Answer:
The distance covered is 113.75 m
Step-by-step explanation:
As per the question:
The initial velocity of the train, v = 20 m/s
The final velocity of the train, v' = 6 m/s
Uniform deceleration, a = 1.6![m/s^{2}](https://tex.z-dn.net/?f=m%2Fs%5E%7B2%7D)
Or uniform acceleration, a = - 1.6![m/s^{2}](https://tex.z-dn.net/?f=m%2Fs%5E%7B2%7D)
<em>Here, the body decelerates, i.e., slows down at a uniform rate thus we take acceleration with negative sign.</em>
Now, to find the distance covered, s:
Using the eqn of Kinemetics:
![v'^{2} = v^{2} + 2as](https://tex.z-dn.net/?f=v%27%5E%7B2%7D%20%3D%20v%5E%7B2%7D%20%2B%202as)
![6^{2} = 20^{2} + 2(- 1.6)s](https://tex.z-dn.net/?f=6%5E%7B2%7D%20%3D%2020%5E%7B2%7D%20%2B%202%28-%201.6%29s)
![36 - 400 = - 3.6s](https://tex.z-dn.net/?f=36%20-%20400%20%3D%20-%203.6s)
![s = \frac{- 364}{- 3.6} = 113.75\ m](https://tex.z-dn.net/?f=s%20%3D%20%5Cfrac%7B-%20364%7D%7B-%203.6%7D%20%3D%20113.75%5C%20m)
1. Ano ang paksa ng kwento? A. Pagtulong sa kapwa C. Pasasalamat sa - 28… ... sa kapwa C. Pasasalamat sa mga tumulong B. B. Epekto ng bagyong Glenda D.
Divide:
( 8x^4 - 3x^2 + x - 10) by ( x - 1 ) ============================> 8x^5 − 8x^4 − 3x^3 + 4x^2 − 11x +10
Simplify:
(8x^4 − 3x^2 + x − 10)(x − 1)
(8x^4 + −3x^2 + x + −10)(x + −1)
(8x^4)(x) + (8x^4)(−1) +(−3x^2)(x) + (−3x^2)(−1) + (x)(x) + (x)(−1) + (−10)(x) +(−10)(−1)
8x^5 − 8x^4 −3x^3 + 3x^2 + x^2 − x − 10x +10
Hence, Your Answer, =====> 8x^5 − 8x^4 − 3x^3 + 4x^2 − 11x + 10
Hope that helps!!!! : )
Answer:
The description of Margot as a frail girl who had lost her vibrancy shows that she was in eager anticipation of the rain.
Step-by-step explanation:
The short story, "All Summer in a Day", tells of how a girl named Margot always stood differently from her classmates because she eagerly anticipated a time when the sun will come out as the scientists projected. It had been raining in this planet, Venus for seven years non-stop.
Margot who came from planet earth some five years ago could still clearly recall how the sun looked like and despite her description of it, the children still doubted her. On the day the sun finally came, the children locked Margot in a closet and she was unable to see the sun.
I:2x – y + z = 7
II:x + 2y – 5z = -1
III:x – y = 6
you can first use III and substitute x or y to eliminate it in I and II (in this case x):
III: x=6+y
-> substitute x in I and II:
I': 2*(6+y)-y+z=7
12+2y-y+z=7
y+z=-5
II':(6+y)+2y-5z=-1
3y+6-5z=-1
3y-5z=-7
then you can subtract II' from 3*I' to eliminate y:
3*I'=3y+3z=-15
3*I'-II':
3y+3z-(3y-5z)=-15-(-7)
8z=-8
z=-1
insert z in II' to calculate y:
3y-5z=-7
3y+5=-7
3y=-12
y=-4
insert y into III to calculate x:
x-(-4)=6
x+4=6
x=2
so the solution is
x=2
y=-4
z=-1