If a variety jointly as b and c inversely as the square of d, and a = 60 when b = 5, c = 2 and d = 9, find a when b = 5, c = 7 and d = 11

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