Solve the system of equations.7x + 7y + z = 1 x + 8y + 8z = 89x + y + 9z = 9
A. (-1, 1, 1)
B. (1, -1, 1)
C. (0, 1, 0)
D. (0, 0, 1)
Answer: D
Mathematics
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Graph the polar equation.r = 8 sin 2?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A long-distance runner runs 6 miles south and then 9 miles east. How far is the runner from the starting point? Round your answer to the nearest thousandth if necessary. 
East --9 mi-->
A. 11.817 mi B. 5.477 mi C. 15 mi D. 10.817 mi
Mathematics
Approximate the value using a calculator. Express answer rounded to three decimal places.34.7
A. 174.771 B. 14.100 C. 27.000 D. 103.823
Mathematics
+ 
=
A. 
B. 
C. 
D. 
Mathematics