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Sergeu [11.5K]
2 years ago
5

Four more than thrice a number is greater than forty

Mathematics
1 answer:
Svetlanka [38]2 years ago
8 0

Answer:

The unknown number is greater than equal to 12

Step-by-step explanation:

If we need to solve the equation will be

let the number be x

4+3x\geq 40

3x \geq 40-4

3x \geq 36

x \geq  36/3

x \geq  12

This means x is greater or equal to 12

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2 years ago
During normal breathing, about 12% of the air in the
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<h3>What is an equation?</h3>

The equation in mathematics is the relationship between the variables and the number and establishes the relationship between the two or more variables.

It is given in the question that:-

During normal breathing, about 12% of the air in the lungs is replaced after one breath

If the initial amount of air in the lungs is 500 mL

how much of the original air is present after 8 breaths?

The calculation for the eduction of the air will be done by the following equation:-

\rm =Volume \ present\times (0.88)^n\\\\\\= 500\times (0.88)^8

=179.88 ml

Hence original air present after 8 breaths will be equal to 179.81 ml.

To know more about equations follow

brainly.com/question/2972832

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