Answer:
Circumference: 25.12
Area: 50.24
Step-by-step explanation:
Circumference: 3.14*8
Area: 1/4*3.14*8*8
Answer:
4, P1 = P2
<=> 6 X 5x = x+14 + x+17+ 8x+9
<=> 30x = 10x + 40
<=> x = 2
5, P1 = P2
<=> 3 X 2x = 4 X (x+2)
<=> 6x = 4x + 8
<=> x = 4
Note:
X: multiply.
x: variable.
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.
The inequality is 5 explanation
Answer:
245
Step-by-step explanation:
1m-100cm
2.45m=2.45x100