Solve. Answer with a complete sentence.A spider covered a distance of 25.37 meters in 5.9 minutes. What was the spider's average rate of speed?
A. The spider's average rate of speed was 4.3 meters per minute.
B. The spider's average rate of speed was 43 meters per minute.
C. The spider's average rate of speed was 0.43 meters per minute.
D. The spider's average rate of speed was 5.3 meters per minute.
Answer: A
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Solve the problem.A carbon-14 dating test is performed on a fossil bone, and analysis finds that 15.5% of the original amount of carbon-14 is still present in the bone. Estimate the age of the fossil bone. (Recall that carbon-14 decays according to the equation A = A0e-0.000124t).
A. 1,500 years B. 150 years C. 15, 000 years D. 15,035 years
Simplify the expression.(
+ 
)(
- 
)
A. 6 B. 400 C. -6 D. 0
Find the area of the figure. Use 3.14 for ?.
A. 644.48 ft2 B. 744.96 ft2 C. 740.48 ft2 D. Not enough data
Simplify completely. If the fraction is improper, write it as a mixed number.
A. 
B. 
C. 3
D. 