1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dangina [55]
3 years ago
10

Iodine-125 has a half-life of about 60 days. How many milligrams of a 1000 mg sample will remain after 240 days?

Mathematics
1 answer:
Tomtit [17]3 years ago
3 0

240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

\dfrac{1000}{2^4}=\dfrac{125}2=62.5\,\mathrm{mg}

after 240 days.

You might be interested in
ANDREA IS A VERY GOOD STUDENT. THE PROBABILITY THAT SHE STUDIES AND PASSES HER MATHEMATICS TEST IS 17/20. IF THE PROBABILITY THA
Eva8 [605]
Let B be the event that Andrea passes her test, and let A be the event 
<span>that she studies. We are given that P(A and B) = 17/20, and that P(A) = 15/16. </span>

<span>Now the probability that Andrea passes her test given that she has studied </span>
<span>is represented by P(BlA). The formula your teacher gave you can be written as </span>
<span>P(BlA) = P(A and B) / P(A). </span>

<span>So P(BlA) = P(A and B) / P(A) = (17/20) / (15/16) = (17/20)*(16/15) = 68/75.</span>
3 0
3 years ago
Read 2 more answers
A computer that originally cost $899 is on sale for 15% off. What is the sale price of the computer?
Nata [24]
Sale price is $764.15
5 0
3 years ago
Read 2 more answers
Answer the question on the picture!
MariettaO [177]

Answer:

64 square inches

Step-by-step explanation:

im not 100% sure but i think its right

8 0
2 years ago
In a pair of complementary angles, the measure of the larger angle is twice that of the smaller
EleoNora [17]

Answer: 60 degrees

Step-by-step explanation:

6 0
2 years ago
The label on a gallon of ice cream shows the total fat contents as 9 grams (g) of which 6 grams are saturated fat. What is the r
Lunna [17]
The ratio is (saturated fat) : (total fat) ----- 6 grams : 9 grams ----- Divide both sides by 3 ----- 6/3 grams : 9/3 grams ----- 2 grams : 3 grams ----- 2:3 is the ratio ----- You can also represent it in fraction form : 2/3
5 0
2 years ago
Other questions:
  • A component is assembled in a four-step process. The probability of making a defect in step 1 is 10%; in step 2, 20%; in step 3,
    14·2 answers
  • How to write 94 million, 237 thousand , 108 in standard form
    5·2 answers
  • A blogger who is just starting out made three videos. So far, she has 312 subscribers, who watched one, two, or all three videos
    9·1 answer
  • What is the value of y in the solution to the system of equations?
    6·1 answer
  • Help help help helphelp h;i
    5·2 answers
  • Suppose you know a certain parabola has a vertex of (2, 1) and a y-intercept of 4. By symmetry, you can conclude that the parabo
    8·1 answer
  • What is the approximate 47? Give your answer and explain why it is correct. HELP
    8·2 answers
  • The perimeter of a triangle is
    13·1 answer
  • Solve this pls thank you
    8·1 answer
  • M
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!