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Find the centre and radius of a circle with equation x² + y² - 6x + 8y – 11 = 0

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sharon kalunda answered the question on August 27, 2019 at 08:52

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Next: Two alloys Y and Z are each made up of zinc, tin and copper. In alloy Y, the ratio of zinc to tin is 2:5...

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Two alloys Y and Z are each made up of zinc, tin and copper. In alloy Y, the ratio of zinc to tin is 2:5... (Solved)

Two alloys Y and Z are each made up of zinc, tin and copper. In alloy Y, the ratio of zinc to tin is 2:5 and the ratio of copper to tin is 4:3. Determine the ratio, copper: zinc: tin in alloy Y.

Date posted: August 27, 2019 . Answers (1)
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Obtain the binomial expansion of (1 - 2x)⁵ and use your expansion to evaluate (0.98)⁵ correct to 5d.p. (Solved)

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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
In the figure below OAB is a triangle, OA = a, OB = b. Point M lies on AB such thatAM : MB = 1:3... (Solved)

In the figure below OAB is a triangle, OA = a, OB = b. Point M lies on AB such that AM : MB = 1:3 and N lies on OB such that OB : BN = 7: - 5. Line OM and AN intersect at X.

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Date posted: August 27, 2019 . Answers (1)
In the figure below O is the centre of the circle. A, B, C and D are points on the circumference of the circle. A,... (Solved)

In the figure below O is the centre of the circle. A, B, C and D are points on the circumference of the circle. A, O, X,C and E are on a straight line. DE is a tangent to the circle at D. Angle BOC = 48⁰ and angle CAD = 36⁰

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(i) Angle CBA.
(ii) Angle BDE.
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Date posted: August 27, 2019 . Answers (1)
The boats X, Y and Z are such that Y is 500km on a bearing of 030⁰ from X. Z is 750km from Y and... (Solved)

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Date posted: August 27, 2019 . Answers (1)
A bucket is in the shape of a frustum with a base radius 14 cm and top radius 21 cm. The height of the bucket... (Solved)

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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)
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Date posted: August 27, 2019 . Answers (1)