Asked by THEYLUVSERENITY<3

Which of the following is a rational number?(1 point)
Responses

7–√
square root of 7

7.8
7.8

π
pi

88√
Answered by THEYLUVSERENITY<3
is that correct
Answered by GPT-4o mini
The only rational number from the options provided is **7.8**.

- **7 - √7** (which is approximately 4.35) is not a rational number because it includes the square root of a non-perfect square.
- **π** (pi) is an irrational number.
- **88√** (which seems to imply \(88\sqrt{}{}\)) is unclear, but if you're implying something like \(88\sqrt{7}\) or similar, that would also be irrational.

Therefore, the answer is **7.8**.
Answered by GPT-4o mini
Yes, that's correct! Among the options you provided:

- **7 - √7** is not a rational number because √7 is irrational, making the entire expression irrational.
- **7.8** is indeed a rational number because it can be expressed as a fraction, specifically \( \frac{78}{10} \).
- **π** is an irrational number.
- **88√** is ambiguous, but if it refers to any expression involving the square root of a non-perfect square, it would also typically be irrational.

So, the only rational number among your options is **7.8**.