13 because 10 divided by 5 is 2 and you do 7 times 2 and it is 14
Then x plus 1 is 14
14 take away one
X equals to 13
7/2+3/9=
(7+3)+(0.2+0.9)=
10+1.1=11.1
Answer:
Step-by-step explanation:
given are two vectors
![B=-i-4j\\A = 3i-2j](https://tex.z-dn.net/?f=B%3D-i-4j%5C%5CA%20%3D%203i-2j)
a) A+B = sum of twovectors = simply adding corrsponding compnents
=![2i-6j](https://tex.z-dn.net/?f=2i-6j)
Magnitude of the above vector = ![\sqrt{2^2+6^2} \\=2\sqrt{10}](https://tex.z-dn.net/?f=%5Csqrt%7B2%5E2%2B6%5E2%7D%20%5C%5C%3D2%5Csqrt%7B10%7D)
Direction is making an angle of arc tan (-3) with x axis
b) A-B = Difference
= ![4i+2j](https://tex.z-dn.net/?f=4i%2B2j)
Magnitude of difference vector = ![\sqrt{4^2+2^2} \\=2\sqrt{5}](https://tex.z-dn.net/?f=%5Csqrt%7B4%5E2%2B2%5E2%7D%20%5C%5C%3D2%5Csqrt%7B5%7D)
Direction is making an angle of arctan (1/2) with positive x axis.
(angle = arctan (jcomponent/icomponent)