Answer:
20000+600+7
Step-by-step explanation:
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
Answer:
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Step-by-step explanation:

Move 5x to left hand side and change it's sign
⇒
Move 3 to right hand side and change it's sign
⇒
Collect like terms
⇒
Subtract 3 from 21
⇒
Divide both sides of the equation by -6
⇒
Calculate
⇒
Hope I helped!
Best regards!!
Answer: C. 2-3i
Step-by-step explanation:
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