- Grade 11 and 12 Mathematics (Moderator: geoffrey)
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Author Question: If the variability of a set of data is very small, then the sample variance may be negative. ... (Read 32 times) |
- Grade 11 and 12 Mathematics (Moderator: geoffrey)
Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.