Determine what percent of the figure is shaded.
A. 70%
B. 85%
C. 12.5%
D. 87.5%
Answer: D
Mathematics
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Find the particular solution to the given differential equation that satisfies the given conditions.4D2y + 9y = 0; y = 0 and Dy = 1 when x = 
?
A. y = - 
cos 
x
B. y = c1 sin 
x + c2 cos 
x
C. y = - 
sin 
x
D. y = 
cos 
x
Mathematics
Solve.The area of a triangular poster is 870 square centimeters. Its altitude is 2 feet shorter than twice its base. Find the lengths of the altitude and base.
A. base = 60 cm; altitude = 14.5 cm B. base = 15 cm; altitude = 58 cm C. base = 30 cm; altitude = 58 cm D. base = 30 cm; altitude = 29 cm
Mathematics
Find the indicated sum.3 + 6 + 9 + . . . + 120
A. 4920 B. 2460 C. 4797 D. 2398
Mathematics
Solve.7n - 2 = 47
A. 8 B. 46 C. 42 D. 7
Mathematics