Answer:
4/b
Step-by-step explanation:
7/b - 3/b
Since the denominators are the same, we can subtract
4/b
I believe the answer would be d .
1. There are 10 ducks in total, 5 in each pool.
2. For each pool, the probability of picking a certain numbered duck—for instance, #3—is 20%.
3. Because the pools are separate with, picking one duck from one pool does not affect the chance of picking a certain duck from the other pool.
4. Therefore, the probability that a contestant wins the game is 20%.
Good luck!
The one that makes most sense is the last one, but I would define it as "Two times some number divided by 4".
If a square contains 171 tiles you will need multiply 21 by 171 (171x21) which should give you the amount for the entire roof.
Hope this helps! :)
