missheyward30
06.05.2020 •
Mathematics
A room in the shape of a rectangular prism measures 15 feet by x
feet by 12 feet. Write a simplified expression for the volume (in cubic feet) of the room.
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Ответ:
Step-by-step explanation:
The two triangles given that are similar are
EDA and CBA
From this one fact, we get the following proportion.
ED/CB = (x + 8) / x Substitute for the line lengths
13/7 = (x + 8)/x Cross Multiply
13x = 7(x + 8) Remove the brackets
13x = 7x + 56 Subtract 7x from both sides
13x - 7x = 56
6x = 56 Divide both sides by 6
x = 56/6
x = 9.33