Find the weighted mean of the numbers in the table. Round to the nearest tenth.Five rats were inoculated against a disease. After an incubation period, the number of rats contracting the disease was noted. The experiment was repeated 20 times, with the results shown in the table. 
A. 2.7 rats
B. 2.3 rats
C. 3.1 rats
D. 2.4 rats
Answer: B
Mathematics
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve.The volume of a cube is given by 343 cm3. What is the area of each side of the cube?
A. 49 cm2 B. 7 cm2 C. 14 cm2 D. 45 cm2
Mathematics
Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
B = 30.4°, c = 3.4 mm
A. a = 2.9 mm, A = 59.6°, b = 2.1 mm B. a = 2.1 mm, A = 59.6°, b = 2.7 mm C. a = 2.9 mm, A = 59.6°, b = 1.7 mm D. a = 1.7 mm, A = 59.6°, b = 2.9 mm
Mathematics
Convert the angle in degrees to radians. Express the answer as multiple of ?.-54°
A. - 
B. - 
C. - 
D. - 
Mathematics