Write the expression as a complex number in the form a + bi.
+ 
A. -15 + 0i
B. 0 + 56i
C. 0 - 15i
D. 0 + 15i
Answer: D
Mathematics
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Solve the equation. Express the solution in scientific notation.
= 6.7 × 10-8
A. {1.34 × 10-8} B. {1.34 × 108} C. {13.4 × 10-8} D. {134 × 10-9}
Mathematics
Find the domain of the function.H(q) = 
A. 
B. {q|q ? 6}
C. {q|q ? -6}
D. {q|q is any real number}
Mathematics
Solve the equation.4x - 4 = 5(x - 9)
A. -41 B. 49 C. -49 D. 41
Mathematics
Find the coordinates of the midpoint of the line segment PQ.P(9y, 2), Q(10y, 5)
A. 
B. (19y, 7)
C. 
D. (y, 3)
Mathematics