course Mth 151 Ǘݗ{Ovv]Φ
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09:36:10 ** In terms of the picture (2 circles, linked, representing the two sets) there are 28 in B and 10 in A ^ B so there are 18 in the region of B outside of A--this is the region B-A. There are 25 outside of A, and 18 of these are accounted for in this region of B. Everything else outside of A must therefore also be outside of B, so there are 25-18=7 elements in the region outside of both A and B. A ' U B ' consists of everything that is either outside of A or outside of B, or both. The only region that's not part of A ' U B ' is therefore the intersection A ^ B, since everything in this region is inside both sets. A' U B' is therefore everything but the region A ^ B which is common to both A and B. This includes the 18 elements in B that aren't in A and the 7 outside both A and B. This leaves 40 - 18 - 7 = 15 in the region of A that doesn't include any of B. This region is the region A - B you are looking for. **
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RESPONSE --> 18 in B outside of A. 7 outside of the regions A and B. A is given by 40-18-7 so that 15 are in region A. self critique assessment: 0
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09:40:21 query 2.4.18 wrote and produced 2, wrote 5, produced 7 &&&& How many did he write but not produce?
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RESPONSE --> He wrote 3 projects that he did not produce. Since he wrote a total of 5 projects, and only produced 2 of them (the other 5 projects could be projects from another artist), there are still 3 projects left that he wrote yet still did not produce. confidence assessment: 1
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09:54:11 2.4.24 9 fat red r, 18 thn brown r, 2 fat red h, 6 thin red r, 26 fat r, 5 thin red h, 37 fat, 7 thin brown ......!!!!!!!!...................................
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RESPONSE --> There are 37 fat chickens (9 fat red roosters, 2 fat red hens, 26 fat roosters), 22 red chickens (9 fat red roosters, 2 fat red hens, 6 thin red roosters, 5 thin red hens) 50 male chickens (26 fat roosters, 18 thin brown roosters, 6 thin red roosters) 2 fat but not male (2 fat red hens) 25 brown and thin (7 thin brown hens, 18 thin brown roosters) and 11 red and fat ( 9 fat red roosters, 2 fat red hens). confidence assessment: 2
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ͭfYyG assignment #004 004. `Query 4 College Algebra 02-01-2009