Combine like terms.2mn - 2mn
A. 4mn
B. 0
C. -mn
D. mn
Answer: B
Mathematics
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Solve.Find the area between y = ln x and the x-axis from x = 1 to x = 5.
A. ln 5
B. 
C. 5 ln 5 - 4
D. 5 ln 5 - 5
Mathematics
Solve the problem.Find the sum of the infinite series 1 + 9r + 4r2 + 9r3 + r4 + 9r5 + 4r6 + 9a7 + r8 ... for those values of r for which it converges.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics
Find the limit as x approaches c of the average rate of change of the function from c to x.c = 3;f(x) = 3x2 + 39x
A. 90 B. 30 C. 57 D. 108
Mathematics