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Given that e= 8i – 6j and f= 4i + 11j, find 5f – 2e.
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Given that e= 8i – 6j and f= 4i + 11j, find 5f – 2e.

User David Moorhouse
by
3.9k points

2 Answers

6 votes

Answer:

41 + 67j

Explanation:

I took the quiz

User MJJames
by
3.8k points
5 votes

The Solution:

Given:


\begin{gathered} e=8i-6j \\ f=4i+11j \end{gathered}

Required:

Find 5f - 2e


5f=5(4i+11j)=20i+55j
2e=2(8i-6j)=16i-12j
5f-2e=20i+55j-(16i-12j)=20i+55j-16i+12j
5f-2e=(20-16)i+(55+12)j=4i+67j

Answer:


4i+67j

User Matteo Monti
by
4.2k points
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