Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary. x + y - 2z - 8 = 03x + z + 6 = 02x - y + 3z + 14 = 0
A. {(x, 7x + 4, -3x - 6)}
B. {(x, 7x - 4, -3x - 6)}
C. {(x, -7x + 4, -3x - 6)}
D. {(x, -7x - 4, -3x - 6)}
Answer: D
Mathematics
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Find the vertex, the y-intercept, and the x-intercepts (if any exist), and graph the function.p(x) = 2x2 + 4x + 
A. 
Vertex (1, 3)
no x-int;
y-int = (0, 5)
B. 
Vertex (-1, 3)
no x-int;
y-int = (0, 5)
C. 
Vertex (-1, 
)
no x-int;
y-int = (0, 
)
D. 
Vertex (1, 
)
no x-int;
y-int = (0, 
)
Mathematics
Fill in the blank with one of the words or phrases listed below. 
Two angles that have a sum of 90° are called 
angles.
A. supplementary B. acute C. straight D. complementary
Mathematics
Determine whether f is a geometric sequence.
A. Yes B. No
Mathematics
Evaluate the permutation. Round to three decimal places when appropriate.P(23, 2)
A. 506 B. 23 C. 10,626 D. 2.585 × 1022
Mathematics