milli = 1/1000, so milligams = 1/1000 of a gram.
So:
2000 milligrams * 1 gram/1000 milligrams = 2 grams.
115/29 should work for your problem
18.6?......if it is rounded to 18.6, the digit in the ones place would have to be 18.55 thru 18.59...the lowest being 18.55 and the highest being 18.59.
Reasoning : 18.59.....when rounded to the nearest tenths....u look at ur number in the tenths place, it is 5....now look at ur number to the right of it...if that number is 5 or above, u round the 5 to a 6...but if that number is 4 or below, the number would remain a 5.
Examples :
18.55 rounded to the nearest tenths = 18.6 (because the number to the right of 5 is 5, so we round up to 18.6
18.54 rounded to the nearest tenths = 18.5(because the number to the right of the 5 is 4....so we round it to 18.5
So you do 72+42 which equals 114 which means you have 114 friends
