Step-by-step explanation:
X^2-2=2(x^2+4x-5)-(x-4)(x-4)
X^2-2=2(x^2+4x-5)-(x^2-8x+16)
X^2-2=2x^2+8x-10-x^2+8x-16
2x^2-x^2-x^2+8x+8x-10-16+2=0
16x-24=0
16x=24
X=2
Answer:
3z+3x=2
Step-by-step explanation:
3z+8=12+3x-2
collecting like terms
3z-3x=12-2-8
3z-3x=2
3z=2+3x
divide through by three
z= ⅔+x
Let .
Simplifying both you get .
The set conjunction is .
So the answer is B.
Hope this helps.
Answer:
The best estimate for the given calculation is 2.8.
Step-by-step explanation:
To determine the correct option regarding the result of this calculation, the mathematical resolution of the same must be developed:
-14 x 1 /9 x (-2 x 9/10) = X
-14 x 1 / 9 x (-18 / 10) = X
-14 x 1 / 9 x -1.8 = X
-14 / 9 x -1.8 = X
-1.555555 x -1.8 = X
2.8 = X
Therefore, the best estimate result for this mathematical operation is 2.8.
To find the fraction of the grouo that passed both exams, we need to first convert 75% into a fraction:
75%
=75/100
=3/4
We can then mutiply the fraction above by the students who passed the psychological exam:
3/4×3/5
=9/20
Therefore the answer is 9/20.
Hope it helps!