Question

Classify the numbers as rational or irrational.
negative 4/5
square root of two
2.5
0.44444444...
square root of 16

@Hero
@dan815
@nincompoop

Answer 1

please help me someone

Answer 2

all rational number can be expressed as a fraction a/b
eg 1/2 , 3/4 . 6 ( = 6/1) are all rational

Answer 3

so how about -4/5 ?

Answer 4

- thay can be negative fractions as well as posituve

Answer 5

is -4/5 a fraction?

Answer 6

so negative 4/5 and 2.5 and the square root of 16 are all rational

Answer 7

right

Answer 8

what about 0.4444...
this is 0.4 recurring - meaning it 'goes on forever'
but can it be written as a fraction?

Answer 9

no

Answer 10

it can actually 1/9 = 0.11111111..
so 0.44444444... is 4/9
so its rational

Answer 11

that makes more sense

Answer 12

the only one which is irrational is sqrt2

Answer 13

there are many like that , sqrt3, sqrt6, sqrt8 . sqrt 17 and so on

Answer 14

ok thanks

Answer 15

yw

Answer 16

i have another question

Answer 17

ok but i only have 5 minutes

Answer 18

What is the product of 1.7 × 10−13 and 3.5 × 1025?
1.8 × 10^12
2.06 × 10^12
3.5 × 10^12
5.95 × 10^12

Answer 19

What is the product of 1.7 × 10^−13 and 3.5 × 10^25?
1.8 × 10^12
2.06 × 10^12
3.5 × 10^12
5.95 × 10^12

Answer 20

multiply 1.7 by 3.5

then add the exponents
10^-13 * 10^25 = 10^(-13+25) = 10^ ?

Answer 21

gtg

Answer 22

ok bye