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
FinnZ [79.3K]
2 years ago
11

Suppose that the halflife of a substance is 250 years . If there were ir 100 the substance , (a) give an exponential model for t

he situation, and (b) how much wil years?
can anyone answer this please:(
Mathematics
1 answer:
IgorLugansk [536]2 years ago
5 0
After 500 years one would have N nuclei of the original substance.

N = 100 * exp ( -ln(4) ) = 25

LOL.

I guess it is exp( - lamda * t)

Lamda, the decay constant is the ln(2) over the half life.

So we get exp( -ln(2)/250 * 500) or exp ( -ln(4) )
690 viewsView 1 Upvoter
Related Questions (More Answers Below)
You might be interested in
Find the value of A, B and C
iren2701 [21]
P/s : follow me and I will help you more about maths

5 0
3 years ago
A cd usually sells for $12.00. If the cd is 10% off, and sales tax is 5%, what is the total price of the cd, including tax?
Kazeer [188]

Answer:

$11.34 Discounted Price Including Tax

Step-by-step explanation:

CD is $12.00

10 percent off of 12 dollars is:

12 x .10 = $1.2

12 - 1.2 = $10.8 WITHOUT TAX!!

5/100 = 0.05

0.05 x 10.8 = .54 (Tax itself)

10.8 (Discounted price) + .54 (Tax) = $11.34 Discounted Price Including Tax


5 0
3 years ago
A box is created from a sheet of cardboard 20 in. on a side by cutting a square from each corner and folding up the sides. Let x
Digiron [165]
Assuming the sheet is a square

see diagram
the length will be 20-2x
the width will be 20-2x
and the height will be x

the volume will be (20-2x)(20-2x)(x)

5 0
3 years ago
10]The graph of a function is a line that passes through the coordinates (2, 11) and (8. 14).Which is an equation in terms of x
aksik [14]

We know that the graph of a function is a line that passes through the coordinates (2, 11) and (8, 14) and we must find the equation for the line.

1. We must use the next formula to find the slope

m=\frac{y_2-y_1}{x_2-x_1}

Where (x1, y1) and (x2, y2) are the points.

Now, replacing the points in the formula for the slope

m=\frac{14-11}{8-2}=\frac{3}{6}=\frac{1}{2}

2. We must replace the slope and one of the points in the next formula

y-y_1=m(x-x_1)

Now, replacing the slope and the point (2, 11)

\begin{gathered} y-11=\frac{1}{2}(x-2) \\  \end{gathered}

3. We must delete the parenthesis and solve the equation for y

\begin{gathered} y-11=\frac{1}{2}x-\frac{1}{2}\cdot2 \\ y-11=\frac{1}{2}x-1 \\ y=\frac{1}{2}x-1+11 \\ y=\frac{1}{2}x+10 \end{gathered}

ANSWER:

y=\frac{1}{2}x+10

8 0
1 year ago
Please guys i really need your help and please explain how you got it please
lina2011 [118]
The answer would be C because in order to find the area of a figure, you would need to multiply its height by its width. finding the area of a figure is the same as finding how many units are in a figure. because this is a square and all the sides are equal, by counting the total number of units, you can find the area.
5 0
3 years ago
Other questions:
  • Alim buys 2 T-shirt for $ 9.50 each, a 3 pack of socks for $ 7.95, and a pair of shoes for $ 49.95 . The sales tax is $6 percent
    6·1 answer
  • Write the expression in factored form: m²-n²
    9·2 answers
  • Howard has a garden in the shape of a rectangle. The length is 5.4 meters The width is 1.5 meters Howard will increase both the
    14·1 answer
  • Whats the answers i dont understand
    6·1 answer
  • Write the ratio as a fraction in simplest form 24 nickels to 48 nickels
    12·1 answer
  • Look at the lines in the grid below.<br> Which line represents a proportional relationship?
    10·1 answer
  • Shring's dining room table is round and has a radius of 4.5 feet. What is the tabletop's area?
    15·1 answer
  • Solve for x.<br> Your answer must be simplified.<br> -36 + X &lt; 8
    13·1 answer
  • *<br> What's the y-intercept of the following?<br> 4x + 2y = 20
    6·2 answers
  • Suppose a miniature golf player sinks a hole-in-one about 12% of the time on any given hole and is going to play 8 games at 18 h
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!