Find $x$ so that the vectors $\begin{pmatrix} 2 \\ 5 \end{pmatrix}$ and $\begin{pmatrix} x \\ -3 \end{pmatrix}$ are orthogonal.
Question:
Find $x$ so that the vectors $\begin{pmatrix} 2 \\ 5 \end{pmatrix}$ and $\begin{pmatrix} x \\ -3 \end{pmatrix}$ are orthogonal.
Answer:
Let's think step by step.

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\frac{15}{2}
Find $x$ so that the vectors $\begin{pmatrix} 2 \\ 5 \end{pmatrix}$ and $\begin{pmatrix} x \\ -3 \end{pmatrix}$ are orthogonal.
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