Which pair of complex numbers has a real-number product?

(1 + 2i) (8i)

(1 + 2i) (2 - 5i)

(1 + 2i) (1 - 2i)

(1 + 2i) (4i)

From a phone survey, a researcher determined that the true estimate for the proportion of voters who will reelect the mayor is likely to be in the interval (0.39, 0.47). What is the survey's margin of error? Enter your answer in the box.

Did I do this Math Right

Arlene sleeps for 7hr20min each night. How many hours does she sleep in a week? Write your answer as a mixed number, e. g., 1312.

Xavier needs to find the length and width of his rectangular yard. he knows that the area is 5x^2 - 48x-20. what expression would represent the length and width

Solving a quadratic equation by completing the square. De Solve the quadratic equation by completing the square. x^2 - 12x+33 = 0 First, choose the appropriate form and fill in the blanks with the correct numbers. Then, solve the equation.

What is log x-log 2=log 17

The length of a garden is 5m greater than the width. the area is 66m^2. Find the dimensions of the garden.

A total has a number of meeting rooms, m available for events. Each meeting room has 325 chairs. Write an equation to represent C, the total number of chairs, in all the meeting rooms at the hotel.

X g (x) -2 2 -1 0 0 2 1 8 Which of the following is a true statement for this function? A) The function is decreasing from x = 0 to x = 1. B) The function is decreasing from x = - 1 to x = 0. C) The function is increasing from x = 0 to x = 1.

Find the value for x? X-5+5x-12=25