Mathematics, 23.12.2019 03:31, Maxxboogie
Points a, b, c, d, and o have coordinates (0, 3), (4, 4), (4, y), (4, 0), and (0, 0), respectively. the area of acdo is 5 times greater than the area of abdo. find y.
Answers: 3
![={\text{having vertices}} (x_{1},y_{1}),(x_{2},y_{2}) {\text{and}} (x_{3},y_{3})=\frac{1}{2}\times[x_{1}(y_{2}-y_{3})-x_2(y_{3}-y_{1})+x_{3}(y_{1}-y_{2})]](/tpl/images/0430/2255/05729.png)
![=\frac{1}{2}[0(y-0)-4(0-3)+4(3-y)]\\\\= \frac{1}{2}[12+12-4y]\\\\=12-2 y](/tpl/images/0430/2255/98b37.png)
![=\frac{1}{2}[0(4-0)-4(0-3)+4(3-4)]\\\\ =\frac{1}{2}[12-4]=4](/tpl/images/0430/2255/4591d.png)
![=\frac{1}{2}[0(3-0)-0(0-0)+4(0-3)]=6](/tpl/images/0430/2255/5c1c1.png)
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Points a, b, c, d, and o have coordinates (0, 3), (4, 4), (4, y), (4, 0), and (0, 0), respectively....
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