Solve the problem.June has a strip of paper 30.8 inches long. She wants to cut it into strips that are 7.7 inches long. How many 7.7-inch strips will she get from the paper?
A. 5 pieces
B. 4 pieces
C. 40 pieces
D. 3 pieces
Answer: B
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Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 50 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 5 × 10-10 watt/m2 B. 1 × 10-6 watt/m2 C. 1.48 × 1014 watt/m2 D. 1 × 10-7 watt/m2
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 0, x = 9
A. 486? B. 18? C. 972? D. 324?
Decide whether the statement makes sense. Explain your reasoning.Javier takes a shower to save time. When he gets into the shower at 6:50, he is out by 7:10. When he used to take baths, it would take him a quarter of an hour.
What will be an ideal response?
Choose the best answer.The mass of your math text book is about how much?
A. 1.3 metric tonnes B. 1.3 grams C. 1.3 milligrams D. 1.3 kilograms