Simplify. Write your answer using only positive exponents. Assume that all variables represent nonzero numbers.4-3 ? 46
A. 163
B. 4-18
C. 43
D. 1618
Answer: C
Mathematics
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Evaluate the expression.3-2
A. -9
B. 9
C. 
D. 
Mathematics
The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm which edge should we choose fourth?
A. BF B. AC C. BE D. DF E. none of these
Mathematics
Graph.y = ?7 - x?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The height, h, in feet, of the path of a ball thrown from an initial height of 64 feet can be approximated by the quadratic formula 
where t is the number of seconds after the ball was thrown. (a) How long does it take for the ball to reach its maximum height? (b) How high will the ball reach?
A. (a) 2
sec
(b) 128 ft
B. (a) 2 sec
(b) 224 ft
C. (a) 
sec
(b) 128 ft
D. (a) 3 sec
(b) 256 ft
Mathematics