Question

1. If a = 2(1, -7,2) b = (-2,3,5) c = (2, -2, 4) and i is the unit vector in the x-direction, then (a - 2b + 3c).i=
(a) 11
(b) 15
(c) 18
(d) 36​

Answer 1

a) 11
hope this help u

Answer 2

Explanation:

the 1st ans is correct i think you have a good calculating