Element X is a radioactive isotope such that every 12 years, its mass decreases by half.
1 answer:
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Answer:
-6 1/2
Step-by-step explanation: M A T H W A Y Calculator
Answer:
A.
Step-by-step explanation:
We are given,
The cost of one book = $2.25
Since, it takes $2.25 to buy 1 book.
The, for $10, we can get i.e.
= 4.44
Since, number of books cannot be in decimals.
So, the closest integer to 4.44 is 4.
Hence, we can buy 4 books from $10.
Now, according to the options:
A.
B.
C.
D.
Hence, we see that from the options, A is correct.