plz ans this plz plz plz
Attachments:
minaminakshirout23:
hey r u there?
hey u theee
yo red
ya am back
;)
sorry I was not here that's why...and now am checking this
so how are you....am good
still studying maths...(not good)
and tell me if you are in discord.....okay
I don't have classes during exam.... wo! but you have...
Answers
Answered by
1
Step-by-step explanation:
26) let length of bridge be x
Note:
- shortcut to convert km/hr to m/s is 5/18
train length=110m
speed= 108km/hr = 108×5/18=30m/sec
time = 3sec
distance covered = train length+bridge length
speed = distance/time
30 = 110+x/3
30×3 = 110+x
90 = 110+x
x = 110-90
x = 20m
27) 6x+1/3 + 1 = x-3/6
6x+1/3 ×6 + 1×6 = x-3
12x+2 + 6 = x-3
12x + 8 = x - 3
12x - x = -8 -3
11x = -11
x = -11/11
x = -1
Similar questions