C is the circumcenter of triangle PQR. PC=3x+7, RC=5x-15, and QC=51-x
What does QC=
1 answer:
Given:
C is the circumcenter of ΔPQR
PC = 3x + 7
RC = 5x - 15
QC = 51 - x
To find:
QC
Solution:
All vertices or a triangle are equidistant from its circumcenter.

Let us take
.

Add 15 on both sides.


Add x on both sides.


Divide by 6 on both sides, we get
x = 11
Substitute x = 11 in QC.
QC = 51 - 11
= 40
Therefore QC = 40.
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