Question

Help Please
The sum of the angle measure of a polygon with s sides is 2,520. Find s

a.)14
b.)16
c.)18
d.)15

Answer 1

\(\large\color{black}{ (s-2)(180)=2,520 }\)

Answer 2

solve for s

Answer 3

-360=2,520 i think i did that totally wrong

Answer 4

do you know why I wrote \(\large\color{black}{ (s-2)(180)=2,520 }\) ?

Answer 5

no
why??

Answer 6

The sum of angle measures in a s-gon, with number sides s, is given by
\(\large\color{black}{ (s-2)(180)}\)

We know that in s-gon the sum of measures is equal to \(\large\color{black}{ 2,520 }\)

So, we can write that the sum of the angles in an s-gon is equivalent to 2520.
equation for this is,
\(\large\color{black}{ (s-2)(180)=2,520 }\)

Answer 7

Makes sense?

Answer 8

okay but im not understanding how i solve that.. :(

Answer 9

okay, you have a product of (s-2) and 180 is equal to 2520.
First, isolate the (s-2) by dividing both sides by 180.

2520 divided by 180 is 14
and "(s-2)180" divided by 180 is just (s-2).

So you get \(\large\color{black}{ s-2=14 }\)
And the last step, you can do on your own:)

Answer 10

so its 16 :) Thank you so much :)

Answer 11

No problem.