Determine the degree of the polynomial.-a + 7a3 - 6a7 + 4a2

A. 13
B. 4
C. 12
D. 7

Answer: D

Mathematics

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Find the limit. 

A. 0
B. - 
C. -?
D. - 

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Solve the problem.Find an equation for the level curve of the function f(x, y) = 25 - x2 - y2 that passes through the point .

A. x2 + y2 = - 7 B. x2 - y2 = 7 C. x2 + y2 = 7 D. x2 + y2 = 32

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Decide whether the statement is true or false.The sum of two irrational numbers is always irrational.

A. True B. False

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Solve the equation.5(x - 1.2) = 9.3

A. 15.3 B. 2.1 C. 1.62 D. 3.06

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Mathematics