Which expressions are equivalent to j+j+2kj+j+2kj, plus, j, plus, 2, k ? Choose all answers that apply: (Choice A) A 2jk2jk2, j, k (Choice B) B 2(j+j+k)2(j+j+k)2, left parenthesis, j, plus, j, plus, k, right parenthesis (Choice C) C None of the above

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.

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15