Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(7 + 4i)(5 - 6i)
A. 11 + 62i
B. 59 + 22i
C. 59 - 22i
D. -24i2 - 22i + 35
Answer: C
Mathematics
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Express the number in scientific notation.892,784,000,000
A. 8.92784 × 109 B. 8.92784 × 1011 C. 892.784 × 109 D. 8,927.84 × 108
Mathematics
Translate the question into a proportion. Do not solve.What percent of 250 is 170?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Solve the inequality and graph. Express your answer in interval notation.-4(-2 - x) < 6x + 19 - 11 - 2x
A. (-?, 8)
B. ?
C. (-?, 0)
D. (-?, ?)
Mathematics
Solve the inequality.x + 
< 19
A. (-?, 0) or (9, 10) B. (0, 9) or (9, 10) C. (-?, 0) or (10, ?) D. (0, 9) or (10, ?)
Mathematics