The median( middle number), and if there is an even amount of numbers (which is what there is in this problem, there will be 2 middle numbers.....so u take the 2 middle numbers...add them and divide by 2 to find the median.
(3 + 3) / 2 = 6/2 = 3....median is 3

the mean (average) can be found by adding up all the numbers and dividing by how many numbers there are. 55/16 = 3.4275 rounds to 3.43 <== mean

3 0

4 years ago

Consider the two vectors A with arrow = 3 î − ĵ and B with arrow = − î − 2 ĵ. (a) Calculate A with arrow + B with arrow 2 Correc

Verdich [7]

Answer:

Let $\vec{A}=3\hat{i}-\hat{j}$ and $\vec{B}=-\hat{i}-2\hat{j}$ .

$\vec{A}+\vec{B}=(3\hat{i}-\hat{j})+(-\hat{i}-2\hat{j})=2\hat{i}-3\hat{j}$

$\vec{A}-\vec{B}=(3\hat{i}-\hat{j})-(-\hat{i}-2\hat{j})=4\hat{i}+\hat{j}$

c) Now we calculate the direction of $\vec{A}+\vec{B}$ and $\vec{A}-\vec{B}$

We calculate the direction of $\vec{A}+\vec{B}$ like this:

$\theta=tan^{-1}(\frac{-3}{2})=-56,3^{\circ}$ . Since, $270\leq\theta\leq360$ , then the direction of $\vec{A}+\vec{B}$ is $360^{\circ}-\theta=360^{\circ}-56.3^{\circ}=303.7^{\circ}$ .

Now, for $\vec{A}-\vec{B}$

$\theta=tan^{-1}(\frac{1}{4})=14^{\circ}$ .

8 0

3 years ago

What is 1/2 times 2

kow [346]

1
3
2
3
7
5
hope that helps

5 0

3 years ago

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