The center of a circle is at the origin. An endpoint of a diameter of the circle is at (-3, -4). How long is the diameter of the circle?

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Asked 10/18/2013 11:41:29 AM

Updated 6/30/2014 9:04:01 PM

8 Answers/Comments

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Flagged by yeswey [6/30/2014 9:04:01 PM]

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Question

Asked 10/18/2013 11:41:29 AM

Updated 6/30/2014 9:04:01 PM

8 Answers/Comments

This conversation has been flagged as incorrect.

Flagged by yeswey [6/30/2014 9:04:01 PM]

Rating

8

The center of a circle is at the origin. An endpoint of a diameter of the circle is at (-3, -4). The radius of the circle is the distance between the points (-3, -4) and the origin (0, 0) which is radius = sqrt (3^2 + 4^2) = 5. The diameter of the circle = 2(5) = 10

Added 6/30/2014 8:45:59 PM

This answer has been confirmed as correct and helpful.

Confirmed by yumdrea [6/30/2014 9:11:42 PM]

8

The equation of a circle whose center is at the origin and whose radius is 16 is x^2 + y^2 = 256.

Added 6/30/2014 8:46:52 PM

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Confirmed by yumdrea [6/30/2014 9:11:43 PM]

8

The distance between the points (2, 5) and (5, 7) is sqrt [(7-5)^2+(5-2)^2] = sqrt (4+9) = sqrt 13.

Added 6/30/2014 8:52:37 PM

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Confirmed by yumdrea [6/30/2014 9:11:44 PM]

8

The endpoints of the diameter of a circle are (-7, 3) and (5, 1). The center of the circle is (-1, 2)

Added 6/30/2014 8:53:38 PM

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Confirmed by yumdrea [6/30/2014 9:11:46 PM]

8

The quadratic equation (x - 3)^2 = 0 in general form is x^2 - 6x + 9 = 0.

Added 6/30/2014 8:58:30 PM

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Confirmed by yumdrea [6/30/2014 9:11:49 PM]

8

The equation 2x^2 - 4x + 6 = 1 in general form is 2x^2 - 4x + 5 = 0, the value of "c" is 5.

Added 6/30/2014 8:59:58 PM

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Confirmed by yumdrea [6/30/2014 9:11:50 PM]

8

The value of "c" in the quadratic equation 3x^2 + 5x + 7 = 0 is 7.

Added 6/30/2014 9:01:10 PM

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Confirmed by yumdrea [6/30/2014 9:11:56 PM]

8

(5 + x)(5 - x) = 7

25 - 5x + 5x - x^2 = 7

-x^2 + 25 - 7 = 0

-x^2 + 18 = 0 which is the general form of the equation.

We can tell from the equation, a = -1, b = 0, c = 18

25 - 5x + 5x - x^2 = 7

-x^2 + 25 - 7 = 0

-x^2 + 18 = 0 which is the general form of the equation.

We can tell from the equation, a = -1, b = 0, c = 18

Added 6/30/2014 9:03:37 PM

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Confirmed by yumdrea [6/30/2014 9:11:53 PM]

Find the distance between the points (11, 4) and (10, 5). **Weegy:** 121 **User:** Find the distance between the points (13, 20) and (18, 8).
**User:** Find the distance between the points (13, 20) and (18, 8).
**User:** What is the radius of the circle whose equation is x2 + y2 = 8?
**User:** Which of the following points lies on the circle whose center is at the origin and whose radius is 5?
**User:** What number is midway between 2/3 and 1?
**User:** Find the midpoint of the line segment whose endpoints are (2.6, 5.1) and (3, 4.7).
**Weegy:** The midpoint would be (5,9).
([7+3]/2,[8+10]/2) =
(10/2,18/2) =
(5,9) **User:** What is the center of the circle that has a diameter whose endpoints are (6, -4) and (18, 10)?
**Weegy:** (12, 6) **User:** The center of a circle is (4, 6), and an endpoint of a diameter is (2, 5). What is the other endpoint of the diameter?
**Weegy:** Diameter=10.198
center=(2,6) **User:** What is the equation of a circle whose center is at the origin and whose radius is 9?
**Weegy:** x2 + y2 = r2, where r is the radius.
**User:** A circle has its center at the origin, and (5, -12) is a point on the circle. How long is the radius of the circle?
**Weegy:** Using pythagors, radius = nsqrt (12^2 + 5^2) = sqrt (169) = 13 **User:** There is a direct path from Gayle's house to the store. Due to construction, the direct route is closed and Gayle must travel 6 miles east and then 8 miles north in order to get to the store. How long is the direct path from Gayle's house to the store?
**Weegy:** answer is 10 miles. The lenght of the direct path from Gayle's house to the store is ten miles. **User:** Which of the following sets could be the sides of a right triangle?
**User:** What is the midpoint of the line segment whose endpoints are (-8, 12) and (-13, -2)? (More)

Question

Updated 6/28/2014 9:37:58 AM

7 Answers/Comments

The number that is midway between 2/3 and 1 is 5/6.

Added 6/28/2014 9:33:27 AM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [6/28/2014 9:34:05 AM]

The midpoint of the line segment whose endpoints are (2.6, 5.1) and (3, 4.7) is (2.8, 4.9)

Added 6/28/2014 9:35:06 AM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [6/28/2014 9:37:48 AM]

The center of the circle that has a diameter whose endpoints are (6, -4) and (18, 10) is (12, 3)

Added 6/28/2014 9:36:15 AM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [6/28/2014 9:38:00 AM]

The center of a circle is (4, 6), and an endpoint of a diameter is (2, 5). The other endpoint of the diameter is (6, 7)

Added 6/28/2014 9:37:13 AM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [6/28/2014 9:38:19 AM]

The equation of a circle whose center is at the origin and whose radius is 9 is x^2 + y^2 = 81

Added 6/28/2014 9:37:58 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [7/1/2014 9:40:15 AM]

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