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26-09-2018
Mathematics

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Find a ⋅ b. a = 8i + 6j, b = 4i + 5j

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27Toucan 27Toucan

26-09-2018

The answer is 62! This is a vector problem, so they’re looking for the dot product. You multiply all the coefficients with i and the ones with j so you’ll end up with 32 and 30. Add those two numbers together and you’ll get your final answer of 62

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