Given that a= 3i+7j and b= 5i-12j find: (1) 12a+3b
2 answers:
Answer:
51i + 48j
Explanation:
Let's simplify step-by-step.
12(3i+7j)+3(5i−12j)
|Which is the equation.|
Distribute:
=(12)(3i)+(12)(7j)+(3)(5i)+(3)(−12j)
=36i+84j+15i+−36j
Combine Like Terms:
=36i+84j+15i+−36j
=(36i+15i)+(84j+−36j)
=51i+48j
Answer:
=51i+48j
I hope this helps, if it doesn't then just message me and ill be more than happy to help :)
51i+48j is the correct answer
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