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sergey [27]
3 years ago
7

Stephanie ran four laps around the school track in 7min and 30 sec how many sec per lap is that

Mathematics
1 answer:
tester [92]3 years ago
3 0
Since each min is 60 seconds you multiply 60 by the number of minutes which is 7 and you get 420:

60x7=420 Then you add 30 seconds equaling 450 seconds total

Then you divide 450 by 4 since she ran 4 laps.

So, Stephanie ran 112.5 seconds per lap
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X is less than or equal to -5
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Felipe, Pedro y Miguel son fanáticos del cine. Felipe asiste cada 3 días; Pedro cada 6 días y Miguel cada 5 días. Los tres van j
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Answer:

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Step-by-step explanation:

Sabemos que:

Felipe asiste al cine cada 3 días

Miguel asiste cada 5 días.

Pedro asiste cada 6 días.

Los tres van juntos un día,  ¿dentro de cuántos días irán otra vez juntos?

Los 3 volverán a ir juntos luego de N días, tal que N es el menor múltiplo común de 3, 5 y 6.

Como 6 es múltiplo de 3, podemos ignorar al 3, y solo considerar al menor múltiplo en común de 5 y 6.

Además, como podemos reescribir estos números como un producto de números primos, así obtenemos:

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Felipe, Pedro y Miguel irán juntos al cine nuevamente dentro de 30 días.

La opción correcta es C.

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