8:35 7 Search a webassign.net 30. [-/1 Points] DETAILS ROLFFM8 2.2.020. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Write the system of equations represented by the augmented matrix. (Utilize the variables x, y, and z in that order. Enter your answers as a comma-separated list of equations.) 5 3 1 3/0 25 1 7 Additional Materials eBook 31. [-/1 Points] DETAILS ROLFFM8 2.2.034. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve the following system of equations by reducing the augmented matrix. 6x + 9y = -21 12x - 5y = 73 ( x, y) = ( Additional Materials eBook 32. [-/1 Points] DETAILS ROLFFM8 2.2.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve the following system of equations by reducing the augmented matrix. X1+ X2 + 2x3= 3 2x1 + 4X2 -6 5X1 X3 = 3 (X1, X2, X3) = Additional Materials eBook 33. [-/1 Points] DETAILS ROLFFM8 2.2.050. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve the following system of equations by reducing the augmented matrix. X1 + X2 + 2X3+ X4 = 3 X1 + 2x2 + X3+ X4 = 2 X1 + X2 + X3 + 2X4 = 1 2 x 1 + X2 + X3 + X4 = 4 (X1, X2, X3, X4) = Additional Materials eBook8:35 Search webassign.net 26. [-/1 Points] DETAILS ROLFFM8 2.1.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Determine the equilibrium solution. The demand equation is given first and the supply equation second. P = -6x + 36 p= 4 ( x, P) = ( Need Help? Watch It Additional Materials eBook 27. [-/2 Points] DETAILS ROLFFM8 2.1.042. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The Gifts Galore Catalog Company estimates the demand equation for its portable video recorder/player to be p = -11x + 742, where x is the demand quantity (in thousands) and p is the price. The supply equation is estimated to be p = 13.5x + 399, where x is the supply quantity (in thousands) and p is the price. Find the equilibrium quantity and price. Equilibrium occurs when the price of the video recorder/player is $ and the quantity is thousand. Additional Materials eBook 28. [-/2 Points] DETAILS ROLFFM8 2.1.044. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Jim has $520 in his savings account and adds $15 per week. At the same time, Rhonda has $120 in her savings account and adds $23 per week. (a) How long will it take for Rhonda to have the same amount as Jim? weeks (b) How much will each have? $ Additional Materials eBook 29. [-/9 Points] DETAILS ROLFFM8 2.2.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER For the matrix 5 -3 6 4 11 16 12 -16 INVO 15 -3 19 - 3 -4 -9 10 -7 12 (a) Give the (1, 1), (2, 2), (3, 4), (4, 3), (2, 5) elements. (1, 1) = ( 2 , 2 ) = (3, 4) = ( 4, 3 ) = (2, 5) = (b) Determine the locations that contain -3. --Select--- (c) Find a35, a24, and a13. 235 = 2 24 = 213 Additional Materials eBook