Which of the following is not one ways to express a ratio

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Which of the following is not one of the three ways to express a ratio

To determine which of the following is not one way to express a ratio, we need to review the different ways ratios can be written.

A ratio represents the relationship between two quantities. It can be expressed in several ways:

1. As a fraction: The ratio can be written in fraction form, such as 3/4 or 7/2. This represents the comparison of two quantities by dividing one by the other.

2. With a colon: Ratios can be expressed using a colon, like 3:4 or 7:2. The numbers before and after the colon represent the two quantities being compared.

3. Using words: Ratios can also be expressed using words, such as "3 to 4" or "7 to 2." This form explicitly states the comparison between the two quantities.

4. With a ratio symbol: Ratios can be written using a ratio symbol ":" between the numbers, like 3:4 or 7:2. This is similar to using a colon but without the use of words.

Now, let's determine which of the following is not one way to express a ratio:

1. "3/4" - This is a valid way to express a ratio, as explained above.

2. "7 and 2" - While this format can represent a comparison between two numbers, it is not commonly used to express a ratio. Thus, this is likely the answer to the question.

3. "9:12" - The use of a colon in this format is a common way to express a ratio.

4. "3 to 4" - This is another valid way to express a ratio using words.

Based on the analysis, "7 and 2" is not one way to express a ratio.