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pentagon [3]
4 years ago
15

Explain how tobsolve the equation 312.50=a+0.25a to find the value of a.​

Mathematics
1 answer:
antiseptic1488 [7]4 years ago
8 0

Answer:  A=250

Step-by-step explanation:

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7/15% of a quantity is a equal to what fraction of the quantity?
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Answer:

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n a particular day, the wind added 2 miles per hour to Alfonso's rate when he was cycling with the wind and subtracted 2 miles p
goldfiish [28.3K]
Recall your d = rt, or distance = rate * time

notice, the time he took to cover 63 miles with the wind, is the same amount of time he took against it with 51 miles only, let's say, he took "t" hours long
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thus    \bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
\textit{with the wind}&63&r+2&t\\
\textit{against the wind}&51&r-2&t
\end{array}\\\\
-----------------------------\\\\

\begin{cases}
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51=(r-2)t\\
----------\\
51=(r-2)\left( \boxed{\cfrac{63}{r+2}} \right)
\end{cases}

solve for "r"
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