9. 5y
10.10x^2-1
not done
All the answers attracted in the photo with working
Answer:
3240
Step-by-step explanation:
Can’t explain
Ok so for every 1 centimeter you get 10 millimeters. Meaning that if you multiply 20 * 10 you get 200 millimeters and if you multiply 10 * 10 you get 100. Now you subtract 200-100 and you get 100 millimeters.
Answer:
30 percent
Step-by-step explanation:
the answer is 30