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
MA_775_DIABLO [31]
2 years ago
15

Will give brainliest

Mathematics
1 answer:
Galina-37 [17]2 years ago
7 0

The percentage of the radioactive isotope left is 25.0000%.

<h3>What is the half life?</h3>

The half life of a radioactive isotope is the time that will elapse before only half of the number of original isotopes will remain.

Now;

We are told that;

Half life (t1/2) = 55 days

Time taken (t) =  115 days

Ratio of isotope remaining = N/No

Thus;

N/No = (1/2)^t/t1/2

N/No = (1/2)^115/55

N/No = (1/2)^2

N/No =1/4

Hence, the percentage = 1/4 * 100/1 = 25.0000%

Learn more about half life of an isotope:brainly.com/question/16387602

#SPJ1

You might be interested in
28+87 divided by 3•2 to the third power
erica [24]

Answer: =86

Step-by-step explanation:

* Hopefully the picture helps:) Mark me the brainliest:)

<em>∞ 234483279c20∞</em>

4 0
3 years ago
Read 2 more answers
The tempeture of chicken soup is 192.7 degrees F. As it cools the tempeture of the soup decreases 2.3F per minute.
IrinaK [193]

Answer:

Step-by-step explanation:

To find the answer to Part A, we can turn this into a simple equation:

192.7 - (2.3 times 25) = <em>temperature, </em>the missing value.

So therefore, after 25 minutes pass, the temperature is equal to

192.7 - 57.5, or:

135.2 = Answer to Part A.

Now, onto Part B. We can use <u>another</u> equation!

192.7 - 2.3x = 100.7

Now, we must solve the given equation, first by taking 100.7 from each side:

192.7 - 2.3x = 100.7

-100.7             -100.7

We are now left with: 92 - 2.3x = 0 - we must now add 2.3x to 2.3x and 0, giving us this:

92 = 2.3x, which is equivalent to 920 = 23x, if that is what you prefer to solve.

To give us our missing value (x), we can divide 920 by 23, giving us: x = 40. This is the answer to Part B: 40 minutes.

I hope this was really helpful! Tell me if you need any more help.

6 0
2 years ago
chantel Mcdale earns $12 per hour Monday to Friday and$18 per hour on the weekends. one week, she worked 49 hours and earned $65
garik1379 [7]

Chantel Mcdale worked 1 hr one the weekend.

6 0
3 years ago
What digit could be in the ten millions place of a number that is greater than 25 million but less than 73 million
irga5000 [103]
26-72 million because It has to be greater than 25 and less than 73 so you you a number in between
6 0
3 years ago
What is y=2x? (its in the mathematics Georgia book)
skelet666 [1.2K]
The answer would be X=1/2y
3 0
3 years ago
Other questions:
  • Nora's savings account has a balance of $3979. After 4 years, what will the amount of interest be at 12% compounded semiannually
    13·2 answers
  • List the next three terms in the following sequence: 1, 2, 4, 7, 11, 16,...
    12·1 answer
  • PLEASE HELP A line has a slope of Negative one-half and a y-intercept of –2. A coordinate plane. What is the x-intercept of the
    5·2 answers
  • Expand 3.56 × 1011???????
    13·2 answers
  • Find the scale factor for each scale.
    12·1 answer
  • The histogram shows the weights, in pounds, of checked luggage on a flight. The median weight of a checked bag is 27.5 pounds. H
    9·1 answer
  • Do not answer if you do not have right answer warning!
    7·1 answer
  • Plz help. <br> It’s algebra
    15·1 answer
  • Isabella drives at a constant 45 miles per hour is she drives for why miles and it takes her X hours what is the two variable eq
    11·1 answer
  • PLEASE HELP ME PLEASE<br> ITS IN THE PHOTO PLEASE<br> AND I DONT KNOW IF THATS THE ANSWER EITHER
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!