Combine. Assume that all variables represent non-negative real numbers.6
+ 7
A. 42
B. 13
C. 13
D. 6
+ 7
Answer: D
Mathematics
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Reverse the order of integration and then evaluate the integral.
A. ln 7 - 1
B. 
C. 
D. ln 7
Mathematics
Solve the problem.The vertical displacement y (in cm) of the end of an industrial robot arm for each cycle is 
where t is the time (in s). Find the vertical velocity for 
A. 3.0 cm/s B. 17 cm/s C. 2.4 cm/s D. 16 cm/s
Mathematics
Evaluate the expression using exponential rules. Write the result in standard notation.
A. -500,000 B. -0.0000005 C. 500,000 D. 0.0000005
Mathematics
Solve the problem.Suppose y varies directly as x and inversely as the square root of w. If y = 21 when 
and 
find y when 
and 
Give the exact answer.
A. 28
B. 
C. 14
D. 
Mathematics