BrantleySponge

Brantley Taylor

9/22: pg.32 (21-22) 21) G. 10                                 l-7+8l + l-9l -> l1l+l9l= 10              22) A. h=15w (1)(15)= 15    (2)(15)= 30     (3)(15)= 45     (4)(15)= 60     (5)(15)= 75

9/23: pg.83 (65-68) 65) 4.78d+0d= 4.78d            66) -21p-76p²-9+p= -20p-76p²-9 67) 3.3t²+8.7t-9.4t²+5t= -6.1t²+13.7t            68) 1.5m-4.2m-12.5v+4.2m=1.5m-12.5v

9/24: pg. 85 (1-3; 5-10) 1) (-1/3)+(2/9)= (-1/9) 2) -3+ (-17)= -20 3) l-5l + (-5) +5= 5 5) (2a)(-3b) -> (2)(4)(-3)(-5)=120 6) -b-a -> -4+5= 1 7) (2a²)/(4b) -> (2*4²)/(4*-5) -> 32/-20= -1.6 8) -5*F+p=13*F    p=temperature change  9)1/3(24x-36)=8x-12 10) 6t+43t=49t

9/25: No Class

9/26: pg. 91 (1-4) 1) -(y-4) and 4-y are equivalent because the y are both negative and the 4 are both positive 2) 8+5m and 8+5+m are not equivalent because they have addition 3) 2(t-7) and 7(t-2) are not equivalent because they have subtraction 4) 4(2b-3) and 2[(2-1)b-2] are not equivalent because they have subtraction

9/29: Board The Associative Property is the regrouping of numbers and/or variables produces the same answer in additions or multiplication problems or numbers and/or variables in the parenthesis change but the answer doesn't : (A+B)+C=A+(B+C) or (A*B)C=A(B*C) The Commutative Property is the adding or multiplying numbers in any order to produces same answer: A+B=B+A and B*A=A*B

9/30: No sponge

10/1: Board: 1; pg. 116 (15-18) 1) 15/7 + -3/6 --> 90/42 + -21/42 --> 69/42 = 23/14 15) 14k² - (-2k²)= 16k² 16) 4xy + 9xy= 13xy 17) 6t + 2 - 4t= 2t +2 18) 9x - 4 + 3x= 12x - 4

10/2 : No Class

10/3: Page. 119 (1-9) 1) x-5=14     x=19        19-5=14   19=19      +5  +5 2) x + 3.8 = 9       x= 5.2      5.2+3.8 = 9     5.2=5.2 -3.8   -3.8 3) -7+x=7      x=14       -7+14=7      14=14     +7      +7     4) x-13=20      x=33     33-13=20    33=33 +13 +13 5)x/4=8       x= 32      32/4=8   32=32     *4  *4 6) 9= 3x     x=3       9=3*3     3=3 /3 /3 7) 10x=2     x=1/5    10*.1/5=2       1/5=1/5    /10  /10 8) 2/3x=-6     x=-5     2/3*-9=-6      -9=-9 *3/2  *3/2    9)x+2 3/4 = 6 1/2    x=3 3/4    3 3/4+2 3/4=6 1/2       3 3/4=3 3/4      -2 3/4    -2 3/4

10/6: Page 122 (40-43) 40) 8 + c/-4 = -6                                c/-4 = -14                                 c=56        8 + 56/-4 = -6        -6=-6√      -8                 -8   (subtraction)        *-4      *-4 (multiplication) 41) 7-3k = -14                              -3k = -21                          k= 7       7-3*7= -14     -14=-14√ -7            -7 (subtraction)      /-3k    /-3k (division) 42) 14= 6 -2p                      8=-2p                         p=-4      14=6-2*-4      14=14√        -6   -6 (subtraction)    /-2 /-2 (division)   43) -y/2 + 14= -1                               -y/2=-15                                   -y= -30        y=30      30/2 +14=-1      -1= -1√ -14   -14 (subtraction)         *2     *2 (multiplication)       /-1   /-1