Question

Mario's heart beats 72 times per minute. how many times does it beat in a year. answer in standard form correct to 2 significant figuires

Answer 1

You would do 60 seconds multiplied by 24 hours in a day which would be 1440 beats then you would multiply by the number of days in a year which is 365 then you would get the awnser of  525,600 beats per year.

Answer 2

IT WILL BE 525969.2 MINUTES IN A YEAR SO 72*525969.2 IS 37869782.4
 HOPE I HELPED