A parallelogram is a rhombus if the diagonals are perpendicular,
so check that the product of the slopes of AC and BD is -1. What
formula can you use?

Write the expression as a single natural logarithm. 2 in a - 4 in y

How do you determine if an ordered pair is a solution to a given equation?

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.