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Discover Questions

Points A(2,6), B(5,7) and C(8,-2) lie on a circle. Show that the triangle ABC has a right angle. Please help? How can I figure this out f(x) = 3x3 - 7x + 3, f(5)? How much heat must be removed from 10 grams of water at 10 degree celsius to change it to ice at -10 degree celsius? Complete and balance the nuclear equation 9/4Be + 4/2He-? + 1/0n
Help!? What is the neutron:proton ratio for the nucleus 3/1 H?

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