Is the square root of 87 rational of irrational? explain why

We have 9^2 = 81 and 10^2 = 100;

So, 81 < 87 < 100;

9^2 < 87 < ( 9 + 1 )^2;

9 < < 10;

Finally, is irrational.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m