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zmey [24]
3 years ago
7

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
Mathematics
1 answer:
Jobisdone [24]3 years ago
4 0

Answer:

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%

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Answer:

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2 years ago
Which expression is equivalent to (4x + 7y) + 5z?
Oliga [24]
<h3>(4x + 7y) + 5z = 4x + (7y + 5z)</h3>

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2 years ago
Can someone help me with this?
baherus [9]

Answer:

18

Step-by-step explanation:

AB = AW + WB

But AW also equals WB because of the bisecting point

x + 6 = 3x

6 = 2x

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AW = 3 + 6 = 9

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Marina correctly simplified the expression StartFraction negative 4 a Superscript negative 2 Baseline b Superscript 4 Baseline O
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Step-by-step explanation:

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6 0
2 years ago
Which is bigger 11/18 or 5/14
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Among the fractions given in this question 11/18 and 5/14,  the largest fraction is: 3/5.

  • Step-by-step explanation:

To find out which fraction is the largest, just divide the numerator by the denominator of the ratio and make the comparisons between them, thus defining which is the largest by decimal places or the largest number.

  • Resolution:

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\large \sf \dfrac{5}{14} \rightarrow 5\div14\rightarrow 0{,}35714285714

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