CatherineSponge

Sponge: 9-17-08

A whole number is from 0-infinity on a number line. It is not a fraction and it is not a decimal and is not negative. A integer is any number negative infinity-positive infinity on a number line and its not a decimal and is not a fraction.

Sponge: 9-23-08

65) 4.78d+0d 4.78d

67)3.3t^2+8.7t-9.4t^2+5t -6.1t^2+13.7t

66)-21p-76p^2-9+p -20p-76p^2-9

68) 1.5m-4.2m-12.5v+4.2m 1.5m-12.5v

Sponge: 9-24-08

1) (-1/3)+(2/9)=(-3/9)+(2/9)=(-1/9)

2) -3+(-17) = -20

3)|-5|+(-5)+5=5

5)2a*(-3b)= 2*4 * (-3*-5)= 2*4*15=120

6) -4+5=1

7) (2*4^2) \(4*-5) 32/-20=-1.6

8)1-5+t t=temperature t=18 -5+18=13

9)8x-12

10)49t

Sponge: 9-25-08

1)Yes

2)No

3)No

4)No

Sponge: 9-26-08

1)Associative property does with two numbers that can be switched around and added and it won't matter. Commutive property does with three numbers that can be added in any order and still equal the same amount in the end.

Sponge: 10-1-08

15)14--2=14+2=16=16k^2

16) 4+9=13xy

17) 2t+2

18) 12x-4

1)15/7+-3/6=90/42+-21/42 2 8/42+21/42=2 -29/42=1 27/42

Sponge: 10-2-08

1)x=8 0+8=8=8

2)c=13 4+9=13=13

3)a=-10 -5*2=-10=-10

4)n=8 -64/-8=8=8

5)b=-8 -13-5=-8=-8

6) x=4 6-4=2=2

7) y=-4 28/-7=-4=-4

8) r=303 -101*-3=303=303

9) w=132 65+67=132=132 PG 199!!!!!!!!!!!!

Sponge: 10-3-08

40) 8+c/-4=-6 c=56 56/-4+8=-6=-6

41) 7-3k=-14 k=7 7*3=21-7=14=14

42) 14=6-2p p=-4 -4*2-6=14=14

43) -y/2+14=-1 -y=30 -30/2+14=-30=-30

Sponge: 10-6-08

5)4x+3=-5 x=-2 -5=-5

6)-1x+7=12 x=-5 12=12

7)2t-8t+1=43 t=-7 43=43

8)0=-7n+4-5n n=1/3 0=0

29) 1/5+3w/15=4/5=3/5+3w/15=12/15=w=3 4/5=4/5 Solve by Clearing!!!!