anonymous
  • anonymous
a (-1,-7) and b(-10,-8) are the endpoints of a diameter of a circle. find the radius of the circle. (step by step response please) :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mertsj
  • Mertsj
Use the distance formula to find the length of the diameter and divide it by 2. That will be the radius.
anonymous
  • anonymous
how do you find the numbers to put in the distance formula?
Mertsj
  • Mertsj
They are given in the problem. x1=-1, y1=-7, x2=-10, y2=-8

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anonymous
  • anonymous
im sorry, im still confused ....
Mertsj
  • Mertsj
Do you know the distance formula?
anonymous
  • anonymous
yes
Mertsj
  • Mertsj
What is it?
anonymous
  • anonymous
-b\[\sqrt{b^2-4AC}/2A\]
anonymous
  • anonymous
-b +/_
anonymous
  • anonymous
well, you got the quadratic formula!
Mertsj
  • Mertsj
\[d=\sqrt{(x _{2}-x _{1})^{2}+(y _{2}-y _{1})^2}\]
Mertsj
  • Mertsj
Plug the numbers into that. Simplify and divide by 2. That will be the radius.
anonymous
  • anonymous
ha whoops .... my bad i prob shouldn't watch the super bowl while attempting math... thank you!
Mertsj
  • Mertsj
Sounds like a plan. Who are you rooting for?
anonymous
  • anonymous
the browns! haha
Mertsj
  • Mertsj
Go Browns
anonymous
  • anonymous
here we go brownies here we go!!
anonymous
  • anonymous
wait the answer comes out negative...
anonymous
  • anonymous
The browns arent playing silly. It's the giants and patriots
anonymous
  • anonymous
i know lol
anonymous
  • anonymous
okay good

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