Question

3x+32
13x+27
how do I find x?

Answer 1

Are there any equal signs in this?

Answer 2

i didn't see one, this was on an octagon

Answer 3

are these interior or exterior angles of an octagon ?

Answer 4

exterior

Answer 5

Is this a regular octagon or an irregular octagon ?

Answer 6

regular

Answer 7

I am not the best at geometry, but I do know that each exterior angle of a regular octagon is equal to 45 degrees and when added together equal 360. Thats about all that I know. Sorry...not much help

Answer 8

thanks anyway (:

Answer 9

and a regular octagon has equal sides

Answer 10

are you looking for perimeter or area ?

Answer 11

wait i made a mistake its a nonagon

Answer 12

arbyj, please post a screenshot of the full problem

Answer 13

i dont if yall can read that but here

Answer 14

*know

Answer 15

so it looks like a regular nonagon (9 sided polygon)

all 9 sides are congruent if this is true

3x+32 = 13x+27

x = ??

Answer 16

what did you get for x?

Answer 17

i got a decimal

Answer 18

so what decimal did you get for x?

Answer 19

remember a decimal is just a fraction expressed in units of 10

Answer 20

.5

Answer 21

yes 0.5 = 1/2

Answer 22

0.5 = 5/10 = 1/2

0.5 = five tenths (since the 5 is in the tenths decimal place)

I went from 5/10 to 1/2 by dividing both top and bottom by the GCF 5. It's always a good idea to reduce fractions as much as possible

Answer 23

oh okay

Answer 24

without a calculator,
3x+32 = 13x+27
-3x -27 from each side
5 = 10 x
divide by 10 and reduce
x = 5/10 = 1/2