Perform the indicated operation and write the answer in simplest form.  53 

A. 15 
B. 15 
C. 13 
D. 318 


Answer: A

Mathematics

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Solve the problem by integration.Under specified conditions, the time t (in min) required to form x grams of a substance during a chemical reaction is given by   Find the equation relating t and x if x = 0 g when t = 0 min.

A. t =  ln  -  ln 
B. t =  ln  +  ln 
C. t =  ln  -  ln 
D. t =  ln  +  ln 

Mathematics

Divide.3.6 ÷ 0.04

A. 0.9 B. 90 C. 0.09 D. 9

Mathematics

Solve the systems of equations by the addition method. 

A. {(0, -1)} B. {(0, 0)} C. no solution; ? D. {(3, -4)}

Mathematics

Identify the equation without completing the square.2x2 + 3y2 - 2x - 4 = 0

A. parabola B. ellipse C. hyperbola D. not a conic

Mathematics