Find 
if 
and the tangent line at 
/> has slope x.
?
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Identify the row operation that produces the resulting matrix.
? 
A. (-1)R2 ? R2 B. R1 + (-1)R2 ? R2 C. (-1)R1 + R2 ? R2 D. R1 + (-1)R2 ? R1
Mathematics
Without graphing the function, determine its amplitude or period as requested.y = 
cos (- 
x)Find the period.
A. 
B. 
C. 
D. 
Mathematics
Express the sum using summation notation.33 + 43 + 53 + ... + 93
A. 
B. 
C. 
D. 
Mathematics
Add and, if possible, simplify.
t + 
t
A. 
t
B. 
C. 
t
D. 
t
Mathematics