Simplify by using the properties of complex numbers.(8 - 4i)(4 + 7i)

A. 60 - 40i
B. 72 + 4i
C. 4 - 72i
D. 60+ 40i


Answer: D

Mathematics

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Solve the problem.A realtor has a base salary of $70,500 per year plus $1500 per house sold. If we let h represent the number of houses she sells in a year, build a variable expression for the total amount of money she will make that year.

A. 70,500 + 1500 + h B. 70,500 + 1500h C. 70,500h + 1500 D. (70,500 + 1500)h

Mathematics

Graph the function.Use the graph of f(x) = 2x to obtain the graph of g(x) = 2x + 3.

A.

B.

C.

D.

Mathematics

Find the missing parts of the triangle. If necessary, round angles to the nearest degree and give exact values of side lengths.

A. B = 90°, C = 60°, b = 6
B. no such triangle
C. B = 60°, C = 90°, b = 6
D. B = 60°, C = 90°, b = 6

Mathematics

Find the area of the geometric figure.Trapezoid5 m8 m

A. 52 sq m B. 80 sq m C. 160 sq m D. 26 sq m

Mathematics