10 POINTS!! Made myself broke with my last two questions! The center of circle O is the origin. Circle O passes through the point (−5,

Question

10 POINTS!! Made myself broke with my last two questions!
The center of circle O is the origin. Circle O passes through the point (−5, −12). What is the length of the radius of circle O?
A. √ 17
B. 7
C. √ 119
D. 13

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Skylar 2 weeks 2021-09-27T10:12:38+00:00 1 Answer 0

Answers ( )

    0
    2021-09-27T10:14:29+00:00

    Answer:

    D

    Step-by-step explanation:

    The radius r is the distance from the centre to a point on the circle.

    Calculate r using the distance formula

    r = √ (x₂ – x₁ )² + (y₂ – y₁ )²

    with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (- 5, – 12)

    r = \sqrt{(-5-0)^2+(-12-0)^2}

      = \sqrt{(-5)^2+(-12)^2}

      = \sqrt{25+144}

      = \sqrt{169}

      = 13 → D

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45:7+7-4:2-5:5*4+35:2 =? ( )