He would spend $46.57, I think(I am not that good with rounding)
Answer:
6 ft
Step-by-step explanation:
The answer is B, 20 balls in 4 seconds. Or 5 balls per second.
Element X is a radioactive isotope such that every 14 years, its mass decreases by half.
Given that the initial mass of a sample of Element X is 80 grams, how much of the
element