Answer:
30 marbles
Step-by-step explanation:
x = total # marbles
5/2 = x/12
2x = 60
x = 30
C and D
They go on forever like pi.
Answer:-2 minus square root 3
No
No, because there is no mutiplication sign, and it suppose to be 6x times 5.
180
you multiply the no of sides by 60
