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2.6.notebook
October 23, 2015
2.6 Notes
p.103
LT: I can divide real numbers.
The sign of a quotient:
+
­
­
Inverse Property of Multiplication:
Reciprocals:
What number is the multiplicative inverse? Rules of Division
1. 2. 3. Examples:
­16 ÷ 4
Summary:
5
­20 ÷ (­ )
3
12x ­ 8
­4
2.6.notebook
2.6 CW
October 23, 2015
p.104­105 (1­13)
2.
1.
6.
5.
9.
11.
3.
4.
7.
8.
10.
12.
13.
2.6.notebook
IF
October 23, 2015
Box 7
Checking:
2.5 CW
An archer shoots 10 arrows at a target. Some arrows hit the 4 point ring, and the rest hit the 5 point ring. Write an equation that gives the score s as a function of the number a of arrows that hit the 4 point ring. Then find the score if 6 arrows hit the 4 point ring.
hand back MR
2.6.notebook
October 23, 2015
When re­submitting your work for credit back:
• ALL WORK should be clearly SHOWN!!
• If space is a problem, use your own paper.
2.6.notebook
October 23, 2015
2.5 Problem Solving CW
42. C = 130 ­ 2p
answers
C = $122
31. p = 262.50 ­ 1.75t
p = $245
2.6.notebook
October 23, 2015
2.5 CW
answers
1.
2.
3.
4.
5.
2x + 6
­4 + y
­3m2 + 15m
n + 3
terms and like terms: ­7y, 8, ­6y, ­13
coeff: ­7, ­6
constants: 8, ­13
6.
7.
3n + 34
525 calories, 585 calories
2.6.notebook
October 23, 2015
2.5 Problem Solving Practice Answers
50.
s = ­a + 60 ; 58 points
51.
C = 3r ­ 6 ; $5.97
52.
C = 0.10m + 1.50 10 mins then 15 mins costs $5.50 compared to 25 mins cost $4.
53.
s = d(x + y + z)
54.
y = ­15x +700; $475
55.
8
1000
3
3
r = a + 2.6.notebook
October 23, 2015
After school days
this week:
check
check
check
check
check
check
Friday
Test is next
Thursday!
2.6.notebook
October 23, 2015
2.6 Notes
p.103
LT: I can mulitply real numbers.
The sign of a quotient:
divide
+
­
­
Inverse Property of Multiplication:
Reciprocals:
What number is the multiplicative inverse? Rules of Division
1. 2. 3. Examples:
­16 ÷ 4
5
­20 ÷ (­ )
3
12x ­ 8
­4
2.6.notebook
2.6
October 23, 2015
CW
p.104­105 (1­13)
Always show all work.
#9­10 use calculator. Write work down.
answers
1.
2.
3.
4.
­1/27
­1/8
­7/4
­3
5.
6.
7.
8.
16
­5/4
­81
­1/45
9. 0.575
10. ­16.8 ℉
11. ­1/2x + 2
12. ­2y + 6
13. 2z + 4
2.6.notebook
2.6 Practice Answers
October 23, 2015
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