Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.3w + 3x - 3y - 3z = -4-w - 5x - 5y - z = -23w + 4x + 4y + 3z = -53w + 5x + 5y + 3z = 6
A. (-z, z, -z, z)
B. 
C. 
D. No solution
Answer: D
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In a gambling game, on every play, there is a 0.1 probability that you win $7 and a 0.9 probability that you lose $1. What is the expected value of this game? Is the game fair?
A. +$2; Yes B. $0.20; Yes C. ?$2; No D. ?$0.20; No
Solve the problem.One side of a triangle is twice as long as a second side. The third side of the triangle is 17 feet long. The perimeter of the triangle cannot be more than 44 feet. Find the longest possible values for the other two sides of the triangle.
A. 31 feet and 31 feet B. 9 feet and 18 feet C. 14 feet and 14 feet D. 8 feet and 16 feet
Solve the problem.The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation y = 1.2
- 6,where y = 1 represents 2001, and so on. Use the model to predict the sales for 2006 to the nearest tenth of a million.
A. $102.0 million B. $104.0 million C. $103.0 million D. $101.0 million
Find the indicated term of the sequence.The ninth term of the arithmetic sequence 14
, 20
, 26
, ...
A. -40
B. 62
C. -34
D. 68