Answer: an endless cylinder with radius 4 mm and centerline
Answer:
1. PQ
2. PR
3. OR/OP
4. OR/OP
5. RO
Step-by-step explanation:
Answer:

Step-by-step explanation:
Product of of 3 and b is 3b
At least means greater than or equal too.

Step-by-step explanation:
first you have to do the subtraction in the parentheses so it's 8+3(4) and then you multiply the 3 by 4 (only the 3 because the 8 isn't next to the multiply) and then you have 12, add 8 and it's 20
Answer:
x is greater than or equal to 19