Nickel-63 decays by β − emission to copper-63. write the complete decay formula for this process. 1. 63 28ni → 63 29cu + 0 −1 e + ν 2. 63 28ni → 63 29cu + 4 2he + 0 −1 e 3. 63 28ni → 63 29cu + 0 1 e + ν 4. none of these 5. 63 28ni → 63 28cu +

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte