Determine ? in decimal degrees, 0° ? ? ? 90°. Round results to an appropriate number of significant digits.cot ? = 3.511
A. 15.1°
B. 15.900°
C. 15.08°
D. 15.90°
Answer: D
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Write an equivalent expression. Use an associative law.(3 + u) + v
A. (3 + v) + u B. v + (3 + u) C. (u + 3) + v D. 3 + (u + v)
Use the following property of the definite integral to estimate the definite integral 
:
A wooden beam has a rectangular cross section of height h and width w (see figure). The strength S of the beam is directly proportional to the width and the square of the height. What are the dimensions of the strongest beam that can be cut from a round log of diameter d = 26 inches? Round your answers to two decimal places. [Hint: 
where k> 0 is the proportionality constant.]
?
A. 
inches and 
inches
B. 
inches and 
inches
C. 
inches and
inches
D. 
inches and
inches
E. 
inches and
inches
Solve the quadratic equation using the most efficient technique (factoring, extracting square roots, completing the square, or the quadratic formula).6x2 - 3x - 9 = 0
A. 
B. 
C. 
D. 