Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-1, -2)}
B. no solution; ?
C. {(-2, -1)}
D. {(1, 2)}
Answer: A
Mathematics
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Graph the equation.
+ 
= 1
A. 
B. 
C. 
D. 
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Simplify the expression.
A. tan(2x - 3y) B. tan(-3y) C. tan 3y D. tan(x - 3y)
Mathematics
Solve the proportion.
= 
A. 4 B. 40 C. 1.0 D. 1.00
Mathematics
Write the expression in the standard form a + bi.2i15 - i7
A. i B. -1 C. 1 D. -i
Mathematics