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Consider this system of equations.

{[x-2y+3z=6],[-4x+5y-6z=8],[7x-8y+9z=1]:}
The system can be represented by the following matrix equation where 
A is a 
3×3 matrix and 
vec(b) is a 3D vector:

Consider this system of equations.\newline{x2y+3z=64x+5y6z=87x8y+9z=1 \left\{\begin{aligned} x-2 y+3 z & =6 \\ -4 x+5 y-6 z & =8 \\ 7 x-8 y+9 z & =1 \end{aligned}\right. \newlineThe system can be represented by the following matrix equation where A \mathbf{A} is a 3×3 3 \times 3 matrix and b \vec{b} is a 33D vector:

Full solution

Q. Consider this system of equations.\newline{x2y+3z=64x+5y6z=87x8y+9z=1 \left\{\begin{aligned} x-2 y+3 z & =6 \\ -4 x+5 y-6 z & =8 \\ 7 x-8 y+9 z & =1 \end{aligned}\right. \newlineThe system can be represented by the following matrix equation where A \mathbf{A} is a 3×3 3 \times 3 matrix and b \vec{b} is a 33D vector:
  1. Identify total tape needed: Step 11: Identify the total amount of tape needed and the amount per roll.\newlineTotal tape needed = 8,000cm8,000 \, \text{cm}, Tape per roll = 2,000cm2,000 \, \text{cm}.\newlineWe need to divide the total tape needed by the tape per roll to find out how many rolls are required.\newlineCalculation: 8,000cm÷2,000cm=48,000 \, \text{cm} \div 2,000 \, \text{cm} = 4 rolls.

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