KatherineSponge

Katherine Parsons

9/22 pg. 83 (65-68)

65) 4.781d+0d       4.78d 66) -21p-76p^2-9+p -20-76 p^2-9 67)3.3t+8.7t-9.4t^2+5t     3.3+8.7+5 19-9.4        -6.1t^2+13.7t 68)1.5m|-4.2m|-12.5v|+4.2m 1.5m-12.5v 9/23-no class 9/24- 24 pg.85 1) (-1/3) + (2/9) *3 (-3/9) +(2/9) -1/9 2)-3+(-17) -20 3)|-5|+(-5)+5 5+-5 0+5=5 5)2*4*(-3*-5) 120 6) -b-a 1 7)(2a²) / -1.6 8)T=temperature -5+T 9)1/3(24x-36) 10)6t+43t

9/25 pg 91 1)yes 2)no 3)no 4)no

9/26 The associative property can be used with addition and multiplication and it is when you have all addition and it does not matter which way you add them together. an example would be 4+(5+7). The communicative property is when you add together with different variables but when you add them together it does not matter which order they can be added. So an example would be 4xyz+5zyx=9xyz or 9zyx

9/29- no sponge 9/30-no class 10/1pg 116 15)14k²- (-2k²)= 16k² 16)4xy+ 9xy= 13xy 17)6t+2-4t=2t+2 18)9x-4+3x=12x -4 1)15/7 + -3/6=90 /42 + -21/42= 69 /42

10/2 pg.119 1)x-5=14    x=19 2)x+3.8=9 x=.2 3)-7+x=7    x=14 4)x-13=20 x=7 5)x/4=8 x=32 6)9=3x= x=3 7)10x=2   x=1/5 8)2/3x=-6 x=-9 9)x+23/4=61/2   x= 15 10/3 40)8+c/4=-6 -8        -8      c/4 = -14 *4 = -56      c=56 41)7-3k=-14     -7       -7       -3k =-21       /3       /3         k=7 42)14=6-2p -6      -6       8  =  -2p /-2     /-2      -4=       p 43)-y/2 +14=-1                 -14    -14      -y/2    =   -15          *2          *2      y = 30

10/6 pg 134 5)4x+3=-15        -3     -3   4x=-18    /4    /4 x=-2 6)-1x+7=12 -7   -7    -1x= 5 /-1  /-1   x=-5 7)2t-8t+1=43    -6t +1=43         -1       -1    -6t=42       /-6   /-6     t=-7 8)0=-7n+4-5n -12n+4=0 -4   -4     -12n=-4 /-12    /-12     n=1/3 pg.129 29)1/5+3w/15=4/5        3+3w=12          -3      -3              3w=9           /3     /3      w=3