Mathematics, 28.01.2020 06:31 darlenepitre
One endpoint of ab has coordinates (-3,5) if the coordinates of the midpoint of ab are (2,-6),what is the length of ab?
Answers: 3
![\bf \textit{distance between 2 points}\\ \quad \\ \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({{ -3}}\quad ,&{{ 5}})\quad % (c,d) &({{ 2}}\quad ,&{{ -6}}) \end{array}\qquad % distance value d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2} \\\\\\ d=\sqrt{[2-(-3)]^2+[-6-5]^2}\implies d=\sqrt{(2+3)^2+(-6-5)^2} \\\\\\ d=\sqrt{5^2+(-11)^2}\implies d=\sqrt{25+121}\implies d=\sqrt{146}](/tpl/images/0475/6864/7dc38.png)
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One endpoint of ab has coordinates (-3,5) if the coordinates of the midpoint of ab are (2,-6),what i...
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