Use a graphing calculator to solve the system.5x + 5y = 02x - 2y = 10
A. {(-2.5, 3.5)}
B. {(-1.5, 2.5)}
C. {(2.5, -3.5)}
D. {(2.5, -2.5)}
Answer: D
Mathematics
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A. 2.125 B. -2.125 C. -2.25 D. 2.25
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Find the GCF.90 and 126
A. 6 B. 2 C. 18 D. 9
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Determine the value of the trigonometric function of ? using the given information.If sin ? = 
and cos ? = 
, then determine the value of tan ?.
A. - 
B. 
C. - 
D. 
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Determine the vertex and the x-intercepts. Then sketch the graph.y = x2 - 4
A. 
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B. 
Vertex: (0, -4); x-intercepts: none
C. 
Vertex: (0, 4); x-intercepts: none
D. 
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Mathematics