Since you know that one coin is fake and that the coin is lighter than the rest , then you would only need to weigh all the coins together 1 time to ensure that you will find the fake coin. We can determine this by doing the following.

Example:

Lets say we have 100 coins that weigh 1 gr each. Meaning that the total weight of the 100 coins would be (100coins*1gr = 100gr) IF there are no fake coins in the batch.

Knowing this we can weigh the entire batch 1 time and if the total weight is less than 100gr we know that the fake coin is in that batch.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0

3 years ago

Which of the following inequalities matches the graph?

Mamont248 [21]

Answer:

Step-by-step explanation:

y ≤ 5x - 1

- 5x + y ≤ - 1

5x - y ≥ 1

8 0

3 years ago