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Help please Find the dot product, a * b. A=6i+5j, b= -5i +4i A.50 B. <1,9> C. -10 D. <-30,20> I think D is right but I have doubts
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Help please Find the dot product, a * b. A=6i+5j, b= -5i +4i A.50 B. <1,9> C. -10 D. <-30,20> I think D is right but I have doubts
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Nov 1, 2018
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Help please
Find the dot product, a * b.
A=6i+5j, b= -5i +4i
A.50 B. <1,9> C. -10 D. <-30,20>
I think D is right but I have doubts
Mathematics
college
Tianyang Li
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I hope this helps you
❗i^2= -1
A=11i
B= -i
A×B= 11i×(-i)
A×B= -11.i^2
A×B=11
Jonathan Roth
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Nov 2, 2018
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C is the answer ( i got 100%)
Ivan Neeson
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Nov 5, 2018
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Ivan Neeson
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