What number decreased by 3.5 equals to 12.7 ?

2 answers:

5 0

What number = x

x - 3.5 = 12.7

Isolate the x, add 3.5 from both sides

x - 3.5 (+3.5) = 12.7 (+3.5)

x = 12.7 (+3.5)

x = 16.2

16.2 is your answer

hope this helps

RUDIKE [14]3 years ago

4 0

Let's make an equation. We need to find a number that when 3.5 is subtraced from it is 12.7. The equation would look like.
X-3.5=12.7
Now, we need X by itself, so we need to add 3.5 to both sides.
X=12.7+3.5
X=16.2
If the number is 16.2, let's check.
16.2-3.5=12.7
The number is 16.2.

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$\bf \textit{Amount of Population Growth}\\\\
A=Ie^{rt}\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &5052\\
I=\textit{initial amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed time}\to &0\\
\end{cases}
\\\\\\
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-------------------------------\\\\$

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\\\\\\
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\\\\\\
\cfrac{200000}{5052}=e^{0.0344t}\implies 
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\\\\\\
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