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
Goryan [66]
2 years ago
5

Iodine-125 has a daily decay rate of about 1%. How many milligrams of a 500 mg sample will remain after 300 days? Round the answ

er to two decimal places. 0.60 mg 7.81 mg 24.52 mg 31.25 mg
Mathematics
2 answers:
Flauer [41]2 years ago
8 0

Answer:

24.52 mg will remain.

Step-by-step explanation:

Given,

The initial  quantity of Iodine-125  = 500 mg,

Also, it has a daily decay rate of about 1%.

Thus, the final quantity of Iodine-125 after x days,

A=500(1-\frac{1}{100})^x

=500(1-0.001)^x

=500(0.999)^x

For x = 300 days,

The remained quantity would be,

A=500(0.999)^{300}

=24.5204470356

\approx 24.52\text{ mg}

Third option is correct.

Amanda [17]2 years ago
7 0
So.. in this case, the starting amount is the 500mg sample... and the rate of decay, negative rate, is 1%, and at the time, the elapsed days is 0, to t = 0, P = 400

\bf \qquad \textit{Amount for Exponential change}\\\\
A=P(1\pm r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{starting amount}\to &500\\
r=rate\to 1\%\to \frac{1}{100}\to &0.01\\
t=\textit{elapsed period}\to &300\\
\end{cases}
\\\\\\
A=500(1-0.01)^{300}
You might be interested in
What is the square of one half?
Vlad1618 [11]

Answer:

One-half squared is one-fourth.

Step-by-step explanation:

When you divide fractions, you multiply the first term by the reciprocal of the second term. In this example, instead of multiplying 1/2 by 1/4, you now multiply 1/2 by 4. Therefore, one half is equal to 2 fourths.

3 0
2 years ago
Read 2 more answers
What is the image of the point (3, 2) after a rotation of 90° counterclockwise about the origin?​
GarryVolchara [31]
(-2,3). When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x).
7 0
3 years ago
Please answer correctly !!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!
solong [7]

Answer:

That looks like interior angle to me

x = 47 (since interior angles are congruent)

Step-by-step explanation:

I am really sleepy... :/

8 0
2 years ago
Sometimes data do not follow a normal distribution and are pulled toward the tails of the curve. When this occurs, it is referre
Airida [17]

Answer:

When the tail is pulled toward the right side, it is called a positively skewed distribution

Step-by-step explanation:

When the tail is pulled toward the right side, it is called a positively skewed distribution; when the tail is pulled toward the left side of the curve it is called a negatively skewed distribution (Watzlaf 2016, 361-362).

Generally the right side of a function is reserved for positive variables and the left side is used to represent negative variables, therefore when a function is pulled to the right is considered to be Positively skewed

6 0
3 years ago
Compare these two functions.<br> Which function shows a greater rate of change?
nata0808 [166]

Answer:

It's B

Step-by-step explanation:

"Brainlypatrol" is deleting my answers. >:(

5 0
2 years ago
Read 2 more answers
Other questions:
  • This is the problem that needs to be graphed 4y=-8x+12
    5·1 answer
  • PLEASE ANSWER QUICKLY!!!
    12·1 answer
  • Justine earned 26,000 during the first year of her job at city hall. after each year she received a 3% raise. find her total ear
    9·1 answer
  • Solve the following system of equations.<br> y=4x+11<br> y=x+38
    5·1 answer
  • Box A has a volume of 32 cubic meters. Box B is similar to box A. To create Box B, Box A's dimensions were tripled. What is the
    13·2 answers
  • Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x^2 + 8x + 5.
    12·1 answer
  • To determine a change of elevation on a topographic map what type of math would you use?
    6·1 answer
  • Kara uses 3 1/2 cups of flour to make 2 dozen cookies. How many cups of flour will she need to make 60 cookies?
    12·1 answer
  • In the similar triangles below, what is the measure of ∠F
    15·2 answers
  • Last weekend, the number of visitors at a zoo was z. This weekend, the number of visitors at the zoo can be represented by the g
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!