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Find a ⋅ b. a = 9i + 5j, b = 4i + 3j
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22 votes
Find a ⋅ b.

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

User Huiyan Wan
by
3.7k points

2 Answers

10 votes
9i+5j x 4i+3j
Factor
=9i+20ij+3j
= (9+20j)i+3j
=3j+(9+20j)i =answer
User Marc Schulder
by
3.7k points
9 votes

Answer:

Explanation:

51

<13, 8>

<36, 15>

-21

User Stig Perez
by
4.2k points
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