Answer:
- 3 hours
- 1 hour 45 minutes
- 300 miles
Step-by-step explanation:
1. The trains are moving toward each other at a total speed of 50 +20 = 70 miles per hour. Together, they cover the 210 mile distance in ...
time = distance/speed
time = 210 mi/(70 mi/h) = 3 h
The trains collide after 3 hours.
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2. The fly is closing with the freight train at a speed of 100 +20 = 120 miles per hour. Together, the fly and the train cover the initial 210 mile distance in ...
(210 mi)/(120 mi/h) = 7/4 h = 1 hour 45 minutes
The fly first meets the oncoming freight train after 1 h 45 min.
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3. The fly is flying for all three hours before the trains collide, so, at 100 miles per hour, will fly 300 miles.
Answer:
Between B and C..
Step-by-step explanation:
I would say between B and C - then the remaining air in the tyre had to be let out.
It must be a rhombus, because that's the parallelogram with all sides equal.
It could be a square, but it doesn't have to be. A square is a rhombus
with special angles.
Answer:
they are both the same
Step-by-step explanation:
as you can see in the picture the angle of elevation is the same as the angle of depression.
I hope this helps☺
Answer:
it's answer is B
Step-by-step explanation:
f (x)=x (x-2)+3 (x-2)
=x2+x-6