Question: 15. (i) express 2AB + 5CD as a column vector, (ii) find the value of k if EF is parallel to AB, (iii) explain why

15. (i) express 2AB + 5CD as a column vector,

(ii) find the value of k if EF is parallel to AB,

(iii) explain why PQ is parallel to CD. Given that AB == (3) CD and PQ = 1 EF k

Given that AB == (3) CD and PQ = 1 EF k 7.5 ) and == 4

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