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Lerok [7]
3 years ago
9

Select the expression that equals 9-(-15) a.9+(15) b. -9+15 c. 9+(-15) d. -9+-15

Mathematics
1 answer:
madreJ [45]3 years ago
4 0

Answer:

Step-by-step explanation: PURPLE

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If LM = 5 and MN = 5 what is LN
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Which matrix represents the system of equations shown below? 2x-y=-6 and x-6y=13​
dezoksy [38]

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The first matrix contains the coefficients of the x- and y- values for both equations (top row is the top equation and the bottom row is the bottom equation. The second matrix contains what each equation is equal to.

\begin{array}{c}2x-y\\x-6y\end{array}\qquad \rightarrow \qquad \left[\begin{array}{cc}2&-1\\1&-6\end{array}\right] \\\\\\\begin{array}{c}-6\\13\end{array}\qquad \rightarrow \qquad \left[\begin{array}{c}-6\\13\end{array}\right]

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