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yvngtazz
16.08.2020 •
Mathematics
How to do this question plz answer my question
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Ответ:
510,064,471,910,000 m² or 5.1 x 10^14 m²
Step-by-step explanation:
4πr²
if the diameter is 12742, then the radius is 6371
4π(6371)²
510,064,471.91 km²
510,064,471,910,000 m²
Ответ:
510064471909788 m²
Step-by-step explanation:
diameter=12742 so the radius r=12742/2=6371=6371*1000=6371000
A=4πr²
A=4π(6371000)²
A=162358564000000π =510064471909788 m²
Ответ:
The value of the house on 1st January 2015 was of $650,000.
Step-by-step explanation:
Decimal multipliers:
For a increase of a%, the decimal multiplier is given by![\frac{100+a}{100}](/tpl/images/1159/3401/083b1.png)
For a decrease of a%, the decimal multiplier is given by![\frac{100-a}{100}](/tpl/images/1159/3401/830e0.png)
Rami bought a house on 1st January 2015.
For a value of x.
In 2015 the house increased in value by 15%.
This means that x is multiplied by![\frac{100+15}{100} = \frac{115}{100} = 1.15](/tpl/images/1159/3401/a384a.png)
In 2016 the house decreased in value by 8%.
This means that 1.15 times x is multiplied by![\frac{100-8}{100} = \frac{92}{100} = 0.92](/tpl/images/1159/3401/8f233.png)
On 1st January 2017 the value of the house was $687700.
The value of these multiplications is 687700.
What was the value of the house on 1st January 2015?
This is x, so:
The value of the house on 1st January 2015 was of $650,000.