You can buy 19 yes you should have change 40¢ would be your change
<span>60.5 milligrams per square centimeter
First, determine how many half lives have expired by dividing the time by the half-life. So:
55/20 = 2.75
That means that only 2^(-2.75) = 0.148650889 = 14.8650889% of the original substance remains. So just divide the amount remaining by 0.148650889 to get the original amount.
9 / 0.148650889 = 60.5445419
So originally, there was 60.5 milligrams per square centimeter 55 years ago.</span>
The answer is 10 because 5×2 is 10 and 10 times one is 10. So that's the lowest common denominator her.
What you need to do is find the smallest multiple that they both have (i forgot what that is called) list them like this:
12: 24 36 48 60 72
15: 30 45 60 75
60 is the lowest number that they both can multiply to
60 cups/lids is the answer
Answer choice B is most correct. For answer a, there would be less visitors the more it rains. For b, the more the item costs, the more sales tax you pay. For answer c, the more people seated at a table, the less space per person. And for answer d, the more cats, the less mice there would be.
