Solve the problem. Round your answer to the nearest tenth.The roof of a building is in the shape of the top half of the hyperbola y2 - x2 = 56, where x and y are in meters. Refer to the figure and determine the distance, w, between the two outside walls. 
a = 8.0 m b = 8.0 m
A. 11.0 m
B. 8.0 m
C. 2.9 m
D. 5.7 m
Answer: D
Mathematics
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Evaluate the integral by using multiple substitutions.
dy
A. 6 sin2 
+ C
B. 
cos4 
+ C
C. 
sin4 
+ C
D. 2 sin4 
+ C
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Add or subtract as indicated. Write the answer in simplest form.- 
+ 
A. 1
B. - 1
C. 
D. - 
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Perform the operation. Write the answer as a mixed number.4
- 
A. 12
B. 13
C. -5
D. -13
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