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konstantin123 [22]
3 years ago
13

Two numbers have the ratio 7:5. Their difference is 12.Find the numbers.​

Mathematics
1 answer:
cupoosta [38]3 years ago
3 0

Answer:

42 and 30

Step-by-step explanation:

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\bf n^{th}\textit{ term of an arithmetic sequence}
\\\\
a_n=a_1+(n-1)d\qquad
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\[-0.5em]
\hrulefill\\
a_1=1\\
d=2\\
n=7
\end{cases}
\\\\\\
a_7=1+(7-1)2\implies a_7=1+12\implies a_7=13

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