Solve.Find the distance between (7, 2) and (-5, -5).
A. 
B. 193
C. 84
D. 
Answer: D
Mathematics
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(7x - 5)
A. y = cot u; u = 7x - 5; 
= - 7 csc2(7x - 5)
B. y = cot u; u = 7x - 5; 
= - 7 cot(7x - 5) csc(7x - 5)
C. y = 7u - 5; u = cot x; 
= - 7 cot x csc2 x
D. y = cot u; u = 7x - 5; 
= - csc2(7x - 5)
Mathematics
Simplify.
A. 
B. 3r + 4s
C. 
D. 4r + 3s
Mathematics
Perform the indicated operation. Where possible, reduce the answer to its lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Identify the open intervals where the function 
is increasing or decreasing.
?
A. decreasing: 
; increasing: 
B. increasing:
; decreasing:
C. increasing on 
D. decreasing on
E. none of the above
Mathematics