Answer: The speed of the current is 1.5 km/h .
Step-by-step explanation:
Let x = speed of current and y = speed of canoe.
Since ,
As per given , we have
Adding (1) and (2) , we get
Put value of y in (1) , we get
Hence, the speed of the current is 1.5 km/h .
Answer:
i³ = - i
Step-by-step explanation:
<u><em>Explanation</em></u>:-
<u><em>Step(i)</em></u>:-
Given
we know that cos π = -1
sin π = 0
now given data
we can write
<u><em>step(ii)</em></u>:-
In complex numbers nth roots of a complex number
Z = r(cosθ+i sinθ)
Step(iii):-
now
By using trigonometric
<u><em>Final answer:-</em></u>
i³ = - i
Answer:
from left to right its square square rectangle
Step-by-step explanation:
Answer:Except -1 for all real values of k given the equations has a unique solution.
Step-by-step explanation:
Except -1 for all real values of k given the equations has a unique solution.
Explanation:
Compare given linear pair of equations
(3k+1)x+3y-2 = 0 ----(1)
(k²+1)x+(k-2)y-5=0 ----(2)
with
----(2)
----(3)
we get ,
and
\* Given linear equations have unique solution *\
=> 3k(k-2)+1(k-2)≠3k²+3
=> 3k²-6k+k-2≠3k²+3
=> 3k²-5k-3k²≠3+2
=> -5k ≠ 5
Divide each term by (-5) , we get
=> k ≠-1
Therefore,
Except -1 for all real values of k given the equations has a unique solution.