Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(7 + 4i)(9 + 6i)
A. 87 - 6i
B. 24i2 + 78i + 63
C. 39 + 78i
D. 39 - 78i
Answer: C
Mathematics
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A. (x - 2)3 B. (x - 2)(x2 + 2x + 4) C. (x + 2)(x2 - 2x + 4) D. Prime polynomial
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Find the absolute value.
A. 9
B. 
C. 
D. - 
Mathematics
Solve.If Gloria received a 5% raise and is now making $24,150 a year, what was her salary before the raise?
A. $23,150 B. $23,000 C. $22,150 D. $24,000
Mathematics
Solve the system of equations using substitution.
A. x = -8, y = 7; x = -7, y = 8 or (-8, 7), (-7, 8) B. x = -8, y = -7; x = -7, y = -8 or (-8, -7), (-7, -8) C. x = 8, y = -7; x = 7, y = -8 or (8, -7), (7, -8) D. x = 8, y = 7; x = -7, y = -8 or (8, 7), (-7, -8)
Mathematics