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
06-12-2016
it would be 5i x -2j
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