Answer: 16 g
Step-by-step explanation:
We can solve this with the Radioactive Half Life Formula:
Where:
is the final amount of radioactive calcium
is the initial amount of radioactive calcium
is the time elapsed
is the half life of radioactive calcium
Solving with the given data:
This is the amount of radioactive calcium left
I don't totally understand,but maybe it's 6(-31)=-186.
I don't really understand the question?
Answer:
x=0 y=0
Step-by-step explanation:
multiple the first equation by 2
after subtract equation 2 from 1
after getting x you substitute the value of x in any of the equation for your y
The first one is 90
The second one is 108
Answer:
1.22 feet, or 1 11/50 ft
Step-by-step explanation:
Find 1/25 th of 30 1/2 feet:
1 61 ft
----- * ---------- = 1.22 feet, or 1 11/50 ft
25 2
The length of the model is 1.22 feet, or 1 11/50 ft