Use a graphing utility to solve the system of linear equations and give the solution of the system.
A. 
x = 
, y = - 
, z = 9
B. 
x = 9, y = 5, z = 1
C. 
x = 1, y = 5, z = 9
D. 
x = 
, y = - 
, z = 9
Answer: C
Mathematics
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Match the equation with the appropriate graph.f(x) = 
A. 
B. 
C. 
D. 
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Find the indicated sum.-7 - 3 + 1 + . . . + [4 ? (10 - 1) - 7]
A. 143 B. 81 C. 220 D. 110
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State if the vectors a and b are perpendicular, parallel, or neither. If a and b are parallel, state whether they point in the same direction or in opposite directions.a = 
, b = 
A. Parallel, same directions B. Perpendicular C. Parallel, opposite directions D. Neither
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Solve the proportion.
= 
A. 12.3 B. 0.1 C. 29.4 D. 9.5
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