When adding or subtracting fractions, if the denominators are ____, simply add or subtract the ____.

A. equivalent, numerators
B. equivalent, denominators
C. different, numerators
D. different, denominators


Answer: A

Health & Biomechanics

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Daily computer e-mailing, surfing the ‘Net, and conducting online transactions decrease energy expenditure by _____ calories

a. 3 to 10
b. 5 to 10
c. 50 to 300
d. 50 to 200

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One of the risk factors for skin cancer is

a. having a dark complexion. b. excessive ultraviolet light exposure. c. excessive alcohol consumption. d. long-time cigarette smoking.

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The liver is part of the digestive system.

Answer the following statement true (T) or false (F)

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Idiotypic determinants are located within:

a. hypervariable regions of heavy and light chains b. constant regions of light chains c. constant regions of heavy chains d. the hinge region

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