Perform the multiplication. The variable represents a positive number.
A. 
B. 
C. 
D. 
E. 
Answer: C
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Use graphical methods to find values of x and y satisfying the given conditions. Find the value of the maximum or minimum.Find x ? 0 and y ? 0 such thatx + 2y ? 10 3x + y ? 10 and z = 2x + 4y is minimized.
A. Minimum of 0 when x = 0 and y = 0 B. Minimum of 20 when x = 2 and y = 4, as well as when x = 10 and y = 0, and all points in between C. Minimum of 20 when x = 2 and y = 4 D. Minimum of 20 when x = 10 and y = 0
Solve the problem.The attendance at the Sunday football game was four times the attendance at Monday night's game. In all, 98,000 fans attended the games. How many fans attended Sunday's game?
A. 78,400 fans B. 39,200 fans C. 58,800 fans D. 19,600 fans
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 1, y = 3, z = 1; (1, 3, 1) B. x = 8, y = -1, z = -3; (8, -1, -3) C. x = 9, y = -1, z = 3; (9, -1, 3) D. x = 8, y = 1, z = 3; (8, 1, 3)
Solve the problem.Two ships leave a harbor together traveling on courses that have an angle of 128° between them. If they each travel 543 miles, how far apart are they (to the nearest mile)?
A. 476 mi B. 42 mi C. 976 mi D. 1952 mi