Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: A
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Rewrite as a single logarithm.2logb m - 
logb n + 
logb j - 4logb k
A. logb 
B. logb (2m - 
n + 
j - 4k)
C. logb 
D. logb 
Write the whole or mixed number as an improper fraction.4
A. 
B. 
C. 
D. 
The loudness L(x), measured in decibels, of a sound of intensity x, measured in watts per square meter, is defined as 
watt per square meter is the least intense sound that a human ear can detect. Determine the loudness, in decibels, of the sound.A particular Boeing 747 jetliner produces noise at a loudness level of 113 decibels. Find the intensity level (round to the nearest hundredth) in watt per square meter for this noise.
A. 0.40 watt per square meter B. 0.80 watt per square meter C. 0.20 watt per square meter D. 0.10 watt per square meter
Make the indicated conversion between American and metric units of weight and mass using the given property or properties. Round the answer to two decimal places if necessary.70 kilograms to pounds (1 kg ? 2.20 lb)
A. 177.8 lb B. 31.5 lb C. 154 lb D. 74.2 lb