Divide and simplify. Assume that all variables represent positive numbers.

A. 2x2y
B. 28xy
C. 2x4y2
D. 4x2y

Answer: A

Mathematics

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Subtract and simplify.

A. 4
B. 6
C. 5
D. 5

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Evaluate the function.Given that f(x) = x4 - 4.2x2 - 7.1x, find f(-1.1).

A. -1.2 B. -1.2639 C. 4.1921 D. -11.4279

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Mathematics

Find the magnitude of the vector.u = 

A. -5
B. - 
C. 25
D. 5

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Solve.In how many distinguishable ways can the letters of the word STARTER be arranged?

A. 5040 B. 2520 C. 630 D. 1260

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Mathematics