Answer:
Step-by-step explanation:
IIada, Distance = speed*time, so speed = distance/time right?
The plane went the same distance each direction.
s - w = 40/30 = 4/3
s + w = 40/20 = 2
Adding the two equations together...
s = 5/3
w = 1/3
So the speed of the wind in miles per hour is 1/3
Answer:
Below in bold.
Step-by-step explanation:
5x - 3y = 1
3x- y = 5 Multiply this equation by -3:
-9x + 3y = -15 Now add this equation to the first equation:
-4x = -14
x = -14/-4 = 3.5.
Now substitute for x in equation 1:
5(3.5) - 3y = 1
-3y = 1 - 17.5
-3y = -16.5
y = 5.5.
Answer:
It is D
Step-by-step explanation:
Within each coordinate it represents (x,y)
The x moves along the horizontal line and the Y moves along the vertical line.
For example: For (-5,5) move to the left 5 times, then move up 5 times.
A negative X goes to the left and a negative Y goes down.
A positive X moves to the right and a positive Y moves up.
Lets try and solve them :-
multiply the second equation by 50, we get:-
-4x + 5y = 5 Now the first equation is:-
4x - 5y = 5
adding these 2 equations:-
0 + 0 = 10 which is absurd so
The answer is No solutions