Please help I have limited time. What is the purpose of multiplying by the complex conjugate of the denominator when finding the quotient of complex numbers?

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Arational number that is equivalent to -20/4?

You are looking for your first credit card. you plan to use this credit card only for emergencies and to pay the credit card balance in full each month. which credit card feature is most important? a. no annual fee b. low apr c. generous rewards program d. no balance transfer fee select the best answer from the choices provided

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)