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gavmur [86]
2 years ago
9

Pls helpp 3/4 + 4/5 - 7/10 =?

Mathematics
2 answers:
Margarita [4]2 years ago
5 0

Answer:

3/4=0.75

4/5=0.8

7/10=0.7

0.75+0.8=1.55

1.55-0.7=0.85

Step-by-step explanation:

drek231 [11]2 years ago
5 0

Answer:

17/20 or 0.85

Step-by-step explanation:

3/4+4/5-7/10=x

convert to have common denominators

15/20+16/20-14/20=x

17/20=x

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Several students measured a 25-mm-long nail and wrote the measurements shown in the table below. Whose measurement had the great
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Answer:

Step-by-step explanation:

The decibel level of the sound of a monster truck is

Further explanation:

Decibel is defined as a unit which is used to measure the relative loudness or intensity of the sound.

In the question it is given that the intensity of the sound of a monster truck is watts per square inch.

The formula which is used to calculate the decibel level of a sound is as follows:

Here, represents the intensity of the sound of a monster truck and represents the threshold intensity of hearing at .

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The intensity of the sound of a monster is given in unit of per square inch.

The relation between per square inch and per square meter is as follows:

So, the intensity of a monster truck is converted into per square meter as follows:

This implies that the value of is watts per square meter.

Now, substitute the value of and in the equation .

The approximated value of the above equation is as follows:

From the above calculation it is concluded that the decibel level of the sound of a monster truck is .

Learn more:

A problem to complete the square of quadratic function brainly.com/question/12992613

A problem to determine the slope intercept form of a line brainly.com/question/1473992

Inverse function brainly.com/question/1632445

Answer details

Grade: Middle school

Subject: Mathematics

Chapter: Logarithms

Keywords: Logarithms, sound, intensity, power of sound, watts, decibel, decibel level, monster truck, logarithm function, unit, conversion of unit, square inch, square meter.

8 0
3 years ago
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