Use a graphing calculator to solve the system. Express solutions with approximations to the nearest thousandth.
x -y = 7100x + y = 9
A. {(0.154, -6.444)}
B. {(0.158, -6.777)}
C. {(0.157, -6.686)}
D. {(0.020, 6.971)}
Answer: B
Mathematics
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Graph.5x2 + 25y2 = 225 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume all variables represent nonzero real numbers.
4
A. 
B. 
C. 
D. 
Mathematics
Find an equation for the ellipse described. Graph the equation.Vertices at (5, -4) and (5, 8); length of minor axis is 6
A. 
+ 
= 1
B. 
- 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Provide an appropriate response.A proper fraction has the form 
. What is the largest possible number that x can be?
A. 21 B. 20 C. 22 D. 10.5
Mathematics