KateSponge

Kate Lowe


 * Wednesday September 17**

-What is the difference between an integer and a whole number?-

An integer is a whole umber and its opposite and a whole number any number thats not a negative, fraction, or decimal.

pg. 83 (65-68)
 * Tuesday September 23**

Simplify 65.) 4.78d+0d = 4.78d 66.) -21p-76p^2-9+p = -20p-76p^2-9 67.) 3.3t^2+8.7t-9.4t^2+5t = -6.1t^2+13.7t 68.)1.5m-4.2m-12.5v+4.2m = 1.5m-12.5v

pg. 85 (1-3, 5-10)
 * Wednesday September 24**

1.) (-1/3)+(2/9) = -1/9 2.) -3+(-17) = -20 3.) |-5|+(-5)+5 = 5

a = 4 and b = -5 5.) 2a*(-3b) = (2*4)(-3*[-5]) = 8*15 = 120 6.) -b-a = 1 7.) (2a^2)/(4b) = (2*4^2)/(4*[-5]) = 32/(-20)= -1.6

8.) T = temperature increase -5 F + T -5 F + 13 F = 8 F

9.) 1/3(24x-36) = 8x-12 10.) 6t+43t = 49t

pg. 91 (1-4)
 * Thursday September 25**

1.) not equivalent     X wrong 2.) not equivalent 3.) equivalent            X wrong 4.) not equivalent


 * Friday September 26**

Associative property- It doesn't matter which numbers you multiply or add first as long as all the symbols are the same ex. (a+b) + c = (c+b) + a

Commutative property- It doesn't matter in which order two numbers are multiplied or added ex. a+b = b+a


 * Monday September 29**

No class


 * Tuesday September 30**

No Sponge

pg. 116 (15-18)
 * Wednesday October 1**

15.) 14k^2-(-2k^2)= 16k^2

16.) 4xy+9xy= 13xy

17.) 6t+2-4= 6t+(-2)

18.) 9x-4+3x+ 12x-4

1.) 15/7 + -3/6= 1 and 9/14

pg. 119 (1-9 √ skills)
 * Thursday October 2**

1.) x=19 2.) x=6.2 3.) x=14 4.) x=33 5.) x=32 6.) x=3 7.) x=.2 8.) x=-9 9.) x= 3 and 3/4

pg. 122 (40-43)
 * Friday October 3**

40.) 8+c/-4=-6 -6-8=-14 -14*-4=56 8+56/-4=-6 C=56

41.) 7-3k=-14 -14-7= -21 -21÷-3= 7 7-3*7=-14 K=7

42.) 14=6-2p 14-6=8 8÷-2=-4 6-2*-4=14 P=-4

43.)-y/2+14=-1 -1-14=-15 -15*2=-30 Y=30

pg. 134 (5-8 √skills) pg. 129 #29 5.) 4x+3=-5                                  x=-2 -5-3=-8÷4=-2 4*(-2)+3=-5
 * Monday October 7**

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

7.) 2t-8t+1=43                             t=-7 -6t+1=43-1=42÷-6=-7

8.) 0=-7n+4-5n                           X Wrong n=1/3 ?

29.) 1/5+3w/15=4/5                   X Wrong w=3 ?