What is the measure of angle ADC in a circle with center O, given angle AOB = 80°? (
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What are the characteristics of a hyperbola with a center at (0,0), vertical major axis, and vertices at (0,±3)?
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Question: "Simplify the expression (3 1/4 + 5 3/8) - (2 2/3 + 1 5/6) ÷ 2. Factorize the resulting number using prime factors. How many real numbers are between its square root and its cube root?"