Find an equation of variation in which the following are true.y varies directly as x and inversely as z, and y = 12 when x = 2 and z = 8.
A. y = 
B. y = 51xz
C. y = 
D. y = 
Answer: C
Mathematics
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Use identities to simplify the expression. Do not use a calculator.
A. cos 15° B. cot 15° C. tan 15° D. sin 15°
Mathematics
Simplify the complex fraction by simplifying the numerator and denominator separately. 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Is it true that 1 × 10-13 is written in scientific notation?
A. Yes B. No
Mathematics
Determine whether the partial fraction decomposition is correct by graphing the left side and the right side of the equation on the same coordinate system and observing whether the graphs coincide. (yes = coincide, no = does not coincide)
= 
+ 
A. No B. Yes
Mathematics