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1. |
Solve  for x by the method of determinants. |
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A. |
11 |
B. |
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C. |
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D. |
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Hint |
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2. |
Solve  by the method of determinants. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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3. |
Solve  by the method of determinants. |
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A. |
(2, -1, -2) |
B. |
(-1, 1, -2) |
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C. |
(2, -2, 1) |
D. |
(1, -1, 2) |
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Hint |
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4. |
Vince and Brian each need two kinds of items at the store. Vince bought 10 of item A and 14 of item B and spent $97. Brian bought 8 of item A and 25 of item B, and spent $119. How much did each item cost? |
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A. |
item A = $5.50
item B = $3 |
B. |
item A = $5
item B = $3.50 |
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C. |
item A = $4.50
item B = $3 |
D. |
item A = $750
item B = $3.50 |
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Hint |
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5. |
Solve  by the method of determinants. Round to the nearest hundredth. |
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A. |
(1.86, 2.20) |
B. |
(-1.86, -2.20) |
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C. |
(1.68, 4.40) |
D. |
(2.46, 1.20) |
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Hint |
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