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
iren [92.7K]
3 years ago
8

How long in years, will it take for a quantity of plutonium-240 to decay to 25% of its original amount? K is the decay constant,

0.00011
Mathematics
1 answer:
Andru [333]3 years ago
5 0
Q(t)= 0.25Q k =0.00011 Now you can solve for t
You might be interested in
you have a large container of olive oil. You have used 22 1/2 quarts of oil. Twenty- five percent of the oil remain. How many qu
Alex Ar [27]
Answer:

7.5 quarts of olive oil remain.

Explanation:

Let

q = quarts of olive oil remain

<span>25%</span> of olive oil remains means that <span>75%</span> has been used.

22<span>12</span> quarts = 22.5 quarts used

<span><span>22.5.75</span>=<span>q.25</span></span>

Multiply both sides by .25 to isolate q.

<span><span>22.5.75</span><span>(.25)</span>=<span>q.25</span><span>(.25)</span></span>

<span><span>5.625.75</span>=q</span>

<span>7.5=<span>q</span></span>

3 0
3 years ago
Students were asked to choose their favorite sport
r-ruslan [8.4K]

Answer:

5/9-1/9=4/9

Step-by-step explanation:

5/9 chose basketball or soccer. 1/9 chose basketball.

<h3>answer is 4/9</h3>
4 0
3 years ago
What is the resulting equation when the expression for y in the second equation is substituted into the first equation?
Anni [7]

Answer: 3x + 6 -4x = 1

Simplify to -x + 6 = 1 because 3x - 4x = -1x

5 0
4 years ago
If you answer this you will get 69 points but please answer asap
spin [16.1K]

Answer:

I think the answer for the first one is 3 I am not sure about the second one

3 0
3 years ago
As shown in the graph, ΔGHI ≅ ΔG'H'I', since this is a vertical shift, and ΔG'H'I' ≅ ΔG''H''I'', since this is a horizontal shif
77julia77 [94]
D) (X,Y) <span> → (x + 4, y - 5).
HOPE THIS HELPED :-)</span>
4 0
3 years ago
Other questions:
  • When constructing parallel and perpendicular lines how are the steps simillar
    10·1 answer
  • F(x) = 4/5 x - 2 <br><br>Find f(3)<br><br><br><br>Answer is a fraction ​
    14·2 answers
  • 164.4 divided by 2.4
    13·2 answers
  • Solve -x/6 ≥ 3<br><br> A. x ≤ 18<br> B. x ≥ -18<br> C. x ≥ 18<br> D. x ≤ -18
    5·2 answers
  • Felicia is planning a bridal shower for her best friend. At the party, she wants to serve 3 beverages, 3 appetizers, and 3 desse
    6·1 answer
  • Help please! I don't understand what to do.
    15·2 answers
  • Please help with this Geometry question. I just need help with the first question.
    10·1 answer
  • Anyone know the answer ?
    7·1 answer
  • Someone plz help me with this??????????!!!!!!!!!!
    6·1 answer
  • A bag contains 3 red marbles, 7 blue marbles and 5 green marbles. If three marbles are drawn out of the bag, what is the exact p
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!