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course Math 158
September 15 around 4:00 a.m. Assignment 1 (according to work problems via vhmthphy site)Please advise if submission is not completed correctly in any way.
Assignment 1 WORK NOW problems
13. (A U B) ^ C= {1,2,3,4,5,6,7,8,9} ^ {1,3,4,6} = {1,3,4,6}
17. Compliment of A ^ B = {0,1,2,3,5,6,7,8,9}
23. a.) {1}
b.) {0,1}
c.) {0,1,1/2,1/3,1/4}
d.) none in this set
27. 18.9526 a.) Rounded to 3 decimal places is 18.923, b.) truncated to 3 decimal places is 18.952
39. 3+2=5
51. -6+4*3=-6+12=6
57. 6-[3*5+2*93-2)]=6-[15+2*1]=6-17=-11
65. (4+8)/(5-3)=12/2=6
67. (3/5)*(10/21)=.6*.47619=.2857
@& This is a decimal equivalent, not an exact answer. The exact answer would be a reduced fraction.*@
87. 6(x+4)=6x+24
OTHER PROBLEMS MENTIONED: 8,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71,74,77,80,83,86,89,92,95
8. True because rational and irrational numbers are considered real numbers.
11. A intersects ^ B = {4}
14. (A^B) U C = {4} U C = {1,3,4,6}
17. See above
20. Compliment of B ^ Compliment of C = {0,2,5,7,8,9} ^ {0,2,5,7,8,9} = {0,5,9}
23. See above
26. a.) None b.) None c.) {1/2,103} d.) {-sqrt2,pi,sqrt2}
29. 28.65319 a.) 25.653 rounded b.) 28.653 truncated
32. .05388 a.) .054 rounded b.) .053 truncated
35. 3/7 = .42857143 a.) .429 rounded b.) .428 truncated
38. 81/5 = 16.2 a.) 16.2 b.) 16.2
41. (x+2) = (3*4)
44. 2x = 4+6
47. x/2 = 6
50. 6-4+3 = 5
53. 4+5-8=1
56. 2-.5=1.5
59. 2*(3-5)+8*2-1=2*-2+16-1=-4+16-1=11
62. 2-5*4-[6(3-4)]=2-20-[-6]=-12
65. (4+8) / (5-3) = 12/2 = 6
68. (5/9) * (3/10) = .556 * 0.3 = 0.167
71. (3/4) + (2/5) = 15/20 + 8/20 = 23/20=1.15
74. (8/9) + (15/2) = 16/18 + 135/18 = 151/18= 8.389
77. (1/30) - (7/18) = 0.033-0389=-.0059
80. (6/35) - (3/14) = .0171-.214=-0.043
@& The answer to this problem and the preceding is a fraction, not a decimal approximation.*@
83. (1/2)*(3/5)+(7/10) =.5*.6+.7=.3+.7=1
86. 3*(5/6)-(1/2)=2.5-.5=2
89. x(x-4)=xsquared - 4x
92. 3[(2/3)x + (1/6)] = 2x+0.167
95. (x-2) (x+1)= (xsquared+1) - (2x+6)=xsquared-x+2
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@& You appear to be doing fine with these problems, but be sure to see my note on fractions vs. decimal approximations.*@
@& This is not the appropriate format for submitting your work.
You do not appear to have completed the Orientation and Startup for your course. You need to do that in order to learn how to submit your work.
The only thing that is required is that you complete the Query, using the conventions you learn in the Orientation and Startup.
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