A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use the trapezoidal rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 3
A. 3.386 ft
B. 2.202 ft
C. 2.787 ft
D. 2.777 ft
Answer: D
Mathematics
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Solve.A window is in the shape of a square topped by a semicircle. The side of the square is x cm and the window cannot be wider than 140 cm. Find the function for the perimeter of the window and the domain of the function.
A. P = 3x + 
?x : 0 < x ? 140
B. P = 4x + ?x : 0 < x ? 140
C. P = 4x + 
?x2 : 0 < x ? 140
D. P = 3x + 
?x2 : 0 < 140 ? x
Mathematics
Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = 4x3i + 4y3j + 4z3k ; D: the thick sphere 1 ? x2 + y2 + z2 ? 36
A. 373,200?
B. 2580?
C. 
?
D. 74640?
Mathematics
Use the figures to answer the question.
What fraction of figure 9 is shaded?
A. 
B. 
C. 
D. 
Mathematics
Solve.
= 
A. 
B. 
C. 
D. 
Mathematics