Select the right expression for the following sum and prove that your statement is true for all natural numbers n.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Two forces act at a point in the plane. The angle between the two forces is given. Find the magnitude of the resultant force.forces of 59 and 81 newtons, forming an angle of 90°(round to the nearest newton)
A. 22 newtons B. 4779 newtons C. 140 newtons D. 100 newtons
Mathematics
Divide, if possible. If a quotient is undefined, state so.-18 ÷ 1
A. Undefined B. 1 C. 18 D. -18
Mathematics
Solve the absolute value inequality. Write the solution set using interval notation.
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A. (-11, 3) B. (-3, 11) C. (-?, -3) ? (11, ?) D. (-?, -11) ? (3, ?)
Mathematics
Graph the system of inequalities.x2 + y2 ? 497x + 6y ? 42
A. 
B. 
C. 
D. 
Mathematics