Solve the system to the nearest 0.1 for each variable by using a graphing calculator.-3.5u + 4.4v = -4.2-4.4u = 2.3v + 3.6
A. u = -0.2; v = -1.1
B. u = -0.4; v = -0.8
C. u = -0.5; v = -0.9
D. u = 0.1; v = -1.3
Answer: A
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Solve the system by graphing.
A. ? B. (5, 2) C. (2, 5) D. (3, 14)
Perform the indicated operations.(2x + y - z)2
A. 4x2 + y2 + z2 - 2xyz B. 4x2 + y2 + z2 + 2xy - 2xz - 2yz C. 4x2 + y2 + z2 D. 4x2 + y2 + z2 + 4xy - 4xz - 2yz
Solve the problem.Find the 12th square number that corresponds to the following dot sequence.
A. 144 B. 78 C. 169 D. 24
Middletown is designing a new high-speed rail system to connect Downtown, the Airport, and the Mall. The elevated tracks for the rail system will run along the existing roads, that run on a grid as shown below. In addition, a central switching station must be located at one of the intersections.
What is the length of the optimal network?
A. 7 blocks
B. 8 blocks
C. 5 + 
blocks
D. 9 blocks
E. none of these