in the triangle pqr is an equilateral triangle. find the length of qr if pr is equal to 4x-7 and pr is equal to 2x+5?
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Since triangle pqr is equilateral so
pq=pr=rq
Thus we have qr=4x-7 andpr=2x+5
So
4x-7=2x+5
2x=12
x=6
So qr=4(6)-7
So qr=17
pq=pr=rq
Thus we have qr=4x-7 andpr=2x+5
So
4x-7=2x+5
2x=12
x=6
So qr=4(6)-7
So qr=17
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