Mathematics: Triangle DEF has coordinates D(3, 4), E(4, 1), and F(1, -2). If the triangle is dilated by a scale factor of 2, what are the coordinates of D ?

Triangle DEF has coordinates D(3, 4), E(4, 1), - id344112049723, minecraftsam2018

Nobleufia

11.01.2021

4 : 3 : 2

x - area unit

area of the kitchen = 4x

area of the playroom = 3x

area of the dinning room = 2x

The combined area of these three rooms is 189 ft².

Therefore we have the equation

4x + 3x + 2x = 189

9x = 189 |:9

x = 21 ft²

area of the kitchen = 4x = 4(21) = 84 ft²

area of the playroom = 3x = 3(21) = 63 ft²

area of the dinning room = 2x = 2(21) = 42 ft²

Step-by-step explanation:

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