Question 1

If $a\ \ is\ the\ vector\ from\ A\left(1,2\right)\ to\ B\left(3,4\ \right)\ then\ \parallel a\parallel$

Accepted Answer

Answer

Answer

Question 2

$\sqrt{8}$ then $\hat{a\ }$ is given by

Accepted Answer

<math>\frac{\left(3\ \ ،\ \ 4\right)}{\sqrt{25}}</math>

Answer

<math>\frac{\left(3,4\right)}{\sqrt{16-9}}</math>

Answer

<math>\frac{\left(4,,3\right)}{\sqrt{9+16}}</math>

Answer

<math>\frac{\left(3\ ,\ 4\right)}{\sqrt{3+4}}</math>

Question 3

Accepted Answer

Answer

Answer

Answer

Question 4

$\sqrt{8}$ then

$a\cdot b=$

Accepted Answer

15

Answer

11

Answer

6

Answer

0

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