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
charle [14.2K]
3 years ago
11

Find the missing value for the radioactive isotope. (Round your answer to two decimal places.)

Mathematics
1 answer:
Otrada [13]3 years ago
4 0

Answer:

1.1289 grams ( approx )

Step-by-step explanation:

Since, the final quantity of an element which has half life of n periods,

A=P(\frac{1}{2})^{\frac{t}{n}}

Where,

P = initial quantity,

t = total number of periods,

Here, A = 1 gram, t = 1000 years, n = 5715 years,

By substituting the values,

1 = P(\frac{1}{2})^\frac{1000}{5715}

\implies P = 2^\frac{1000}{5715}\approx 1.1289 ( using calculator )

Hence, the initial quantity would be 1.1289 grams ( approx )

You might be interested in
Maria is renting kayaks from a local shop that charges a $10 fee, plus an hourly rate of $7.50.
omeli [17]

Answer:

8 hours

Step-by-step explanation:

70-10

60÷7.50= 8 hours

3 0
3 years ago
It costs $15 to attend a golf club with a local pro. Buckets of balls for practice during the club cost $5 each. Select the corr
Ksju [112]

Answer:

7 buckets

Step-by-step explanation:

50-15=35

35 divided by 5 is 7

4 0
3 years ago
Please help be fast I’m on a test
Leto [7]
Hundreds because the answer is 251 so the 2 is in the hundreds
8 0
3 years ago
In September, Jerry read for 2/5 of an hour every day for 20 days. How many
Effectus [21]

Answer:

Step-by-step explanation:

- 2/5 of an hour is equal to 24 min

- 24 times 20 is 480 minuets during September

- 480 minuets is 8 hours

7 0
3 years ago
Aiden has a goal to lose 5% of his current body weight. If Aiden's current weight is w pounds, which expression does NOT represe
butalik [34]
Hello! So, with Adian having a goal to lose 5% of his body weight, that means he will still have 95% of it left. The variable "w" represents the current amount of his weight. Multiplying by 1 will still give you his weight. Suppose he weighs 200 pounds. You plug in that as "w". Then, you would multiply that number by 5% (0.05) to see how much he would need to lose. 200 * 0.05 is 10. 200 - 10 is 190. Multiplying any number by 1 will get you to the same number. B and C are out, because they are basically the same equation, even when the "w" in answer choice C is distributed. A is out, because it shows the way the problem would be set up. D does not represent, because 1 is not his weight and it does not give a realistic answer on how much he needs to lose and weigh. Therefore, the answer is D.
3 0
3 years ago
Other questions:
  • Theoretical Probability
    15·1 answer
  • Y = -x + 2<br> y = 3x- 4<br> Whats x and y
    8·1 answer
  • What number must be added to 14,056 to result in a sum of 32,713
    7·2 answers
  • What is the value of x<br><br> Triangle with sides 10 6 x-6
    11·1 answer
  • Given ABCE is a rectangle, D is the midpoint of CE<br> Prove AD =~ BD
    7·1 answer
  • PLEASE HELP <br> **ONLY MATH HELPERS**
    10·1 answer
  • I'm confused on this
    8·1 answer
  • What is the reciprocal of 10/11
    15·1 answer
  • Find the values of a and b such that<br> x^2 + 3x + 4 = (x + a)^2+ b
    11·1 answer
  • Can anyone explain how this is done.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!