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slavikrds [6]
3 years ago
13

The factors of 12pq+3pr+8qr+2r² are ______________.

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
4 0
I belive its number one :)
Xelga [282]3 years ago
4 0
The first choice would be correct
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The diameter of a circle has endpoints P(-12, -4) and Q(6, 12).
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Answer:

  (x +3)² +(y -4)² = 145

Step-by-step explanation:

The center of the circle is the midpoint of the given segment PQ. If we call that point A, then ...

  A = (P +Q)/2

  A = ((-12, -4) +(6, 12))/2 = (-12+6, -4+12)/2 = (-6, 8)/2

  A = (-3, 4)

The equation of the circle for some radius r is ...

  (x -(-3))² +(y -4)² = r² . . . . . . where (-3, 4) is the center of the circle

The value of r² can be found by substituting either of the points on the circle. If we use Q, then we have ...

  (6 +3)² +(12 -4)² = r² = 9² +8²

  r² = 81 +64 = 145

Then the equation of the circle is ...

  (x +3)² +(y -4)² = 145

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