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Which of the following is a pair of equivalent numbers?

A. [tex]\frac{13}{4}[/tex] and [tex]3 \frac{1}{4}[/tex]
B. [tex]\frac{2}{5}[/tex] and 0.25


Sagot :

To determine which pairs of numbers are equivalent, we need to analyze each pair individually.

### Pair 1: [tex]\(\frac{13}{4}\)[/tex] and [tex]\(3 \frac{1}{4}\)[/tex]

1. Convert the mixed number [tex]\(3 \frac{1}{4}\)[/tex] into an improper fraction:
[tex]\[ 3 \frac{1}{4} = 3 + \frac{1}{4} \][/tex]
Calculate [tex]\(3\)[/tex] as [tex]\(\frac{3 \times 4}{4}\)[/tex]:
[tex]\[ 3 = \frac{12}{4} \][/tex]
Adding this to [tex]\(\frac{1}{4}\)[/tex]:
[tex]\[ 3 + \frac{1}{4} = \frac{12}{4} + \frac{1}{4} = \frac{12+1}{4} = \frac{13}{4} \][/tex]
So the first pair [tex]\(\frac{13}{4}\)[/tex] and [tex]\(3 \frac{1}{4}\)[/tex] are indeed equivalent.

### Pair 2: [tex]\(\frac{2}{5}\)[/tex] and [tex]\(0.25\)[/tex]

1. Convert [tex]\(\frac{2}{5}\)[/tex] into a decimal form:
[tex]\[ \frac{2}{5} = 0.4 \][/tex]

2. Compare the decimal form with [tex]\(0.25\)[/tex]:
[tex]\[ 0.4 \neq 0.25 \][/tex]
Therefore, [tex]\(\frac{2}{5}\)[/tex] and [tex]\(0.25\)[/tex] are not the same.

### Conclusion

Based on our analysis:

- [tex]\(\frac{13}{4}\)[/tex] and [tex]\(3 \frac{1}{4}\)[/tex] are equivalent.
- [tex]\(\frac{2}{5}\)[/tex] and [tex]\(0.25\)[/tex] are not equivalent.

So, the pair of equivalent numbers is [tex]\(\frac{13}{4}\)[/tex] and [tex]\(3 \frac{1}{4}\)[/tex].