Find the magnitude 
and direction angle ?, to the nearest tenth of a degree, for the given vector v. v = -5i + 12j
A. 13; 67.4°
B. 13; 112.6°
C. 15; 112.6°
D. 13; 157.4°
Answer: B
Mathematics
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Evaluate to four decimal places using a calculator.e2.887
A. 17.9394 B. 7.3891 C. 8.3348 D. 7.8477
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Use reduction formulas to evaluate the integral.
A. - 
csc3 
cot 
+ 
cot 
+ C
B. - 
csc2 
cot 
- 
csc 
+ C
C. - 
csc2 
cot 
- 
cot 
+ C
D. - 
csc2 
cot 
- 
cot 
+ C
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Changes in lifestyles, population size, society's attitudes, educational status and marital status are all examples of demographic trends in the general environment.
Answer the following statement true (T) or false (F)
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Find the probability.A bag contains 19 balls numbered 1 through 19. What is the probability of selecting a ball that has an even number when one ball is drawn from the bag?
A. 
B. 
C. 9
D. 
Mathematics