1.

Which system of equations represents the following statements? The sum of two numbers is ten. One number is five times the other.

A. \[\begin{matrix} xy=10\\ y=5x\\ \end{matrix}\]
B. \[\begin{matrix} xy=10\\ y=x+5\\ \end{matrix}\]
C. \[\begin{matrix} x+y=10\\ y=5x\\ \end{matrix}\]
D. \[\begin{matrix} x+y=10\\ y=x+5\\ \end{matrix}\]
Answer» D. \[\begin{matrix} x+y=10\\ y=x+5\\ \end{matrix}\]


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