Mathematics > QUESTIONS & ANSWERS > Sophia Learning, College Algebra, Milestone 4 Questions and Answers Already Passed (All)
Sophia Learning, College Algebra, Milestone 4 Questions and Answers Already Passed
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College Algebra Unit 4 - Milestone 4 with answers!! 18 questions were answered correctly. 2 questions were answered incorrectly. 1 Angela is an electrical engineer who is testing the voltage of a ... circuit given a certain current and resistance. She uses the following formula to calculate voltage: The circuit she tests has a current of amps and a resistance of ohms. What is the voltage of the circuit? • volts • volts. correct • volts • volts RATIONALE The voltage of the circuit is the product of the current and resistance. Recall that we can write as and as . and can combine to . Now we can simplify the last term, , which contains the imaginary unit squared. Recall that the is equivalent to , which can be substituted in our expression. The expression multiplies to Next, combine like terms. Once we have expressed voltage in terms of , we need to multiply these two complex numbers by using FOIL. Multiply the first terms , the outside terms , the inside terms , and the last terms . Next, evaluate each multiplication. is replaced by . Next, evaluate . CONCEPT Complex Numbers in Electrical Engineering 2 Perform the multiplication and combine like terms. • • correct • • RATIONALE The voltage is equivalent to , or . times is equal to . Finally, combine like terms and . When FOILing, multiply the first terms, outside terms, inside terms, and last terms together. Once the binomials have been multiplied together, [Show More]
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Sophia Learning, College Algebra, Milestone 1,2,3,4,5& Final Latest Updated 100% Correct!!
18 questions were answered correctly. 2 questions were answered incorrectly. 1 Find the solution for x if |6x + 8|=32. • • • correct • RATIONALE To solve this equation, we will n...
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