Find two square roots for the complex number. Leave your answers in trigonometric form.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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Solve the problem.Find the average value of f(x, y, z) = 3x + 8y + 5 over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
.
A. 
B. 140
C. 104
D. 68
Mathematics
Factor by grouping.18r2 + 45ry - 2xr - 5xy
A. (2r + 5y)(x - 9r) B. (2r + 5y)(9x - r) C. (5r + 2y)(9r - x) D. (2r + 5y)(9r - x)
Mathematics
Use a calculator to evaluate.7342
A. 538,756 B. 1,468 C. 736 D. 734
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."The sum of a number and 79
A. x + 79 B. 79 C. x - 79 D. 79x
Mathematics