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IrinaK [193]
2 years ago
11

To original: 160 new: 136

Mathematics
1 answer:
Dima020 [189]2 years ago
8 0

(136-160):160*100 =

(136:160-1)*100 =

85-100 = -15

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70°

Step-by-step explanation:

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X^2-4x+3=0 write it in standard form.
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Answer:

x

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What is the number of diagonals that intersect at a given vertex of a hexagon, heptagon, 30-gon and n-gon?
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Answer:

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number of diagonals = \frac{30(30-3)}{2}

                                          = \frac{810}{2}

                                         = 405

The number of diagonals in a 30-gon is 405.

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