The answer is C, which is 17+5(n- 1).
Answer:
B
Step-by-step explanation:
2.0 x 10^7
Answer:
7
Step-by-step explanation:
448 divided by 32 is 14 so then do 14 times 1/2 to get 7 centimeters
Answer:
2
Step-by-step explanation:
simplify......dndjddjejdjdjehdeww
Answer:
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.
