Answer:
120 red marbles
Step-by-step explanation:
5 to 3 gives a total of 8
let x = # red marbles
<u> 3 </u> = <u> x </u>
8 320
8x = 960
x = 120
10 sides,that is, a decagon or 10gon
If the exterior angle is 36° then numbers of sides=
Therefore
n=360°÷36°=10
-3
got it right on edg
wow the answer is not listed on option