If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions. -  =  +  = 

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A.
B.
C.
D.

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Answer: C

Mathematics

Evaluate the line integral along the curve C.ds, C is the curve r(t) = (-4 - t)i + 2tj - 2tk , 0 ? t ? 1

A. 18 B. - 6 C. - 2 D. 6

Solve the quadratic equation by factoring.x2 - x = 42

A. {-6, -7} B. {-6, 7} C. {6, 7} D. {1, 42}

Simplify.324/5

A. 16 B. 128 C. 512 D. 256

Write the decimal number in binary form.55 

A. 110010 B. 110101 C. 110111 D. 111000 E. 110110