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Author Question: In a contest, two tractors pull two identical blocks of stone the same distance over identical ... (Read 2763 times) |
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The horizontal fraction bar was introduced by the Arabs.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.