Question

what is the equivalent rational value of ;

Answer 1

\[\sqrt[3]{64}\]

Answer 2

do you know what the simplified form of \(\sqrt[3]{64}\) is?

Answer 3

I don't know , I can try to figure it out but I don't know

Answer 4

you know that \(\sqrt[3]{64}\) is read as "cube root of 64" right? that means you should think of a number that when you multiply it to itself 3 times, you get 64

Answer 5

for example, 2 cubed is 2 x 2 x 2 = 8

or 3 cubed is 3 x 3 x 3 = 27

Answer 6

so what number would make 64?

Answer 7

oh , 8

Answer 8

8 x 8 x 8 is 512

although, you're close since 8 x 8 is 64. but you need the number to be multiplied to itself 3 times

Answer 9

ohhh sorry ! For 3 times it would be ; .. 21 x 21 x 21 is 64 ...

Answer 10

that's 21 + 21 + 21 = 64 not times

Answer 11

or is it 63 .. ugh

Answer 12

I need help :/

Answer 13

use trial and error on each number

1 x 1 x 1
2 x 2 x 2
3 x 3 x 3
4 x 4 x 4
5 x 5 x 5
etc..

one of those will give you 64

Answer 14

ohh ... 4x4x4

Answer 15

right

Answer 16

so \[\sqrt[3]{64} = 4\]
now, rewrite 4 as a fraction

Answer 17

4 as a fraction ? how ? I forgot how to do that .

Answer 18

think of a number that when you divide 4 by that number, you'll still get 4

Answer 19

well that would be 1 .

Answer 20

right. so 4 as a fraction is 4/1

Answer 21

hat's your rational value now

Answer 22

ohh right rght

Answer 23

ok but the choices are
a. 2
b. 8
c. 4
d. 21

Answer 24

then choose 4. since 4/1 is also 4

Answer 25

Good , so i was right ! Because I did some what of what you did then I did the 4x4x4 but just chose 4... >_< but atleast my answers right and now i remember .. THANKS!

Answer 26

welcome