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Yakvenalex [24]
3 years ago
7

The bee population is increasing by 15% each year. If there were 100,000 bees when tracking began and now there are 3,000,000 be

es. How long has the tracking been taking place, to the nearest whole year?
Mathematics
1 answer:
Ostrovityanka [42]3 years ago
8 0

Answer:

26 years

Step-by-step explanation:

here is a equation 3,000,000=100,000(1.15x)

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Ms. Nina has 10 lbs of 25% sugar syrup. How much water does she need to add to make 10% sugar syrup?
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\bf \begin{array}{lccclll}
&\stackrel{lbs}{syrup}&\stackrel{concentration~\%}{syrup}&\stackrel{concentration}{amount}\\
&------&------&------\\
\textit{25\% syrup}&10&0.25&2.5\\
\textit{pur water}&x&0.00&0.00x\\
------&------&------&------\\
\textit{10\% mixture}&y&0.10&0.10y
\end{array}
\\\\\\
\begin{cases}
10+x=\boxed{y}\\
2.5+0.00x=0.10y\\
----------\\
2.5 = 0.10\left( \boxed{10+x} \right)
\end{cases}
\\\\\\
2.5=1 + 0.10x\implies 1.5=0.10x
\\\\\\
\cfrac{1.5}{0.10}=x\implies 15=x
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