12 ribbons
p.s: im in 7th grade so you can trust me
Answer:6 weeks
Step-by-step explanation: 5, 10, 20, 40, 80, 160
2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression
Use a porportion to help better and speed up the process
1. Rational. It is non-terminating but repeating.
2. Irrational. It is non-terminating, non-repeating
3. Irrational. π is irrational
4. Rational. √49 is 7
5. Irrational. 22 is not a square.
