Simplify the expression. Assume that all variables are positive when they appear. - 4 + 2

A. -2
B. -2
C. -7
D. -7


Answer: D

Mathematics

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Evaluate the integral by making a substitution and then using a table of integrals.

A. ln  + cos t + C
B. ln  - sin t + C
C. ln  + sin t + C
D. ln  - sin t + C

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Graph the parabola whose equation is given.f(x) = x2 - 1

A.

B.

C.

D.

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Solve the problem.How many ways can a committee of 5 be selected from a club with 10 members?

A. 100,000 B. 252 C. 50 D. 30,240

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