Find the solution to the system of equations by the substitution method. x - 2y = 199x - 3y = 81
A. (6, -6)
B. (6, -5)
C. (7, -6)
D. (-7, -5)
Answer: C
Mathematics
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Determine the angle between u and v. Give the angle in degrees rounded to the nearest tenth of a degree.u = 3j, v = 9i - 3j
A. 71.6° B. 108.4° C. 161.6° D. -18.4°
Mathematics
Find the product of the complex number and its conjugate.-7 + i
A. 56 B. 98 C. 42 D. 0
Mathematics
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Mathematics
For the equation, create a table, -3 ? x ? 3, and list points on the graph.y = x + 4
A. 
(-3, -7), (-2, -6), (-1, -5), (0, -4), (1, -3), (2, -2), (3, -1)
B. 
(-3, 7), (-2, 6), (-1, 5), (0, 4), (1, 3), (2, 2), (3, 1)
C. 
(-3, 1), (-2, 2), (-1, 3), (0, 4), (1, 5), (2, 6), (3, 7)
D. 
(-3, -1), (-2, -2), (-1, -3), (0, -4), (1, -5), (2, -6), (3, -7)
Mathematics