Find the absolute value.
A. 
B. 19
C. 0
D. -19
Answer: B
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Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - 8y + z = 23x - y + 2z = 6
A. 
B. 
C. ?
D. 
Find the product.6x7(-8x7 + 9x3 + 6)
A. -48x14 + 54x10 + 36x7 B. -48x7 + 54x3 + 36 C. -48x14 + 54x10 D. -48x14 + 9x3 + 6
Use a proportion to solve the problem.The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 156 yards with a 7-iron, how far should he average with a 5-iron?
A. 187.2 yards B. 145 yards C. 167 yards D. 130 yards
Consider the plot plan shown in the figure below. How many cubic yards of sawdust are needed for preparation of the lawn area if it is to be spread to a depth of 5 inches?
?
Give your answer to the nearest cubic yard.
?
?
A. 11 yd 3 B. 8 yd 3 C. 2 yd 3 D. 9 yd 3 E. 6 yd 3