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
Ierofanga [76]
2 years ago
13

Will mark brainliest, need help ASAP!

Mathematics
1 answer:
nikitadnepr [17]2 years ago
5 0

The percentage of the original sample that is left after 115 days is; 23.4733%

<h3>How to calculate the decay percentage?</h3>

Formula for radioactive decay is;

A = A₀ * (1/2)^(t/t_¹/₂)

where;

A = quantity of the substance remaining

A₀ = initial quantity of the substance

t = time elapsed

t_¹/₂ = half life of the substance

Thus;

A/A₀ =  (1/2)^(115/55)

A/A₀ =  0.234733 or 23.4733%

Read more about decay constant at; brainly.com/question/11117468

#SPJ1

You might be interested in
Brandon is baking cookies for a school bake sale. If he can make 2 dozen cookies in 23 minutes which is a reasonable estimate of
madreJ [45]
It would be around 138 minutes which is 2 hrs and 18 min so it would be C).
3 0
3 years ago
Read 2 more answers
In RST, which is a possible
dimaraw [331]
The possible side length is 7
8 0
3 years ago
Read 2 more answers
Please helllp!!! will give 50 points!!!!​
Anon25 [30]
Angle 8,2 that’s the answer
3 0
4 years ago
Read 2 more answers
URGENT!!! Please help!
serious [3.7K]

Answer:

13 ft

Step-by-step explanation:

c^2 = a^2 + b^2

C^2 = 5^2 + 12^2

C^2 = 25 + 144

c^2 = 169

c = 13 ft

3 0
3 years ago
Question 19 of 40
Anna71 [15]

The correct definition of an angle is D: A shape formed by two intersecting lines from a common point.

<h3>What is a line segment?</h3>

A line segment is extended infinitely in both directions whereas a 'ray' is a line segment that has one endpoint and extends infinitely in the other direction.

Now, an 'angle' is formed by two rays having a common end-point.

As the angle has a common endpoint,

Therefore it is not possible to form an angle by intersecting two rays having different endpoints.

Hence, option D is correct.

Learn more about line;

brainly.com/question/3455295

#SPJ1

3 0
2 years ago
Other questions:
  • A pencil factory makes 50 cases of pencils in 5 hours.
    11·1 answer
  • If |n| is a positive number, then n is a negative number. Which of the following would be a counterexample?
    8·1 answer
  • Can someone please help me? 20 Pts!!!
    14·2 answers
  • A basketball team scored 102 points in a game. Each basket is 2 points and each free throw is 1 point. Write a standard for equa
    12·2 answers
  • Vera hiked a total of 138 miles in 12 days. She hiked the same distance each day. Write and solve a multiplication equation to f
    14·2 answers
  • Three fourths of a class brought bundles of old papers to school. If 40 students were in class, how many students brought papers
    5·1 answer
  • Britney building dollhouse that was a scale model of her own house the dog House was 10 inches long while her actual house had a
    15·1 answer
  • New Orleans is 2 meters below sea level.
    9·1 answer
  • Can someone help me pls!!!!
    8·2 answers
  • I don't know how to solve it.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!