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January 28, 2015

January 28, 2015

Posted by **dyl** on Tuesday, December 14, 2010 at 5:07pm.

- 7th Grade Math -
**Amber**, Tuesday, December 14, 2010 at 6:16pmI believe 21

2 doubled is 4

4 + 5 is 9

a quarter of 9 is 3

3+9 is 12

12 plus two is fourteen and half of fourteen is 7

7 plus 14 is 21.

- 7th Grade Math -
**Henry**, Wednesday, December 15, 2010 at 10:23pmAndy has X-Marbles.

Gave Bob (X/2 + 2),

Bal. = X - (X/2 + 2) = X/2 - 2.

Gave Alex 1/4(X/2 - 2) + 5 = X/8 + 9/2,

Bal.=(X/2 - 2) - (X/8 + 9/2)=3X/8-13/2.

Gave Emily 1/2(3X/8 - 13/2) =

3X/16 -13/4.

Bal. = 3X/16 - 13/4.

3X/16 - 13/4 = 2,

Multiply both sides by 16:

3X - 52 = 32,

3X = 32 + 52,

3X = 84,

X = 84 / 3 = 28 Marbles.

- 7th Grade Math -
**Brakenette**, Wednesday, January 12, 2011 at 9:33pm2 1/2 =2 2/4

5 1/4

1/2 2/4

________________

8 1/4

- 7th Grade Math -
**Joe**, Monday, April 11, 2011 at 4:35pmI Think it is 21 Because:

2 doubled is 4

4 + 5 is 9

a quarter of 9 is 3

3+9 is 12

12 plus two is 14 and 1/2 of 14 is 7

7 + 14 is 21.

so 21 is the answer

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