Write the expression in the standard form a + bi.Given z = 3 + 9i and w = -8 + i, evaluate .

A. 11 + 8i
B. 11 - 8i
C. -5 + 10i
D. -11 - 8i


Answer: B

Mathematics

You might also like to view...

Write the equation in standard form. Then identify the vertex of the parabola.y = x2 - 8x + 5

A. y = (x - 4)2+ 5; (-4, 5) B. y = (x - 4)2 - 11; (4, -11) C. y = (x + 4)2 - 11; (-4, -11) D. y = (x - 4)2 + 5; (4, 5)

Mathematics

Determine whether the statement is true or false.-19 > -14

A. False B. True

Mathematics

Graphically estimate the x- and y-intercepts of the graph. ? ?

A. x-intercept: (±3, 0)y-intercept: (0, 81) B. x-intercept: (3, 0)y-intercept: (0, 81) C. x-intercept: (-3, 0)y-intercept: (0, 81) D. x-intercept: (±3, 0)y-intercept: (0, 9) E. x-intercept: (0, 3)y-intercept: (0, 81)

Mathematics

Use a determinant and the given vertices of a triangle to find the area of the triangle. ? ?

A. ?
B. 4
C. ?
D.
E. 7

Mathematics