Given that
a
= 4 cm and
b
= 6 cm, work out
θ
rounded to 1 DP.

Find the multiplicative inverse of 8-12i

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.

3x + 4y = 5 x- 3y = -7 solve by substitution