How can 33 over 9 be expressed as a decimal?
2.3 with bar over 3
3.6 with bar over 6
4.3 with bar over 3
4.6 with bar over 6

- anonymous

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- ♪Chibiterasu

Divide 33 by 9.

- anonymous

i get 3.666667

- ♪Chibiterasu

Yeah.

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## More answers

- ♪Chibiterasu

When a bar is over a number in a decimal that means it repeats.

- anonymous

so b?

- anonymous

yeah

- ♪Chibiterasu

|dw:1442868157605:dw|
yes

- anonymous

ok i have more :)

- anonymous

Simplify negative 9 over 6 divided by 3 over negative 2..
3
1
−1
−3

- anonymous

b?

- ♪Chibiterasu

\[\frac{9}{6 \div \frac{3}{2}}\]

- ♪Chibiterasu

That?

- anonymous

no this..

- anonymous

\[\frac{ -9 }{ 6 } \div \frac{ 3 }{ -2 }\]

- ♪Chibiterasu

Ok well dividing by a fraction is the same as multiplying by its reciprocal.

- ♪Chibiterasu

The reciprocal is just the fraction up-side down.

- ♪Chibiterasu

\[\frac{-9}{6} \times \frac{-2}{3}\]

- ♪Chibiterasu

This is the exact same thing.

- anonymous

right and then when i solve it i get 18/ 18 which equals 1 :)

- ♪Chibiterasu

Yeah.

- anonymous

okay next!

- anonymous

Which of the following numbers can be expressed as repeating decimals?
3 over 7, 2 over 5, 3 over 4, 2 over 9
2 over 9 and 3 over 4
3 over 7 and 2 over 5
2 over 5 and 3 over 4
3 over 7 and 2 over 9

- ♪Chibiterasu

3/7
2/5
3/4
2/9
Right off the bat we can remove 3/4 because it is common to know this this is 0.75

- ♪Chibiterasu

It is also known that x/5 is just .2, .4, .6 etc so thats also out.

- anonymous

ok

- ♪Chibiterasu

And when you divide the rest.

- ♪Chibiterasu

3/7 is pretty whacky but it repeats and so does 2/9 so yeah.

- anonymous

so d?

- ♪Chibiterasu

Yeah. When you come across something like this you just divide all the fractions and it becomes pretty obvious. :)

- anonymous

ok :)

- anonymous

Simplify (−3.5)(−3)(−6.4).
−672
−67.2
67.2
672

- anonymous

c?

- ♪Chibiterasu

Sorry was afk

- ♪Chibiterasu

Nope, the result will be negative

- ♪Chibiterasu

-1 * -1 = 1
1 * -1 = -1

- anonymous

how

- anonymous

@♪Chibiterasu

- anonymous

they are all negative which equals positive

- anonymous

@♪Chibiterasu

- ♪Chibiterasu

No

- ♪Chibiterasu

-0 * -0 = 0 ----> 0 * -0 = -0

- ♪Chibiterasu

See?

- anonymous

oh i get it.. so b?

- ♪Chibiterasu

yeah

- anonymous

ok next!

- anonymous

Hillary jogged a total distance of 7 and 1 over 3 miles during the months of October and November. If Hillary only jogged 1 over 6 mile every day, which expression shows the number of days in which she went jogging?
7 and 1 over 3 multiplied by 1 over 6
7 and 1 over 3 plus 1 over 6
7 and 1 over 3 minus 1 over 6
7 and 1 over 3 divided by 1 over 6

- ♪Chibiterasu

That would involve division to find how long she did it

- anonymous

d?

- ♪Chibiterasu

yeah

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