Find the requested value of the variable.y varies directly as z. If y = 154 when z = 11, find y when z = 13.
A. y = 196
B. y = 182
C. y = 169
D. y = 121
Answer: B
Mathematics
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
An after-shave lotion is 40% alcohol. If you have 15 fluid ounces of the lotion, how much water must be added to reduce the mixture to 30% alcohol? ? __________ ounces of water
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the equation on the interval [0, 2?).tan 2x - tan x = 0
A. 0
B. 0, ?, 2?
C. 
, 
, 
, 
, 
, 
, 
D. 
,
Mathematics
Solve.Locate the centroid of a semicircular region.
A. 
= 
= 
= 
a
B. 
= 
= 
= 
a
C. 
= 
= 
= 
a
D. 
= 
= 
= 
a
Mathematics