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Kipish [7]
3 years ago
9

HELP PLZ ILL GIVE U BRAINLY THINGY IF CORRECT

Mathematics
1 answer:
anygoal [31]3 years ago
5 0

Answer:

1 and 8 are parallel

5 and 14 are not parallel

2 and 3 are paralell

Step-by-step explanation:

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Determine the center and radius: x2 + y2 - 10x + 8y -8 = 0​
Kipish [7]

So our equation currently is ⇒ x^2+y^2-10x+8y-8 = 0

<u>Let's first move all the constant to one side and group 'like variables' together</u>:

      (x^2-10x)+(y^2+8y) = 8

<u>Now lets complete the square of both equations</u>

    (x^2-10x+25)+(y^2+8y +16) = 8 + 25 + 16\\(x-5)^2+(y+4)^2 = 49\\(x-5)^2+(y+4)^2 = 7^2

<u><em>Now we know the circle's general equation format is</em></u>:

   ⇒(x-h)^2+(y-k)^2 = r^2

  • (h, k) ⇒ coordinate of the center of the circle
  • r ⇒ length of radius of circle

<u>Thus the radius of the circle is 7</u>

<u></u>

Hope that helps!

7 0
2 years ago
Please help me by marking the correct answer to each part of number 9. I really dont get this at all, so please tell me why your
Margaret [11]
9a) False, The dimensions are 10 x 20

b) True, 10 x 20 = 200

c) 10-6=4   (right side minus left side)
    26-20=6 (bottom line minus top line)

d) True, Area of a triangle = (base x height) / 2

The base is 6 and the height is 4, so 6 x 4= 24 / 2 =12

e) True, the total area is equal to the triangle area plus the rectangles area.

so, 200+12= 212
7 0
4 years ago
What is (pi/3) radians converted to degrees? If necessary, round your answer to the nearest degree.
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60
it is 60 degree
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The answer is 2.5 kilograms. One kilogram is 1000 grams.

Hope this helps and hope you have a great day
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4 years ago
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The SAT mathematics scores in the state of Florida are approximately normally distributed with a mean of 500 and a standard devi
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I this the answer you are looking for would probably be 47.7%. hope this helps!!
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3 years ago
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