As a result of the installation of a muffler, the noise level of an engine was reduced from 89 to 72 decibels. find the percent decrease in the intensity level of the noise due to the installation of the muffler.(round your answer to the nearest whole number

Step-by-step explanation:

Using the formula

Initial -final/initial =%/100

89-72/89 =%/100

17/89 =%/100

Making %subject of the formula

% =17*100/89

So % =1700/89

%= 19.101

Therefore rounding off the answer we have

X=19%

answer: 43/157

this is the answer and if you try to prove me wrong your a meanie

answer: i think you should do the math and pay attention in class : )

step-by-step explanation:

that is truly what   think but if i get the answer i will