Simplify the given expression.-2/3

A.  
B. 81
C. 2187
D. 9


Answer: B

Mathematics

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Provide an appropriate response. A measurement is 12.3 sec. Find the greatest possible error of this measurement:

A. 1 sec B. .05 sec C. 0.005 sec D. 0.5 sec

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In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of the indicated trigonometric function of t.(, - )Find cos t.

A. - 
B.
C.
D. - 

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Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(-9x2y - xy) + (6xy + 5x2y)

A. -4x2y + 7xy B. 14x2y + 5xy C. -4x2y + 5xy D. 14x2y + 7xy

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Write the percent as a fraction or mixed number in lowest terms.%

A.  
B.  
C.  
D.

Mathematics