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
Papessa [141]
2 years ago
12

the half -life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mas

s. starting with 155 gramsbof a radioactive isotope, how much will be left after 3 half-lives?​
Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

after 3 half lives the amount should be reduced to 19.375g

Step-by-step explanation:

after the first half life , amount left =

155÷2

= 77.5g

2nd half life

77.5÷2

=38.75g

3rd Half life

38.75÷2

=19.375g

You might be interested in
1. Select all drawings in which a corresponding heighth for a given base bis correctly
Kobotan [32]
A,B,D,F
Reasoning, the height should be parallel to the base.
5 0
3 years ago
Solve for p.<br><br> 13 − 2p = 5<br><br> p =
Naya [18.7K]

Answer:

P = 4

Step-by-step explanation:

2 x 4 is 8

so 13 - 8 = 5

7 0
3 years ago
EASY MATH (no links or get reported)
katovenus [111]

Answer:

Find the Roots (Zeros) f(x)=x^3-6x^2+13x-20. f(x)=x3−6x2+13x−20 f ( x ) = x 3 - 6 x 2 + 13 x - 20. Set x3−6x2+13x−20 x 3 - 6 x 2 + 13 x - 20 equal to 0 0 .

Step-by-step explanation:

hope this helps

4 0
3 years ago
Find two consecutive integers whose sum is 901.
aleksandr82 [10.1K]

the answer is :

x+1 and x+2

6 0
3 years ago
Read 2 more answers
The number of pastries produced by a bakery can be represented by
antiseptic1488 [7]

Answer:

where are the others

Step-by-step explanation:

is there supposed to be other numbers?

3 0
3 years ago
Other questions:
  • 3.3 million births per year. How many births per minute?
    15·2 answers
  • What is 5292cm rounded to the nearest thousandth
    15·1 answer
  • 2. A paper airplane was thrown from the top of a tall building. The height of the paper airplane above the ground can be found u
    13·2 answers
  • Find x in this right triangle
    12·1 answer
  • A train goes up a hill with a 15º incline. If the train has constant speed of 22 m/s, what are the vertical and horizontal compo
    9·1 answer
  • Cameron made 1 loaf of bread. His family ate 4/6 of the loaf of bread. How much of the loaf of bread remain? Represent with the
    6·1 answer
  • The equation k(x+1)^2/3+(y+2)^2/4=1 represent circle if<br>​
    10·1 answer
  • For each equation below, indicate whether the equation has no solution, one solution, or infinitely many solutions.
    15·1 answer
  • Ms. Scagnetti tried very hard to make sure that nobody was left out during dance class. She thought she had a correct head count
    5·1 answer
  • Will mark the brainliest hurry!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!