badrouszaynab badrouszaynab

12-02-2019
Mathematics

contestada

A polygon has 90 diagonals, how many sides does it have? Show all work.

A polygon has 4850 diagonals, how many sides does it have? Show all work.

Respuesta :

SoccerHalo SoccerHalo

12-02-2019

Answer:

15 sides

100 sides

Step-by-step explanation:

n(n-3)

-------- = 90 so n²-3n=180

2

n²-3n-180 = (n-15) (n+12) = 15 because -12 is negative XD

same process with 4850 diagonals.

it should be 100 sides :D

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