Answer:
answer is D
Step-by-step explanation:
Answer:
We are given
Scientist begins with 150 milligrams of a radioactive substance
so,
we can use formula
we can plug Po=150
After 29 hours, 75 mg of the substance remains
so, at t=29 , P=75
we can plug it
now, we can solve for k
now, we can take ln on both sides
now, we can plug it back
and we get
we can plug t=33
we get
..............Answer
Step-by-step explanation:
Use the formula I=Prt
1200=5000*4r
1200/20000=r = 0.06 or 6% interest
Have a nice day :D
You wold add both together and then divide by 5 so the equation would be 52+46=98 98/5=19.6 so the answer is 19.6