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An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Are the corresponding angles congruent? explain why or why not.

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i