Solve the linear system using an inverse matrix.
A. (-3, -2)
B. (2, 3)
C. (-2, -3)
D. (3, 2)
Answer: D
Mathematics
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Find the volume.Of a box 4.7 m × 3.1 m × 8 m
A. 198.4 m3 B. 116.56 m3 C. 45.167 m3 D. 176.72 m3
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Multiply or divide.
A. - 
B. 
C. 
D. - 
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Write the phrase as an algebraic expression. Let x represent the unknown number.Six more than a number
A. x - 6
B. 6x
C. 
D. x + 6
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Solve the problem with three unknowns.The sum of a student's three scores is 207. If the first is 13 points more than the second, and the sum of the first two is 3 more than twice the third, what was the first score?
A. 63 B. 55 C. 76 D. 68
Mathematics