Use a graphing calculator and the method of matrix inverses to solve the system. Give 5 decimal places.3.2x + ?y = 
x - 7.84y = 4
A. {(0, 1)}
B. {(0.25269, 0.45438)}
C. {(1.25432, -0.73113)}
D. {(0.98584, -0.29241)}
Answer: D
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Write out the first five terms of the sequence.an = 4n - 1
A. 3, 4, 5, 6, 7 B. 5, 9, 13, 17, 21 C. 3, 7, 11, 15, 19 D. -3, -7, -11, -15, -19
Factor the polynomial completely.49k2 - 25m2
A. (7k + 5m)(7k - 5m) B. (49k + m)(k - 25m) C. (7k - 5m)2 D. (7k + 5m)2
Solve.The gasoline/oil ratio for a certain snow mobile is 50 to 1. If 1 gallon equals 128 fluid ounces, how many fluid ounces of oil should be mixed with 30 gallons of gasoline? Round the answer to the nearest whole ounce.
A. 77 fl oz B. 78 fl oz C. 76 fl oz D. 7600 fl oz
A simplex matrix for a standard maximization problem is given. Indicate whether or not the solution shown is complete (optimal). If the solution is not complete, find the next pivot or indicate that no solution exists.
?
?
A. next pivot: 4 in R3C1 B. next pivot: -3 in R4C1 C. next pivot: 2 in R1C1 D. optimal solution E. no solution