Solve the System of Linear Equations $\left\{ \begin{array} { l } 4 x + 2 y = 3 \\8 x - 10 y = - 9\end{array} \right.$

question 6

Multiple Choice

Solve the system of linear equations $\left\{ \begin{array} { l } 4 x + 2 y = 3 \\8 x - 10 y = - 9\end{array} \right.$ using an inverse matrix.

• A) \(\left[ \begin{array} { l }
• x \\
• y
• \end{array} \right] = \left[ \begin{array} { l }
• \frac { 9 } { 28 } \\\\
• \frac { 24 } { 7 }
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l }
• x \\
• y
• \end{array} \right] = \left[ \begin{array} { r }
• - \frac { 9 } { 14 } \\\\
• - \frac { 3 } { 7 }
• \end{array} \right]\)
• C) \(\left[ \begin{array} { l }
• x \\
• y
• \end{array} \right] = \left[ \begin{array} { l }
• \frac { 3 } { 14 } \\\\
• \frac { 15 } { 14 }
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l }
• x \\
• y
• \end{array} \right] = \left[ \begin{array} { c }
• \frac { 9 } { 28 } \\\\
• - \frac { 3 } { 7 }
• \end{array} \right]\)
• E) \(\left[ \begin{array} { l }
• x \\
• y
• \end{array} \right] = \left[ \begin{array} { c }
• \frac { 9 } { 14 } \\\\
• \frac { 15 } { 14 }
• \end{array} \right]\)

Describe the designs and applications of roller bearings.

Understand the classification and housing of antifriction bearings.

Familiarize with the basic concepts and types of ball bearings.

Understand the concepts of genetic inheritance and variation.

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