Use a graphing calculator to solve the system of equations. Round your solution to one decimal place.2.2x - 1.7y + 1.6z = 1.65.7x - 7.0y + 0.7z = -3.32.9x - 4.4y - 5.7z = 4.6
A. (3.0, 2.6, -0.9)
B. (1.5, 1.3, -0.4)
C. (4.5, 3.9, -1.3)
D. (6.0, 5.2, -1.8)
Answer: D
Mathematics
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Use set statements to write a description of the shaded area. Use union, intersection and complement as necessary.
A. (A ? B)' B. A' ? B C. B - A D. A' ? B
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Evaluate the expression.(-2)0
A. 0 B. 1 C. -2 D. -1
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The circle or ellipse shown in the calculator-generated graph was created using function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?x2 + 
= 1
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.2
- 3
A. 12
B. 6
- 3
C. 0
D. cannot simplify
Mathematics