Question 13 of 47 What is the sum of the complex numbers below?

(5-8i) + (1-11i)

a. 6+19i
b. -6+19i
c. -6-19i
d. 6-19i​

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Mr. rose asked his students to draw a quadrilateral with 4 unequal sides. draw an example of this kind of quadrilateral.