Answer:
x =-5 and y = -6
Step-by-step explanation:
In order to get the answer, I used the elimination/addition method
8y-9x= -3 <— I decided to eliminate the y
5y-8x= 10 <— I decided to eliminate the y
5(8y-9x = -3) <— switch up the number of y from the bottom to multiply
-8(5y-8x= 10) <— switch up the number of y from the top to multiply, but have a negative sign to it
So...our new equation will be....
40y - 45x = -15
+ -40y + 64x = -80
________________________
19x = -95
x = -5
8y-9x= -3
8y-9(-5) = -3
8y+45 = -3
- 45 = - 45
8y = -48
y = -6
Answer:
C. 300 miles per day
Step-by-step explanation:
If 3,000 is the distance for 10 days, in order to figure out 1 day you'll need to divide 3,000 by 10.
Which is 300
Given:
Line
To find:
Slope of the perpendicular line and slope of the parallel line.
Solution:
Equation of a given line:
Subtract 8x on both sides, we get
Divide by -6 on both sides.
Slope of this line is .
If two lines are perpendicular then their slopes are negative inverse of one another.
Slope of perpendicular line =
If two lines are parallel, then their slopes are equal.
Slope of perpendicular line =
No, modern train cannot travel on old railroad.
Step-by-step explanation:
In rail transport, track gauge is the spacing of the rails on a railway track and is measured between the inner faces of the load-bearing rails.
Most of the modern train are based on broad gauge. The separation in broad gauge is about 5 ft and 6 inches and in the standard gauge the separation between the tracks is 4 ft and inches. So for the modern train it is not possible to travel on the tracks whose separation is no more than 4.5 feet.