19. (37 * 83) + (37 * 17)
3600
3700
370
20. 16*(17/8)
34
36
38
21. (0.25)(38) + (0.75)(38)
3.8
380
38
22. 12n + 27n
30n
40n
39n
23. 5x + 7 + 8x - 3
13x + 4
12x - 4
13x + 10
24. 3(x + 2) + 5(x - 3) - 7x + 4
2x - 5
x - 5
2x - 4
25. (-7)(-3)
-21
21
12
26. (5)(-3)
-15
15
5
27. (-4)(6)
24
12
-24
28. (-3x)(-2y)
5xy
-6xy
6xy
29. (-3)(5)(2)
-13
30
-30
30. (-1)(3)(-5)(6)
-90
48
90
31. 2(x - 3y) - 3(x - 2y)
0y - x
-x
x - y
32. (-1/2)n + (3/5)m + (5/2)n - (8/5)m
2n - m
n - 2m
2n + m
33. If n is an odd integer, find the next even integer.
n
n + 1
n + 2
34. If n is an odd integer, find the next two consecutive odd integers.
n + 2, n + 4
n + 1, n + 3
n, n + 2
Part 3
Multiple Choice: Choose the equation that matches the written expression. (Each question is worth 1 point)
35. The sum of two consecutive integers is 15.
n + n = 15
2n + 2 = 15
n + (n + 1) = 15
36. The product of two consecutive integers is 6.
n(n) = 6
2n + n = 6
n(n+1) = 6
37. The sum of three consecutive integers is 27.
3n + 6 = 27
n + (n + 1) + (n + 2) = 27
n + n + n = 27
38. The sum of three consecutive even integers is 12
n + (n + 2) + (n + 4) = 12
3n + 4 = 12
n + 6 = 12
39. The sum of two consecutive even integers is 2 more than twice the smaller integer.
n + (n + 2) - 2 = n
n + (n + 2) + 2 = 2n
n + (n + 2) = 2 + 2n
40. The sum of the least and greatest of three consecutive odd integers is -32
n + (n + 4) = -32
n + (n + 2) = 32
n + (n + 32) = 2
2007-06-20
04:45:20
·
6 answers
·
asked by
Anonymous
in
Science & Mathematics
➔ Mathematics