Respuesta :

rdondero24
Make a proportion
50 sec/421 inches = 1 sec/?
? = 421/50
? =8.42 inches

8.42 inches per sec
onyebuchinnaji

The rate at which the roof opens is 8.42 inches/second

The given parameters:

the length at which the roof opens, L = 421 inches

time at which this roof opens, t = 50 seconds

To find:

  • the rate at which the roof opens

The rate at which the roof opens is given as the ratio of the length of the roof to the time at it opens;

[tex]rate = \frac{length \ of \ roof}{time} \\\\rate = \frac{421 \ inches}{50 \ seconds} \\\\rate = 8.42 \ inches/second[/tex]

Thus, the rate at which the roof opens is 8.42 inches/second

Learn more here: https://brainly.com/question/17214872

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