Solve the problem. Round your answer to the nearest tenth unless otherwise indicated.Brett and Helina went on a 52-mile canoe trip with their class. On the first day they traveled 13 miles. What percent of the total distance was that?
A. 4%
B. 400%
C. 0.25%
D. 25%
Answer: D
Mathematics
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Find the value of the indicated trigonometric function of the angle ? in the figure. Give an exact answer with a rational denominator.
Find sin ?.
A. sin ? = 
B. sin ? = 
C. sin ? = 
D. sin ? = 
Mathematics
Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.(6, 8); Find cos ?.
A. 
B. 
C. 
D. 
Mathematics
Sketch the graph of y = cos x between x = -4? and x = 4? by extending the graph for x between 0 and 2?.
?
?
A. ?
B. ?
C. ?
Mathematics
Simplify. Do not use negative exponents in your answer.
A. z11
B. z5
C. 
D. 
Mathematics