39*9 round to the nearest ten

39^9 or 39 x 9?

If it is 39*9 that would be 2.087283612x10^14

If it is 39 x 9 that would be 351 and to the nearest ten it would be 350.

If we have the speed of 18 miles per second, 18miles/s
to find out what is the speed in 1 minute we will need to multiply 18 by 60, as there are 60 seconds in 1 minute
18 miles1 second
?miles60 seconds(1min)
18*60=1080 miles
we have 1080 miles/minute
in 2 minutes we have 1080*2=2160 miles
hope it helps