How to Add and Subtract Matrices? (+FREE Worksheet!)
Adding and Subtracting Matrices – Example 1: \(\begin{bmatrix} 2 & -5 & -3 \end{bmatrix}+ \begin{bmatrix}1 & -2 & -3 \end{bmatrix}\) Solution: Add the elements in the matching positions: \(\begin{bmatrix} 2+1 & -5+(-2) & -3+(-3) \end{bmatrix}= \begin{bmatrix}3 & -7 & -6 \end{bmatrix}\) The Absolute Best Books to Ace Pre-Algebra to Algebra II Adding and Subtracting Matrices […]
How to Find Arc Length and Sector Area? (+FREE Worksheet!)
The Absolute Best Books to Ace Pre-Algebra to Algebra II Arc Length and Sector Area – Example 1: Find the length of the arc. Round your answers to the nearest tenth. \((π=3.14), r=24\) \(cm\), \(\theta=60^\circ\) Solution: Use this formula: length of a sector \(=\color{blue}{(\frac{θ}{180})πr}\) length of a sector \(=(\frac{θ}{180})πr\) \(=(\frac{60}{180})π(24)=(\frac{1}{3})π(24)=8×3.14 \cong 25.1 \) \(cm\) Arc […]
