(100 points)+ ! perimeter of a triangle
only answer if your answer is as a number, not an equation. 100% sure it’s right, explanation included, etc.

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

Twelve less than a number is at most 20

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.