Express the sum in sigma notation.
+ 
+ 
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Suppose that y is inversely proportional to x and that y = 20.5 when x = 5. Find the constant of proportionality k. Then, find y when x = 25.
A. k = 4.1; y = 102.5 B. k = 102.5; y = 4.1 C. k = 115; y = 4.6 D. k = 100.5; y = 4.1
Mathematics
Given p is true, q is true, and r is false, find the truth value of the statement.(~p ? q) ? ~r
A. False B. True
Mathematics
Graph the linear equation.y + 5 = x
A. 
B. 
C. 
D. 
Mathematics
Identify the type of graph.(x + 4)2 + (y - 2)2 + 12 = 0
A. The graph is a circle with center (-4, 2). B. The graph is the point (-4, 2). C. The graph is an ellipse with center (4, -2). D. The equation has no graph.
Mathematics