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Shtirlitz [24]
3 years ago
10

The quantities x and y are proportional.

Mathematics
2 answers:
irga5000 [103]3 years ago
8 0

Answer:

r=1/4

Step-by-step explanation:

y=1/4*x

2=1/4*8

1/4*8=2

musickatia [10]3 years ago
8 0
Y=1/4 8/2 is correcto
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keeping in mind that 21 months is more than a year, since there are 12 months in a year,  then 21 months is really 21/12 years.


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\bf ~~~~~~ \stackrel{\textit{account B}}{\textit{Simple Interest Earned}} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill &28\\ P=\textit{original amount deposited}\dotfill \\ r=rate\to 4.9\%\to \frac{4.9}{100}\dotfill &0.049\\ t=years\to \frac{21}{12}\dotfill &\frac{7}{4} \end{cases} \\\\\\ 28=P(0.049)\left( \frac{7}{4} \right)\implies \cfrac{28}{(0.049)\left( \frac{7}{4} \right)}=P\implies \boxed{326.53\approx P}


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3 years ago
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Step-by-step explanation:

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