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4 years ago

Help please!!!!!!!!!!!!!

Mathematics

1 answer:

Dafna11 [192]4 years ago

7 0

Answer: A and C

Step-by-step explanation: Adding A and C, we get (-3-4i)+(13+i) we get 10-3i, the desired sum. Hope this helps! (Could I please have brainliest?)

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If u=<-4,8> and v=<-7,5>, v-5u= ? and ||v-5u|| is approximately?

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Answer:

Step-by-step explanation:

a) Given:

u= $\:$

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v-5u=<-7,5>-5<-4,8>

v-5u=<-7,5>+<20,-40>

v-5u=<-7+20,5-40>

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The magnitude of this vector is

||v-5u||= $\sqrt{13^2+(-35)^2}$

||v-5u||= $\sqrt{169+1225}$

||v-5u||= $\sqrt{1394}$

||v-5u||= $37.3units$ to the nearest tenth

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