A marble travel 300 cm in 6 seconds on the roller coaster what is the marble speed
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50

Step-by-step explanation:

50 cm/s

Step-by-step explanation:

The formula for speed is: s=d/t

Given

d=300 cm

t=6 s

Solve

s=d/t

s=(300)/(6)

s=50 cm/s

Hope this helps!! :)

Please let me know if you have any questions

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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