In the complex number system, which of the following is equal to (14 - 2i)(7 + 12i)? (Note: i = V-1)
A) 74
B) 122
C) 74 + 154i
D) 122 + 154i

Explain how the quotient of powers was used to simplify this expression.

If twice a number is at least three less than four times the number, which of the following are true? let n represent the number.

The thickness of photoresist applied to wafers in semiconductor manufacturing at a particular location on the wafer is uniformly distributed between 0.2070 and 0.2171 micrometers.(a) determine the proportion of wafers that exceeds 0.2125 micrometers of photoresist thickness. (round your answer to 3 decimal places.)enter your answer in accordance to the item a) of the question statement(b) determine the mean of x. (round your answer to 4 decimal places.)enter your answer in accordance to the item b) of the question statement micrometers(c) determine the variance of x. (round your answer to 8 decimal places.)enter your answer in accordance to the item c) of the question statement micrometers2