js0ar3amsavin
js0ar3amsavin js0ar3amsavin
  • 06-12-2016
  • Mathematics
contestada

Find a ⋅ b.

a = 9i + 5j, b = 4i + 3j

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Аноним Аноним
  • 06-12-2016
I hope this helps you




(9i+5j)(4i+3j)



9i.4i+9i.3j+5j.4i+5j.3j


36i^2+27ij+20ij+15j^2


36i^2+47ij+15j^2
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amandmccal234
amandmccal234 amandmccal234
  • 06-12-2016
it would be 5i x -2j
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