Rounded to what? Nearest whole number?
Answer:
The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram
Step-by-step explanation:
Given as :
The amount of sodium-24 = 900 gram
The decay rate of sodium is 5 %
The time period for its decay = 90 hours

Or, 
Or, Final value of sodium -24 = 900 g ×
Or, Final value of sodium -24 = 900 g × 
∴ Final value of sodium -24 = 8.899 gram
Hence The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram Answer
Answer:
y=x
Step-by-step explanation:
4y+4+y=5x-5+9
5y+4=5x+4
5y=5x
y=x
Answer:
<h2>18</h2>
Step-by-step explanation:
The formula of a distance between two points:

We have the points (5, -7) and (5, 11). Substitute:

Answer:
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