Verify that the matrix is invertible and find its inverse.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 does not exist.
Answer: B
Mathematics
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A. Estimate: 900; Actual: 1083.81 B. Estimate: 1100; Actual: 1084.81 C. Estimate: 900; Actual: 1093.81 D. Estimate: 1100; Actual: 1083.81
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Factor the difference of two squares.343x2 - 112
A. 7(7x - 4)2 B. 7(7x + 4)(7x - 4) C. 14(7x + 4)(7x - 4) D. 7(7x + 4)2
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Use a scientific calculator to approximate the common logarithm. Round to four decimal places.log 2507
A. 3.4009 B. 3.3974 C. 3.3992 D. 7.8268
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Find the angle rounded to the nearest tenth of a degree.sin B = 0.3290
A. B = 19.2 o B. B = 18.2 o C. B = 72.8 o D. B = 19.6 o E. B = 54.2 o
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