Find.cos 

A.
B.
C.
D.

Answer: D

Mathematics

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Find the intervals on which the function is continuous.y = 

A. (-?,?) B. (-?, -24), (-24, ?) C. (-?, -3), (-3, ?) D. (-?, 15), (15, ?)

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Solve this problem.One side of a right triangle is 9, and the hypotenuse is 9. Find the length of the other side.

A. 9
B. 18
C. 18
D. 9

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Use a system of linear equations to solve the problem.Two numbers total -6, and their difference is 6. Find the two numbers.

A. 0 and - 6 B. -6 and 2 C. - 2 and - 4 D. - 3 and - 9

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Represent the shaded area in the figure group with a mixed number.

A. 3
B. 1
C. 1
D. 4

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Mathematics