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Find a • b if a=3i+8j and b=-0.5-4j
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5 votes
Find a • b if a=3i+8j and b=-0.5-4j

User Tomas Panik
by
3.9k points

2 Answers

9 votes

Answer: -8j + 3i

Explanation:

3i + 8j · (- 0.5) - 4j

3i-8j · 0.5 - 4j

3i-4j-4j

3i-8j

-8j+3i

Hope this helps

User Klimaat
by
4.4k points
9 votes

Answer:

−1.5i−12ij−4j−32j2

Explanation:

User Suli
by
4.9k points
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