Mathematics: 19-10x+4=4x-5 i dont understand this equation

19-10x+4=4x-5 i dont understand this equation - id19104451780314, beyattatsymbal123

Ответ:

lippj0228

30.12.2021

$In\ this\ equation\ you\ must\ find\ x\ witch\ is\ solution\ for\ equation:\\\\19-10x+4=4x-5\\\\-10x-4x=-5-19-4\\\\-14x=-28\ \ \ \ \ \ \ \ |:(-14)\\\\x=2$

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Ответ:

carlinryan

10.08.2020

Mathematics

Increasing =2522000

years ago population =16000000

Step-by-step explanation:

Let years ago population

If initial amount =P, rate of increase and time

after years amount $(A)=P(1+\frac{r}{100})^t$

Hence A=18522000

$P=x\\r=5\%\\t=3\ years$

$18522000=x(1=\frac{5}{100})^3\\\\18522000=x(1.05)^3\\\x=\frac{18522000}{(1.05)^3}\\\\x=\frac{18522000}{1.1576625}\\\\x=16000000$

$3\ years\ ago\ population\ =16000000\\\\Increase=1852000-16000000\\\\=2522000$

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19-10x+4=4x-5 i dont understand this equation

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