Question

how do you write 3.21 with the dash over the 21 as a mixed number

Answer 1

so 3.21(repeating)?

Answer 2

just the 21

Answer 3

mabe @just_one_last_goodbye or @magan @greenglasses @Alchemista @Vcarias123 @iamabarbiegirl @nincompoop @One098 @willreel @countrygirl1431

Answer 4

3 and 190/9

Answer 5

@tom982

Answer 6

if theres a dash over 21 its a repeating decimal

Answer 7

right

Answer 8

x = 3.21212121...
100x = 321.21212121...
99x =

Answer 9

so 3 and 190/9 is what I have

Answer 10

\[x=3.21212121\]\[100x=321.212121\]\[100x-x=99x=321.212121-3.212121=318\]\[9x=318\]\[x=318/9\]

Answer 11

Made a typo in the last two lines:
\[99x = 318\]\[x=\frac{318}{99}\]

Answer 12

careful

Answer 13

oops I realized 21 was repeating not just the .01

Answer 14

thats not the correct form it has to be something like 2 3/4

Answer 15

Can you convert 318/99 into a mixed fraction? I've done 99% of the work for you.

Answer 16

nope

Answer 17

We know ac+b=318 and that c=99, so you can work out b: \[a\frac{b}{c} = \frac{ac+b}{c}\]

Answer 18

i still don't get it

Answer 19

This is very basic maths, if you are being asked to find fractions from recurring decimals you should be able to convert an improper fraction to a mixed fraction. I'll do another fraction as an example: \[\frac{32}{7} = \frac{4*7+3}{7} = \frac{ 4*7}{7}+\frac{3}{7} = 4 \frac{3}{7}\]

Find how many times 99 (your c) goes into 318 (this is your a), then find the remainder (your b).