The magnitude of a vector is the square root of the sum of the squares of its coordinates:
![||(a,b)|| = \sqrt{a^2+b^2}](https://tex.z-dn.net/?f=%7C%7C%28a%2Cb%29%7C%7C%20%3D%20%5Csqrt%7Ba%5E2%2Bb%5E2%7D)
So, for example, the first vector has magnitude
![||(2,1)|| = \sqrt{2^2+1^2}=\sqrt{4+1}=\sqrt{5}](https://tex.z-dn.net/?f=%7C%7C%282%2C1%29%7C%7C%20%3D%20%5Csqrt%7B2%5E2%2B1%5E2%7D%3D%5Csqrt%7B4%2B1%7D%3D%5Csqrt%7B5%7D)
The second vector has magnitude
![||(0,1)||=\sqrt{0^2+1^2}=\sqrt{0+1}=1](https://tex.z-dn.net/?f=%7C%7C%280%2C1%29%7C%7C%3D%5Csqrt%7B0%5E2%2B1%5E2%7D%3D%5Csqrt%7B0%2B1%7D%3D1)
You can go on like this with all the other cases
Answer:
180
Step-by-step explanation:
Area of troiangle=180
A+B+C=180
22+90+B=90
112+B=180
B=180-112
B=68
perimeter=A+B+C
22+90+68=180
Answer: x = 2
Step-by-step explanation:
The rule for reflecting over x = 2 is that y remains the same and you add how many units x = 2 is from the point.
x = 2 is has the coordinate of x = 2 and y = the y coordinate of the point.
A (-1, 1) Since the y coordinate of (-1, 1) is 1, x = 2 - (2, 1)
Add 3 units to 2, the x coordinate since -1, 1 is 3 units from 2, 1
2,1 --> 5, 1
I really didn't know how to explain but Im 100% sure Im right and I hoped this helped somehow.
![\huge\underline\bold{A} \underline\frak{nswer :}](https://tex.z-dn.net/?f=%5Chuge%5Cunderline%5Cbold%7BA%7D%20%5Cunderline%5Cfrak%7Bnswer%20%3A%7D)
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![\large\sf\to\green{explanation}](https://tex.z-dn.net/?f=%20%20%5Clarge%5Csf%5Cto%5Cgreen%7Bexplanation%7D)
- Pound is defined as the basic unit for weight in the Foot Pound Second (F.P.S) system and is equal to 16 ounces
![✠===============✠](https://tex.z-dn.net/?f=%E2%9C%A0%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%E2%9C%A0)
The basic units for length or distance measurements in the English system are the inch, foot, yard, and mile. Other units of length also include the rod, furlong, and chain. survey foot definition. In the English system, areas are typically given in square feet or square yards.
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<em>mark me brainliest please</em>
Answer:
D
Step-by-step explanation:
Got 100%