Answer Happy

4. Consider an economy with four sectors: Mining, Lumber, Energy and Transportation. Mining sells 20% of its output to Lumber, 40% to Energy, and retains the rest. Lumber sells 25% of its output to Mining, 40% to Energy, 20% to Transportation, and retains the rest. Energy sells 10% of its output to Mining, 20% to Lumber, 25% to Transportation, and retains the rest. Transportation sells 20% of its output to Mining, 10% to Lumber, 50% to Energy, and retains the rest. D. Gyamfi Page 2 of 4 Page 2 of 4 a. Construct an exchange table for this economy. b. Develop a system of linear equations that leads to price at which each sector's income matches its expenses. c. Write down the augmented matrix for the above linear system 5. Write down a system of linear equations for the general flow pattern for the network below and identify its basic and free variables: A B 60->> 70 80 +100 C 80 90 6. Determine which matrices are in reduced echelon form and which others are only in echelon form. 1000 10 10 1 000 0110 a). b). 0110 d). 0200 0000 0001 0011 0001 e). 1000 0100 00 11 11011 02022 00033 00004 122 F * x6 x5 E 9 C 101 1 f)- 0111 0000 X₂ X3 5 9). 0000 1200 0010 0001