Solve the triangle.
A. a = 9.9, c = 13.52, ? = 40°
B. a = 9.9, c = 13.52, ? = 45°
C. a = 13.52, c = 9.9, ? = 45°
D. a = 13.52, c = 9.9, ? = 50°
Answer: C
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Solve the problem.A 23-inch piece of string is cut into two pieces. One piece is used to form a circle and the other to form a square. How should the string be cut so that the sum of the areas is a minimum? Round to the nearest tenth, if necessary.
A. Circle piece = 12.9 in., square piece = 10.1 in. B. Square piece = 0 in., circle piece = 23 in. C. Square piece = 12.9 in., circle piece = 10.1 in. D. Square piece = 5.8 in., circle piece = 5.3 in.
Perform the indicated operation(s). Simplify if possible.
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A. 
B. 
C. 
D. 
Solve the problem.A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.
A. 23,309 B. 13,829 C. 35,538 D. 1,600
Find the area.
A. 665 cm2 B. 1330 cm2 C. 612.5 cm2 D. 332.5 cm2