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Math exam help?

What’s 1-10

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3 Answers

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  • 1 month ago

    1. 9 

    2. AE and CD 

    3. BD 

    4. 18 

    5. 

    6. CM 

    7. C 

    8. 

    9.

    10.

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  • Pyrus
    Lv 6
    1 month ago

    1-10 = -9. Problem solved. 

    OK, just kidding :P

    1. The length of the radius is the length from the center of a circle to any point on the circle. P is the center, and C is a point on the circle. Since they told you that CP = 9, that means the radius is equal to 9 (from point P to point C). 

    2. Chords are straight line segments whose endpoints both lie on the circle.

    BA is a chord. DE is another chord. So yea, these two. 

    3. Diameter is a line that pierces the circle through its center. So, a line that passes through P. BD is such a line. So, BD is a diameter of the circle with center point P.

    4. The length of the diameter is equal to two times the length of the radius:

    d = 2*r.

    Do we have a radius? Yes, it was the first question.

    d = 2*9 = 18. The length of the diameter is 18.

    5. Secants of a circle are the infinite line extensions of a chord.

    AE is a secant. 

    6. A tangent to a circle is a straight line which touches the circle at only one point. In other words, it doesn't pierce it. Line "m" is a tangent to this circle.

    7. The tangent "m" touches the circle at point "C". So, C is the point of tangency. 

    8. Diameter of a circle equals to 2*r as mentioned above. So, simply replace in every case:

    a. d = 12*2 =24

    b. d = sqrt(5)*2 = 2*sqrt(5)

    c. d = (sqrt(3)/2)*2 = sqrt(3)

    9. To find the radius, we simply divide by 2.

    a. r = 24/2 =12

    b. r = 15/2 = 7.5

    c. r = (5/2)/2 = 5/4

    10. Cannot answer this question. You took a bad photo and I cannot see the figure. I need to know if the circles are intersecting or not, otherwise I cannot calculate. 

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  • Anonymous
    1 month ago

    Yahoo Answers is a place to ask for homework HELP, not SOLUTIONS.

    • Justn1 month agoReport

      word boy

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