Solve the system by the elimination method. x + 9y = 273x + 10y = 30
A. {(0, 3)}
B. {(-3, 0)}
C. ?
D. {(1, 2)}
Answer: A
Mathematics
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A. 30, 30, and 30 B. 20, 15, and 15 C. 20, 20, and 20 D. 30, 15, and 15
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Select the graph of 
over the interval. Describe the part of the graph obtained in this case.
?
?
A. ?
Left half of circle
B. ?
Left half of circle
C. ?
Left half of circle
D. ?
Left half of circle
E. ?
Left half of circle
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Use matrix inversion to solve the system of linear equations.
?
?
?
?
What will be an ideal response?
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Use a graphing utility to graph the equation. Use the graph to approximate the values of x that satisfy each inequality.
?
Equation:
?
Inequality:
?
A. ?
?
B. ?
C. ?
?
D.
E. ?
Mathematics