# What is the distance between (7,3,4) and (3,9,-1)?

This is the distance formula: $\sqrt{{\left(X 2 - X 1\right)}^{2} + {\left(Y 2 - Y 1\right)}^{2} + {\left(Z 2 - Z 1\right)}^{2}}$
sqrt((-4)^2+(6)^2+(-5)^2
$\sqrt{\left(16 + 36 + 25\right)}$
$\sqrt{77}$