Write the augmented matrix for the system. 8x - 2z = 38 -2y + 5z = 7 6x + 7y + 8z = 31
A. 
B. 
C. 
D. 
Answer: B
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Solve. Write the answer as a mixed number in simplest form.A stack of 1
-inch wide pizza boxes has a height of 18
-inches. How many boxes are in the stack?
A. 23 boxes B. 7 boxes C. 18 boxes D. 15 boxes
Solve the problem.To find the distance AB across a river, a distance BC = 1,101 m is laid off on one side of the river. It is found that B = 112.8° and C = 12.0°. Find AB rounded to the nearest meter.
A. 279 m B. 230 m C. 233 m D. 282 m
Convert the units.1872 in2 = 
ft2
A. 208 B. 12 C. 13 D. 14
Solve the problem.The following list of digits was taken from a table of random numbers. We will let each set of 5 represent a family of five children. If a digit is 0 - 4 it will be a girl and the digit 5 - 9 will be a boy. Use this simulation to estimate the probability that a family of five children will have less than 2 boys.1872894741320630496354859155927135728152117321717389555755200888295295728953889458070773711019494917643369510390740035776259952052240040384511507452332751033761865636172939087480615941279969113392706727324727232240686253264092997095877709759912916866
A. 
B. None of these
C. 
D. 