BreckSponge

Breck DeHartBreck DeHart

I-7+8I+I-9I= 10 the answer is G

1    2     3     4     5 15  30  45   60   75 the answer is A

65. 4.78d              66.-20p+-76p²+-9                67. -6.1t²+13.7t               68. 1.5m+-12.5v

page 85 1-3   5-10 1. -1/9   2. -20    3. 5 5. 2*4*(-5*-5) -5*-5= 25   2*4=8*25=200     6. 5-4=1    7. (2*4²)/(4*-5)    16*2= 32 /-20       -8/5        8. -5+a=b      -5+13=   9. 8x-12  10. 49t

page 91  1-4

1. yes     2. no       3. no      4. no

property explanation

The associative property is to move the perenthesies to regroup numbers in an addition or multiplication problem that produces the same answer. (a+s)+b=a+(s+b) The commutative property is to change the order the numbers are in and it does not change the answer of the problem in an addition or subtraction form. a*b=b*a

no sponge....... test

15-18 pg. 116 and problem on the board

15. 16k²         16. 13xy         17. 2t+2         18. 12x+-4 1. 90/42+-21/42= 69/42= 22/14

119 1-9

1. x=19 2. x=5.2 3. x=14 4. x=33 5. x=32 6. x=3 7. x= 1/5 8. x=-9 9. x=15.4

122 40-43

40. c=56 41. k=7 42. p=-4 43. y=30