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
Mathematics
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. - 
Mathematics
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
Mathematics
Write the percent as a fraction or mixed number in lowest terms.
%
A. 
B. 
C. 
D. 
Mathematics