jia699 jia699
  • 03-05-2019
  • Mathematics
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Need help with number 3

Need help with number 3 class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 08-05-2019

Answer:

  (3)  y = 12

Step-by-step explanation:

The circle is centered at (x, y) = (-5, 2) and has a radius of 10. Hence the most positive y-value is y = 12.

___

Complete the squares of x-terms and of y-terms.

  (x^2 +10x) + (y^2 -4x) = 71

  (x^2 +10x +25) + (y^2 -4x +4) = 71 + 25 + 4

  (x +5)^2 +(y -2)^2 = 10^2 . . . . . . . a circle centered at (-5, 2) with radius 10.

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