Amber on May 4, 2020
23. ## mathematics

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of

asked by Jossie on March 21, 2013
24. ## maths

1) Circle centre (7,-2) passes through (-2,10). Calculate radius and find equation of circle. 2) AB is diameter of circle A(9,5) B(-1,-7). Find equation of circle mid point. I know i have to use the eqn (x1+x2)/2 and (y1+y2)/2 3) Find the equation of

asked by Anonymous on February 24, 2008
25. ## Math

Write the equation of the circle with center (-2,-3) and tangent to the line 2x+5y=10.

asked by Hannah on January 25, 2009
26. ## Analytic Geometry

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0 .

asked by John on May 5, 2013
27. ## mathematics

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of

asked by Jossie on March 21, 2013
28. ## mathematics

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of

asked by Jossie on March 21, 2013
29. ## mathematics

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of

asked by Jossie on March 21, 2013
30. ## physics

An object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose that the radius of the

asked by Mary on February 21, 2007
31. ## Algebra

Find the equation for the circle with center (1,2) and passing through (-4,-3). Write the equation for the circle.

asked by Jason on August 26, 2016
32. ## college algebra-plz help

a circle has the equation 3(x-5)^2_3y^2=12. Find the center and radius and graph the circle. find the intercepts, if any. plz show work

asked by James on December 9, 2012
33. ## Alg2

The tangent to a circle may be defined as the line that intersects the circle in a single point, called the point of tangency. If the equation of the circle is x^2 + y^2 = r^2 and the equation of the tangent line is y = mx + b, show r^2(1 + m^2) = b^2

asked by Allen on October 22, 2009
34. ## College Algebra

Write the equation of a circle in standard Find the center, radius intercepts and graph the circle. .........x^2+y^2-12x-4y+36=0

asked by Mountain Scott on August 24, 2012
35. ## Algebra

2. Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x2+y2+8x+2y+8=0

asked by Jeannette on December 2, 2013
36. ## math

Find the equation of the circle with center on the line x-2y+2=0 and which touchesboth positivex and positive y axes.

asked by Anonymous on March 4, 2015
37. ## Math

I have a series of questions that I did. They lead up to the last question I can't solve. Could you check my math and help me with the last question? Thanks! a) Let a be the point (2,3). Compute the distance from Origin 0 to A answer: a^2 + b^2 = c^2 3^2 +

asked by Shane on October 14, 2010
38. ## Math (urgent)

the equation x^2+y^=25 describes a circle with center at the origin and radius 5. The line y=x-1 passes through the circle. Using the substitution method, find the points at which the circle and line intersect. a) (4,3) and (-4,-3) b) (3,4) and (-3,-4) c)

asked by Max on September 7, 2016
39. ## calc

standard equation of circle concentric with X^2+Y^2-2X-8Y+1=0 and tangent to line 2X-Y=3 Complete the squares to find the center of the circle. X^2+Y^2-2X-8Y+1=0 (x-1)^2+(y-4)^2 - 16 =0 The center is (1,4) and the radius for the given circle is 4. Now find

asked by Melba on September 26, 2006
40. ## maths-urgently needed

find the equation of circle if the line 2x - y +1 = 0 touches the circle at the point (2,5) and the center of the circle lies on the line x+y -9 =0

asked by Anonymous on February 14, 2013
41. ## MATH

How do i find the center of a circle using 3 points. Also need to find the radius and the equation of the circle.... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which

asked by B on September 25, 2014
42. ## Algebra II

In this set of eight problems, we have to match each equation with the correct description of its graph. However, these are test corrections I'm doing and I do not have the previous multiple choice answers so I can deduct from it, but can someone help me?

asked by Emily on February 4, 2009
43. ## Geometry

Within an orthonormal system consider points A(1,4) B(5,1) C(4,8) (a)Calculate the angle ABC (b)Show that 3x+4y-19=0 is an equation for line L which passes through A and B (c)Find a vector equation for line L (d)(i)give an equation for the circle with the

asked by Anonymous on May 4, 2008
44. ## trig question

On a unit circle, sin x = square root 3 over 2, with center O. Vertical line from top to center of circle is PO. Horizontal line from middle to right of circle is OE. Another vertical line of AB is parallel to PO. And radius of circle (line from O to A) is

asked by Anonymous on April 28, 2012
45. ## calc

standard equations of circles that have centers on line 5x-2y=-21 and are tangent to both axis. Any ideas?? First express the line as in point slope form y=(5/2)x - 21/2 The center must be on the line, so it is a point expressed as (x,(5/2)x - 21/2) In

asked by Melba on September 26, 2006
46. ## trig question

NEW DIAGRAM: On a unit circle, sin x = square root 3 over 2, with center O. Vertical line from top to center of circle is PO. Horizontal line from middle to right of circle is OE. Another vertical line of AB is parallel to PO. And radius of circle (line

asked by Anonymous on April 28, 2012

How to find the center and radius of a circle using 3 points... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the

asked by B on September 25, 2014
48. ## math

a circle is tangent to the y-axis at y=3 and has one x-intercept at x=1 a) what's the other x-intercept b) what's the equation i have no clue how to solve this! You know that the center of the circle is somewhere in the line y = 3, denote the x-coordinate

asked by Anonymous on August 4, 2007
49. ## Geometry

I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I

asked by Aaron on June 3, 2009
50. ## Geometry

I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I

asked by Aaron on June 3, 2009
51. ## Analytic Geometry

Find the equation of the circle with radius sqrt2 tangent to the line x+y=3 and having its center on the line y=4x

asked by Lea on January 29, 2013
52. ## college algebra

1. for the given slope-inntercept equation of the line with the following properties parallel to the line y=7; containing the (-3,5) 2. write the equation of the circle in standard form. find the center, radius, intercepts. x^2+y^2+16x-18y+145=25 please

53. ## Analytic Geometry

Find the equation of the circle, with radius 1, tangent to the line 3x+4y=5 and having its center on the line x+2y=0

asked by xavier on January 31, 2013
54. ## Math

The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) State the equation of the

asked by Kate on June 24, 2009
55. ## Calculus

Find the equation of a circle with center C(1,6) and tangent line x-y-1=0.

56. ## geometry

A circle with center at (2,0) and a radius of 4 is intersected by a line whose slope is 1 and whose y intercept is 2. Write the equation of the line and write the equation of the circle in standard form. i know that the center-radius form is (x-2)^2 +

asked by Anonymous on January 2, 2011
57. ## Geometry

Help please I'm stuck in this 3 problems. 1.Find the center and radius of the circle (x - 1)2 + y2 = 36 2.Find the distance between the two points. Round an approximate result to the nearest hundredth(8, 0) and (0, 6) 3.Give the equation of the line that

asked by Lisa on September 6, 2009
58. ## Math

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of

asked by Hannah on October 6, 2010

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of

asked by Hannah on October 6, 2010
60. ## math

find the equation of the circle having center (3,4) & touches the line 5x+12y+11=0

asked by himanshu on October 25, 2015
61. ## MATH

asked by thealmighty_.k on January 28, 2019
62. ## Math

asked by thealmighty_.k on January 23, 2019
63. ## technical drawings

a circle of diameter 80mm and a line BC. The ratio of the circle to the line BC is 7:5. what is the true length of the line from the center of the circle.2. what is the actual diamter of the cirlce. thanks

asked by hendrix on May 5, 2016
64. ## MATH NEED HELP

asked by theeeeylovekikii on January 23, 2019
65. ## math_pre-calc

Find the equation of a circle that passes through the points (6,3) ans (-4,-3) and whose center lies on the line y=2x-7

asked by Lenna on March 11, 2010
66. ## Math~Geometry

Find the circumference of the circle. Use 3.14 or pi. Round to the nearest unit. The circle has a line going through the center and under the line it says: 13 cm. A 16 B 41* C 20 D 62

asked by Mr. Skill's101.4 on March 29, 2018
67. ## Geometry

A diameter of a circle has endpoints P(-10, -2) and Q(4, 6). a. Find the center of the circle. b. Find the radius. If your answer is not an integer, express it in radical form. c. Write an equation for the circle. Can someone explain how to do this?

asked by Ember Lovet on May 16, 2018
68. ## geometry

This one is confusing me. please help The diameter of a circle has endpoints P(–10, –2) and Q(4, 6).Find the center of the circle.Find the radius. If your answer is not an integer, express it in radical form. Write an equation for the circle. Thanks

asked by ryan on January 12, 2012
69. ## Geometry

A diameter of a circle has endpoints P(-10, -2) and Q(4, 6). a. Find the center of the circle. b. Find the radius. If your answer is not an integer, express it in radical form. c. Write an equation for the circle Can someone please help me by answering

asked by Ti on April 16, 2020
70. ## Math

write an equation which must be true if the line from p(x,y) to a(25,0) is perpendicular to the line from P(x,y) to the center of the circle x^2+y^2=400

asked by Matt on March 23, 2013
71. ## math

Write an equation of a circle with the center (-5,-4) and radius 6. The general equation for a circle is (x-a)^2 + (y-b)^2 = r^2, where r is the radius of the circle and (a,b) are the (x,y) coordinates of the center. Make the appropriate substitutions and

asked by James on May 7, 2007
72. ## maths

1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. Find the derivative of 2^x^2+log2(2x^2-1) 3. Use DeMeoivre's theorem to simplify the following expressions [(Cos pie/3 + isin pie/3)^5 (cos 2pie/3- isin 2pie/3)^4]/ (cos pie/6 - isin

asked by muselitata on February 19, 2013
73. ## maths

1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. Find the derivative of 2^x^2+log2(2x^2-1) 3. Use DeMeoivre's theorem to simplify the following expressions [(Cos pie/3 + isin pie/3)^5 (cos 2pie/3- isin 2pie/3)^4]/ (cos pie/6 - isin

asked by muselitata on February 19, 2013
74. ## Math

The point P = (4, 3) lies on the circle x2 + y2 = 25. Find an equation for the line that is tangent to the circle at P. This line meets the x-axis at a point Q. Find an equation for the other line through Q that is tangent to the circle, and identify its

asked by Matilda on April 20, 2017
75. ## Math

The point P = (4, 3) lies on the circle x2 + y2 = 25. Find an equation for the line that is tangent to the circle at P. This line meets the x-axis at a point Q. Find an equation for the other line through Q that is tangent to the circle, and identify its

asked by Matilda on April 20, 2017
76. ## Algebra

1.How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) ? 2. The Radius of the circle? 3. Equation of circle THANKS!

77. ## College Algebra

using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3

asked by Kevin on December 15, 2011
78. ## College Algebra

using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3

asked by Kevin on December 15, 2011
79. ## Math

Use 3.14 for Ï€ to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. A circle is shown. A dashed line extends across the circle through a point at the center connecting points on opposite

asked by Billie Eilish 🖤 on May 9, 2019

Find the equation of the circle where the center is on the line 8x + 5y - 8 =0 and passing through point (2,1) and point (3,5)

asked by Mk on February 28, 2011
81. ## math

43. What is an equation of the circle that has its center at the origin and is tangent to the line y=3x 7?

asked by Shelyn Yang on February 27, 2013
82. ## Analytic Geometry

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

asked by xavier on January 31, 2013
83. ## Analytic Geometry

What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

asked by xavier on January 31, 2013
84. ## Algebra Help

How do I find the center of a circle using the points (2,8) (-4,6) (1,-1) I also found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the perpendicular bisector of the

asked by Bri on September 24, 2014
85. ## Algebra

Could you please check some of my Algebra problems please? Write the standard form of the equation of the circle with the given center and radius. 1. (-7,4);8 I got (x+7)^2 + (y-4)^2=64 2. (-7,10); square root of 17 I got (x+7)^2 + (y-10)^2=17 3. (0,0); 2

asked by Soly on September 10, 2007
86. ## Equations of a Circle

Write the standard for of the equation of the circle that passes through the points at (0,8),(8,0),and (16,8). Then identify the center and radius of the circle. I have r=8, center=(8,8). What now?

asked by Some1 Help Me Plz on April 21, 2012
87. ## maths

Given that the equation of the circle is x^2 + y^2 +2x -8y+5 =0 (i)Find the centre and radius of the circle (ii)Determine whether the line x-3y=8 is tangent to the given circle

asked by mazoe on February 27, 2012
88. ## maths

Given that the equation of the circle is x^2+y^2+2x-8y+5=0 (i)find the centre and radius of the circle (ii)Determine whether the line x-3y=8 is tangent to the given circle

asked by tembo on March 14, 2012
89. ## math

Find the standard form of the equation of the circle with the given characteristics. Center: (5, -2); point on circle: (-3, -4)

asked by mary on May 26, 2018
90. ## Math

(a) Straight line passes through the point (-2,8) and is parallel to the line x+2y=4 Slope Intercept Equation is: (b) Straight line passes through the point (-1,9) and is perpendicular to the line 5x+y=4 Slope Intercept Equation is: (c) Determine the

asked by Yin on April 12, 2015
91. ## Algebra

Find the center and radius of the circle. Equation: x^2 + (y+7)^2=4 Formula for center at the origin is x^2+y^2=r^2 Is this what I use and how do I go about this?

asked by Carrie on April 18, 2010
92. ## Math

write the equation of the circle in standard form. find the center, radius, intercepts, and graph the circle. x^2+y^2-6x-8y+25=36

asked by Rachel on May 27, 2012
93. ## college algebra

write the equation of the circle in standard form find the center radius, intercept and graph circle x^2 +y^2+8x+2y+8=0

asked by zachary on October 26, 2012
94. ## Math

The point (-4.3) lies on a circle whose center is at (2,1). Find an equation of this circle.

95. ## Algebra

The point (-1,0) lies on a circle whose center is at (-6,5). Find an equation of this circle

asked by Jennifer on May 17, 2011
96. ## Math

A court is 94ft long by 50ft wide. It has 3 circles each 12ft diameter. Two of the circles are at the free throw line and the third is at the center of the court. Within the 3rd circle is another circle with a radius of 2ft.The key is rectangular region on

asked by Kimberly on May 17, 2015
97. ## Pre-Calculus

I am having trouble with several problems: 1) Find the coordinates of the center, foci, and the vertices, and the equations of the asymptotes of the graph of the equation (x+1)^2/2 - y^2/8 =1 2) Write the standard form of the equation of the circle that is

asked by Lucy on September 27, 2008
98. ## Pre-Calculus

I am having trouble with several problems: 1) Find the coordinates of the center, foci, and the vertices, and the equations of the asymptotes of the graph of the equation (x+1)^2/2 - y^2/8 =1 2) Write the standard form of the equation of the circle that is

asked by Lucy on September 28, 2008
99. ## Circles (Conic Sections)

I have no idea how to do these problems: Find an equation of each circle. 1. Center (3,5); tangent to the x axis 2. Center (5,-3); tangent to the y axis 3. Tangent to the x axis, y axis, and the line y=5 (two answers) I just really need help understanding

asked by Amanda on April 21, 2009
100. ## pre calculus

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2-12x-4x+36=0 How on earth do I do this?

asked by sharon on March 28, 2013