2­4 Consectuive Integers.notebook
September 27, 2013
9­27 Honors Algebra Warm­up (no calculator)
Write an equation for three consecutive numbers with a sum of 60 if x is the least of the numbers. Then solve the equation to find the three numbers.
2­4 Consectuive Integers.notebook
HW: 2­1 pgs. 74 ­75 #25, 26, 41­43, 47, 50­52
25. P=2(a + b)
26. V = πr2h
41. 4a + 15
42. Let a =advertisement min.
Then 4a + 15 is entertainment min
a + (4a + 15) = 60
43. 9 min
47.
50. C
51. J
52. C
2­2 p. 84 #53­54
53. C
54. F
September 27, 2013
2­3 pgs. 88­90 #27, 44­48, 54, 57, 58
27. about 95 ft
44. ­32
45. 2 1/2 n = 1 1/5; → 12/25
46. 1 1/3 b = ­4.82; → ­3.615
47. 0.48 s
48. 0.02 s
54. 12
2­4 p. 95 #15 ­ 24
12. ­6
14. ­7
16. ­6
18. ­48
20. ­27
22. 57
2­4 Consectuive Integers.notebook
September 27, 2013
2­4 Consecutive integers: integers in counting order such as 7, 8, and 9.
Consecutive even integers: begin with an even integer and count by two
Consecutive odd integers: begin with an odd integer and count by two
2­4 Consectuive Integers.notebook
September 27, 2013
Examples: Write an equation and solve.
1: Find three consecutive odd integers who sum is 57. 2: Find five consecutive even integers with a sum of 10.
Essential Questions: 1. Why does an equation to find consecutive odd integers look like an equation to find consecutive even integers?
Both odds and evens are calculated by adding 2 to the previous number.
2. Can the sum of two consecutive even numbers equal the sum of two consecutive odd numbers? No