Solution:
Two trains are moving in opposite direction with Speed 40 kmph and 60 kmph. Make train B stationary and then take the Speed of train A relative to the train B. So relative Speed of train A = 40 + 60 = 100 kmph. Before it crashes into the stationary train B it has to travel a Distance of 200 m which it will do in (0.2/100 ) hours. During this duration, the average Speed of bird has been 10 kmph i.e. before the crash total Distance covered by the bird = 0.2 * 10/100 km = 20 meters.
Hope it helps
It's B.
You can think of the action of multiplying matrix <em>A</em> onto any other matrix <em>X</em> as
• preserving the first row of <em>X</em> due to the +1 in the first column of the first row,
• negating the second row of <em>X</em> due to the -1 in the second column of the second row, and
• preserving the third row of <em>X</em> due to the +1 in the third column of the third row.
Insert (1,1) -> x=1, y=1 into the equation and check if both side are equal:
y=3x-2
1=3*1-2
1=1
so yes the ordered pair is a solution of the equation
Answer:
(-3 ,2.5)
Step-by-step explanation:
midpoint formula is
x1+x2 y1+y2
(___ , _____ )
2 2
(-7,-2) -7 is x1 i.e the first x point and -2 is y1 1st y point
(1,7) 1 is x2 i.e the second x point and 7 is y2 the second y point
now we use input the numbers to the formula
-7+1 -2+7
(____ , --------)
2 2
we the signs are different you subtract and use sign of greater number
-6 5
__ , ___
2 2
Now you divide
and here is the ordered pair for midpoint.
(-3 ,2.5)
I say subcategory would be a good answer
