Solve the system using Gaussian elimination. 8x + 3y - z = 60 x - 9y - 6z = -111-8x + y + z = -32
A. {(6, 9, 7)}
B. {(-6, 7, 12)}
C. ?
D. {(6, 7, 9)}
Answer: D
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Multiply in the indicated base.1102 × 112
A. 10,0112 B. 10012 C. 10,0102 D. 10112
Solve. Remember to insert units when writing your answer.Harry caught a fish weighing 35 lb 15 oz and then caught a second fish weighing 
How much more did the first fish weigh?
A. 44 lb 9 oz B. 43 lb 9 oz C. 26 lb 5 oz D. 27 lb 5 oz
Subtract.-110 - (-440)
A. -330 B. -550 C. 330 D. 550
A weight is hung from a spring and set in motion so that it moves up and down continuously. The velocity v of the weight at any time t is given by the equation ? v = 3.5sin 4?t ? where v is measured in meters per second and t is measured in seconds. Find the maximum velocity of the weight and the amount of time it takes for the weight to move from its lowest position to its highest position. ?
A. The maximum velocity is 3.5 meters per second ; the time it takes for the weight to move from its lowest position to its highest position is 
seconds.
B. The maximum velocity is 3.5 meters per second ; the time it takes for the weight to move from its lowest position to its highest position is 
seconds.
C. The maximum velocity is 7 meters per second ; the time it takes for the weight to move from its lowest position to its highest position is 
seconds..
D. The maximum velocity is 7 meters per second ; the time it takes for the weight to move from its lowest position to its highest position is 
seconds.
E. The maximum velocity is 2.5 meters per second ; the time it takes for the weight to move from its lowest position to its highest position is 
seconds.