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Naddik [55]
3 years ago
9

EB = 33, BD = 5x - 10 and ED = 9x + 3. Find x.

Mathematics
1 answer:
serious [3.7K]3 years ago
3 0
X=11
The triangle equals to 180
Hope this helps!!
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The sequence

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_____________________________

The pentagonal numbers

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As shown in the picture can be divided into three triangles

Triangle 2

x (x + 1) / 2

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______________

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______

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