Answer:
2) Add 21 to both sides
Step-by-step explanation:
When solving for
, our goal to isolate
such that we have
set equal to something.
Therefore, we want to start by adding 21 to both sides. This leaves us with and we are one step closer to isolating
.
The sum of two vectors is (- 0.5, 10.1)
<u>Explanation: </u>
To add two vectors, add the corresponding components.
Let u =⟨u1,u2⟩ and v =⟨v1,v2⟩ be two vectors.
Then, the sum of u and v is the vector
u +v =⟨u1+v1, u2+v2⟩
(b)
Two vectors = ( 3, 4 )
angle 2π/3 = 120°
In x axis, the vector is = 7 cos 120°
In y axis, the vector is = 7 sin 120°
= 7 X 0.866
= 6.062
The second vectors are ( -3.5, 6.062)
Sum of two vectors = [( 3 + (-3.5) ), (4 + 6.062)]
= (- 0.5, 10.1)