Answer:
[tex]BC=\sqrt{5}[/tex]
Step-by-step explanation:
so we have B=(5,1) and C=(7,2)
we can use the distance formula
[tex]P(xy)=\sqrt{(x_1-x_2)^{2}+(y_1-y_2)^2 } \\\\P(BC)=\sqrt{(5-7)^{2}+(1-2)^2 } \\\\P(BC)=\sqrt{(-2)^{2}+(-1)^2 }\\\\P(BC)=\sqrt{4+1}\\\\P(BC)=\sqrt{5}[/tex]
