Simplify. (2a^2-9b)(4a+b) a. 8a^3+36a^2b-2ab-9b^2 b. 8a^3+2a^2b-36ab-9b^2 c. 8a^3-34ab-9b^2 d. 8a^3-9b^2

Find the cosine function that is represented in the graph.

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.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points