Solve the system using Gauss-Jordan elimination.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Evaluate the expression.
?
?
A. 
B. 
C. 
D. 
E. -10
Mathematics
Provide an appropriate response.
Taylor used a regular hexagonal stock with a 2-in. distance across the flats to mill a new hexagonal rod as illustrated in the cross-section. Assume the vertices of the inside hexagon are the midpoints of the original hexagon's sides. What is the area milled off the original hexagon to create the new one?
A. 0.866 in2 B. 2.598 in2 C. 5.196 in2 D. 0.137 in2
Mathematics
Evaluate the expression without using a calculator.
a. 
b. 
c. 
d. 64
e. -64
Mathematics
Solve. Use the principle of square roots.(x + 9)2 = 28
A. 2
, -2
B. 2
- 9, 2
+ 9
C. -9 + 2
, -9 - 2
D. -9 + 2
, -9 - 2
Mathematics