In june 2003, an italian named giancarlo bellingrath set a world record when he held his breath for 12 minutes and 47 seconds. how many milliseconds over 12 minutes was he?

He held his breath 12 minutes and 47 seconds, which means that he was 47 seconds over 12 minutes.

So, the question is: how many milliseconds are 47 seconds?

By definition, one second is 1000 milliseconds, so 47 seconds are 47000 milliseconds.

47000

Step-by-step explanation:

multiply 47 by 1000

answer: b.48 for

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional