Perform the indicated operation. Write the result in the form a + bi.(-2.2 + 4.4i) - (-3.6 - 0.6i)
A. -5.8 + 3.8i
B. 1.4 + 5i
C. 2.2 + 4.2i
D. 2.2 - 4.2i
Answer: B
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Evaluate the spherical coordinate integral.
A. 
B. 10
C. 10?
D. 
?
Use the given information to write an equation. Let x represent the number described in the exercise. Then solve the equation and find the number.If 5 times a number is added to -4, the result is equal to 9 times the number. Find the number.
A. 5x + (-4) = 9x; -1 B. 14x - 9x = 4; 1 C. 4x + (-4) = 9x; 1 D. 9(5x - 4) = -4; -1
For the function represented in the graph, determine the domain or range, as requested.Find the domain.
A. [-5, 5] B. [-1, 4] C. [-4, 7] D. [4, -4]
Solve the equation by completing the square. Then (i) give the exact solutions and (ii) give the solutions rounded to the nearest thousandth.x2 = 7 - 4x
A. (i) {-2 ± 2
} (ii) {4.633}
B. (i) {-2 ± 
} (ii) {1.317, -5.317}
C. (i) {-1 ± 
} (ii) {2.317, -4.317}
D. (i) {2 + 
} (ii) {5.317}