Answer:
r < 1/3
Step-by-step explanation:
21r<7
Divide each side by 21
21r/21<7/21
r < 1/3
A. Is the answer
Hope this helped :)
When you roll a dice you will have side with 1-6 each has equal chances.
so the possible outcomes are 1,2,3,4,5,6
Sides given by
Opposite sides must be equal
Let's check once

Find sides now
- 10in
- 2+2=4in
- 2+5=7in
- 2(2)+3=4+3=7in
One pair of opposite sides are equal but others not .