- Grade 11 and 12 Mathematics (Moderator: geoffrey)
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Author Question: If P(A) = 0.60, P(B) = 0.63, and P(A and B) = 0.73, then P(A or B) is: a. 1.23. b. 0.50. c. 0.13. ... (Read 37 times) |
- Grade 11 and 12 Mathematics (Moderator: geoffrey)
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
On average, the stomach produces 2 L of hydrochloric acid per day.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.