The graph of the derivative 
(x) of a continuous function f is shown. On what intervals is f decreasing?
a. (1, 3) ? (4, 6)
b. (?1, 1)
c. (8, 9)
d. (2, 6)
e. None of these
a. (1, 3) ? (4, 6)
Mathematics
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Set up the general equation from the given statement.r varies jointly as s and t.
A. r = kst
B. r = 
C. r = kd + kt
D. r = kd + t
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Find the requested angle.The complement of an angle measuring x is 5x. Solve for x.
A. 12? B. 10? C. 18? D. 15?
Mathematics
Solve the formula for the specified variable.A = 
h(B + b)
for B
A. B = 
B. B = 2A - bh
C. B = 
D. B = 
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Use a sum or difference identity to find the exact value.tan 
A. -2 + 
B. 2 - 
C. 2 + 
D. -2 - 
Mathematics