Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 84.8°
B. 174.8°
C. 95.2°
D. 5.2°
Answer: D
Mathematics
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Solve.An original amount of a radioactive substance decomposes such that N mg remain after t years. The function relating t and N is 
Sketch the graph.
A. 
B. 
C. 
D. 
Mathematics
Integrate the given expression.
A. 
t3/2 + 
t5/2 + C
B. 
t3/2 + 
t2 + C
C. 2t3/2 + t5/2 + C
D. 3t3/2 + 
t5/2 + C
Mathematics
Match the equation to the graph.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics
Determine whether the statement is true or false.If a function f has an inverse, then the graph of f-1 can be obtained by reflecting the graph of f across the x-axis.
A. True B. False
Mathematics