A point is moving with uniform circular motion on a circular path of radius r. Find ? if 
cm and 
cm/sec. Round to the nearest tenth if necessary.
?
A. 2.5 rad/sec
B. 1.49 rad/sec
C. 1.5 rad/sec
D. 0.5 rad/sec
E. 3.27 rad/sec
Answer: D
Mathematics
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Write sigma notation.
+ 
+ 
+ 
+ 
A. 
B. 
C. 
D. 
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Calculate the derivative of the function. Then find the value of the derivative as specified.
? =1 if r = 
A. 
= 
; 
? =1
= 
B. 
= - 
; 
? =1
= - 
C. 
= - 
; 
? =1
= - 
D. 
= 
; 
? =1
= 
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Evaluate the expression.
A. 
B. 20
C. 2!
D. 
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Solve. Write the fraction in simplest form.There are 21,000 runners at a marathon. If 2,000 are males, what fraction of the runners are males?
A. 
B. 
C. 
D. 
Mathematics