How many solutions does the system have? You can use the interactive graph below to find the answer.
\begin{cases} 3x-5y=15 6x-10y=30 \end{cases}
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3x−5y=15
6x−10y=30
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last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

a. she will receive a refund of $278.

step-by-step explanation:

step-by-step explanation:

idk the answer i want to say 10 but then it would be equal so try 9 but then yeah so yeah we love edgen