course Mth 151 ބͲʼ]Wƛwassignment #019 019. `query 19 College Algebra 10-26-2008
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23:50:27 query 4.2.6 53812 in expanded form. What is 53812 in expanded form?
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RESPONSE --> 5*10^4 +2*10^3 + 1*10^2 +8 * 10^0 confidence assessment: 3
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23:50:33 STUDENT RESPONSE: (5*10^4) +(2*10^3) + (1*10^2) +(8 * 10^0)
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RESPONSE --> OK self critique assessment: 3
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23:51:50 query 4.2.20 536 + 279 in expanded notation Write 536 + 279 in expanded notation.
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RESPONSE --> 5 * 10^2 + 3 * 10^1 + 6 * 10^0 + 2 * 10^2 + 7 * 10^1 + 9 * 10^0 8 * 10^2 + 10* 10^1 + 15* 10^0. 10 * 10^1 = 10^2 9 * 10^2 + 0 * 10^1 + 15 * 10^0. 15 * 10^0 = 10 * 10^0 + 5 * 10^0 = 10^1 + 5 * 10^0 9 * 10^2 + 1 * 10^1 + 5 * 10^0. 915 confidence assessment: 3
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23:51:58 ** We write this sum as 5 * 10^2 + 3 * 10^1 + 6 * 10^0 + 2 * 10^2 + 7 * 10^1 + 9 * 10^0 ______________________________ 8 * 10^2 + 10* 10^1 + 15* 10^0. Since 10 * 10^1 = 10^2 we can write this as 9 * 10^2 + 0 * 10^1 + 15 * 10^0. Since 15 * 10^0 = 10 * 10^0 + 5 * 10^0 = 10^1 + 5 * 10^0 we rewrite this as 9 * 10^2 + 1 * 10^1 + 5 * 10^0. This result is expressed in our place-value system as 915. **
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RESPONSE --> OK self critique assessment: 3
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