Answer:

Step-by-step explanation:
The formula of a slope:

We have the points

Substitute:

Length of train : 100
length of bridge : 400
distance covered by the train to cross the bridge : (100 + 400) = 500
time taken by the train to cross : 30
speed = distance / time
speed = 500/30
speed = 16.67 meters per second <===
C . Is the answer
Hope it helps
Answer:
14x +2
Step-by-step explanation:
(8x + 6x) +3 -5 = (14x) +3-5
14x (+ 3-5) = 14x (+ 2)
Answer:
∠z = 55°
Step-by-step explanation:
90° - 35° = 55°