I want to know if these numbers rational or irrational and why?

Step-by-step explanation:

2)

This is a rational number because as a decimal, it is -0.3. It doesn't repeat, so it is a terminating decimal.

3)

When you put this into a calculator, you get 6.324555... Since this decimal would go on forever, it is irrational.

4)

When you put this into a calculator, you get 9. It is a whole number, so it is rational.

5) 2

As an improper fraction, this is 7/3. When you put this into a calculator, you would get 2.33333... Since this decimal would go on forever, it is irrational.

6) 0.35

This is a terminating decimal, just like number one. It doesn't repeat, so this is a rational number.

7) 0.33333 ....

This is an irrational number because it repeats.

8) -9

Since this is a whole number, it would be rational.

9) 3.4

This is a terminating decimal, just like number 6. It doesn't repeat, so this is a rational number.

10)

When you put this into a calculator, you get 1.41421... Since this decimal would go on forever, it is irrational.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

bull

step-by-step explanation: