Write the expression in the standard form a + bi.(4 - 5i) + (2 + 9i)
A. 6 + 4i
B. 2 + 14i
C. 6 - 4i
D. -6 - 4i
Answer: A
Mathematics
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Give the domain and range of the relation.{(41, -3), (5, -2), (5, 0), (9, 2), (21, 4)}
A. domain: {41, 9, 5, 21}; range: {-3, -2, 2, 4} B. domain: {41, 9, 5, 21}; range: {-3, -2, 0, 2, 4} C. domain: {-3, -2, 2, 4}; range: {41, 9, 5, 21} D. domain: {-3, -2, 0, 2, 4}; range: {41, 9, 5, 21}
Mathematics
For the given functions f(x) and g(x), find f(x) ? g(x).f(x) = 5x6, g(x) = -4x4 + 8x2 - 1
A. -20x10 + 40x8 B. -20x4 + 40x2 - 5 C. -20x10 + 8x2 - 1 D. -20x10 + 40x8 - 5x6
Mathematics
Solve the equation on the interval 0 ? ? < 2?.cos ? - sin ? = 0
A. {
}
B. 
C. {
}
D. 
Mathematics
Write an equivalent expression using the distributive law.-9(x + 3)
A. -9x + 3 B. -9x - 27 C. 9x - 27 D. x - 27
Mathematics