Atrain 300m long is moving at a speed of54 km/hr and it took 40seconds to cross a bridge. the length of the bridge is

600m

Step-by-step explanation:speed =54×1000/3600=15m/s

Since speed =distance /time

Therefore distance =speed *time

=15*40=600m

300 meters

Step-by-step explanation:

54km/hr is equal to 15m/s (54/3.6 to get m/s)

The train took 40 seconds to cross the bridge while moving 15m/s.

Therefore it traveled 40*15 = 600 meters.

But we have to consider the length of the train is 300 meters, so the total length of the bridge will be 600-300 meters

= 300 meters

the answer is 24

step-by-step explanation:

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.