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

Answer Link

Otras preguntas

You catch a shrimp in the sea. In the afternoon you decide to release it in the freshwater river you finally found. The shrimps will quickly die. WHY?

Last year, a baseball team paid $20 per bat and $12 per glove, spending a total of $1040. This year, the prices went up to $25 per bat and $16 per glove. The te

What did Lucuis learn in school?

In Triagle ABC , DE is parallel to BC . The measure of < A is 60 degrees and the measure of < DEC is 125 degrees . What is the measure of < B? Please

100 POINTS FOR ANSWERING THIS What are your thoughts on the whole Afghanistan incident?

Which of these is NOT a solution? A. kool-aid powder in water B. sugar in lemon juice C. piece of wood in water

This one too I always get confused

Please define the term “Monsoons”. What effect do monsoons have on the subcontinent of India?

It is evident from these events that in the early years of the Revolutionary War ?

Solve 4 - x= -8. let me knowww real quick!