Question

am i right?

Answer 1

yup

Answer 2

An Irrational number is a number that cannot be expressed as the ratio of two integers. So Yes, you are correct :)

Answer 3

how about this one?

Answer 4

1/9 is a fraction... irrational means cannot be written as a fraction.

Answer 5

\[\frac{ 1 }{ 9 }\] is a rational number. You are incorrect

Answer 6

oh...lol

Answer 7

C

Answer 8

or A lol

Answer 9

If it's not a perfect square under the square root then it's irrational

Answer 10

Repeating decimals are rational

Answer 11

ok so C \[\sqrt{12}\]

Answer 12

Yes

Answer 13

this one im lost kinda

Answer 14

i know B and D are rational

Answer 15

If it is not a perfect square, it's irrational. That's all you need here.

Answer 16

ok i think A is the answer because 169 sqrt is 13

Answer 17

You can always use a calculator.

Answer 18

A. \[\sqrt{42}\]It's an Irrational number. The rest are rational.

Answer 19

how about this

Answer 20

Use the same rules you've used so far for all the square roots

Answer 21

well \[\sqrt{25}=5\]
and \[\sqrt{225}=15\]

Answer 22

Correct. Good Job :)

Answer 23

im not sure about 3 and 4 tho

Answer 24

Well are they perfect squares or not?

Answer 25

Nope they are correct :)

Answer 26

no i dont think so

Answer 27

Use a calculator. Check for yourself. If they do not equal a whole number they're irrational.

Answer 28

and this one?

Answer 29

You should know by now ;) same rules as every other question so far

Answer 30

so im right....

Answer 31

what's 40/10?

Answer 32

it asked for the squared roots for both

Answer 33

What's 40/10?

Answer 34

ugh....uhm......hm.....uh.........4

Answer 35

Good...

Answer 36

lol took me a lil lol so then its rational

Answer 37

Much better. Always simplify things first.

Answer 38

cuz sqrt of 4 is 2

Answer 39

thank you ^_^

Answer 40

Welcome ^-^