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October 26, 2014

October 26, 2014

Posted by **Anonymous** on Wednesday, August 7, 2013 at 1:00am.

A. 1/5

B. 11/15

C. 47/60

D. 3 13/30

E. 12

2. If 2/5 of (2/3)/(5/6) is divided by 3/10, what is the resulting value?

A. 1/15

B. 12/25

C. 8/15

D. 5/3

E. 125/27

3. Solve for x: 2x+3<=11

Are there two answers?

4. Solve for x: 3x+4>=5x-8

Are there two answers?

- Mathematics -
**Bosnian**, Wednesday, August 7, 2013 at 2:32am1.

2 / ( 2 / 3 ) = ( 2 / 1 ) / ( 2 / 3 ) =

2 * 3 / ( 1 * 2 ) = 6 / 2 = 3

( 3 / 4 ) / ( 4 / 5 ) = 3 * 5 / ( 4 * 4 ) = 15 / 16

2 / ( 2 / 3 ) + ( 3 / 4 ) / ( 4 / 5 = 3 + 15 / 16 = 3 15 / 16

2.

( 2 / 3 ) / ( 5 / 6 ) = 2 * 6 / ( 3 * 5 ) = 12 / 15 = 3 * 4 / ( 3 * 5 ) = 4 / 5

2 / 5 of ( 2 / 3 ) / ( 5 / 6 ) =

( 2 / 5 ) * ( 4 / 5 ) =

2 * 4 / ( 5 * 5 ) = 8 / 25

( 8 / 25 ) / ( 3 / 10 ) = 8 * 10 / ( 3 * 25 ) =

8 * 2 * 5 / ( 3 * 5 * 5 ) =

8 * 2 / ( 3 * 5 ) =

16 / 15 = ( 15 + 1 )/ 15 =

15 / 15 + 1 / 15 = 1 1 / 15

3.

2 x < = 8 Subtract 3 to toth sides

2 x + 3 - 3 < = 11 - 3

2 x < = 8 Divide both sides by 2

2 x / 2 < = 8 / 2

x < = 4

4.

3 x + 4 > = 5 x - 8 Subtract 3 x to both sides

3 x + 4 - 3 x > = 5 x - 8 - 3 x

4 > = 2 x - 8 Add 8 to both sides

4 + 8 > = 2 x - 8 + 8

12 > = 2 x Divide both sides by 2

12 / 2 > = 2 x / 2

6 > = x

That is same x < = 6

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