Answer:
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.
2x2-3x-20=0
4-3x-20=0
2-20=-16
-3x-16=0
-3x=16
x= -5.33333
I think i did it right. i hope this helps.
Its 27 if you’re adding at the bottom, but I cant really tell since it’s cropped
Answer:
The diver will be in free fall for 
seconds.
Step-by-step explanation:
The distance in feet, that an object falls in t seconds is given by the function 
.
Now, given that the height is 4800 feet and we have to calculate the number of seconds the diver was in a free fall.
Therefore, 
⇒ 
⇒ 
seconds.
Therefore, the diver will be in free fall for seconds. (Answer)
Answer:
420.9
Step-by-step explanation:
420.86827 ≈ 420.9 because we need to round to one decimal place.
Since 6 is greater than 5, we round 8 up to make it 9
420.9
If my answer is incorrect, pls correct me!
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-Chetan K
