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Otrada [13]
3 years ago
13

What is -5-3(-5x-3)-3x

Mathematics
2 answers:
Leokris [45]3 years ago
8 0
−5−3(−5x−3)−3x

- 5 - ( - 15x - 9 ) - 3x

-5 + 15x + 9 - 3x

(-5 + 9) + (15x - 3x)

4 + 12x
lukranit [14]3 years ago
7 0

Answer:

12x+4

Step-by-step explanation:

when simplified you would get 12x + 4

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Surface area of the rectangle prism
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2(11 x 7) + 2(9 x 7) + 2(9 x 11) = 478m²

<em>(* The opposite side of the rectangle area is the same, therefore x2)
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Overlapping area
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2.5 x 2.5 = 6.25m²

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Surface area of the composite figure
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37.5 + 478 - 2(6.25) = 503m²

<em>(* The bottom of the cube and the top of the rectangle prism overlapped, so the area is overlapped twice, minus 2 times of that area)</em>

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Answer: 503m²
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3 years ago
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