Two numbers in the domain are 2 and 5
Explanations:The domain of a function is a set of all the input values
In this case, the domain is a set of the values of x
The numbers in the x column are the numbers in the domain of table #1
These are 2, 5, 8, 11, 14, 17, 20
please help! Thank you
The unit rate of change in this situation is 0.25 mile per hour.
What is the unit rate of change in this situation?The unit rate of change in this situation is 0.25 mile per hour.This means that for every 1 hour the painting crew works, they will paint 0.25 mile of the road.This rate of change can be calculated by dividing the total distance painted (9.5 miles) by the total amount of time (hours) it took to paint it (38 hours). Therefore, 9.5 miles/38 hours = 0.25 mile/hour.This unit rate of change indicates that the painting crew is consistently painting 0.25 mile of the road per hour.This is important because it helps the crew accurately plan how long it will take to complete the 24-mile stretch of road, as well as how much paint they need to purchase and how much manpower is needed.To learn more about the unit rate of change refer to:
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The concept of best-, worst-, and average-case analyses extends beyond algorithms to other counting problems in mathematics. Recall that the height of a binary tree is the number of edges in the longest path from the root to a leaf. Find the best-case height of a binary tree with seven nodes.
Freemont run club surveyed a random sample of 30 of their members about their running habits
The reasonable estimate would be 25
How to solve for the estimateWe have to solve this using the rule of 3
9 out of 30 members said that they run more than 5 days a week.
We will form the equations
when 9 ran = 30 menbers
when n ran = 84 members
we will then cross multiply
84 x 9 = 30 x n
n = 25.2
When we round this, the reasonable estimate would be 25
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Complete question
Freemont Run Club surveyed a random sample of 30 of their members about their running habits. Of the members surveyed, 9 said that they run more than 5 days a week.
There are 84 Freemont Run Club members.
Based on the data, what is the most reasonable estimate for the number of Freemont Run Club members who run more than 5 days a week?
Philip has been experimenting with new recipes at his bakery for the past 8 months. This month, he tried a recipe for lavender vanilla muffins and gave samples to his customers. He asked them to rate the muffins on a scale of 1 to 10 stars. The median rating was 7 stars, and the interquartile range was 4 stars. ) What can you conclude from these data and statistics? Select all that apply. () No customer gave the muffins fewer than 8 stars. A typical rating for the muffins was 7 stars. The middle 50% of customer ratings had a range of 4 stars. Submit
which equations are related equations to x + 4 = 15 select each correct answer A.x=15+4 b.x+4=15 c.4=15-x d.x=15-4
Answer:
C. x + 4 = 15
D. 4=15−x
Step-by-step explanation:
Well, C is the same exact problem but D could be it too because it is easier to solve for X.. I'm pretty sure you can choose 2 answers
Mr. Smith makes two dozen cupcakes. Each cupcake weighs 27.2 grams. What is the weight of all the cupcakes in grams?54.4 grams
A:652.8 grams
B:326.4 grams
C:163.2 grams
D:54.4 grams
Answer: The answer is 652.8
Step-by-step explanation:
First, one dozen cupcakes is 12.. So do 12*2=24 to get two dozen cupcakes.
Next, do 27.2*24=652.8
Graph the data in the table
Interactive Practice: Understand Statistical Questions and Data Distributions
Each day for three weeks, Isaias records the number of eggs his chickens lay. The frequency table
shows his data.
Which statement describes the data distribution?
The frequency increases as the number
of eggs increases.
The value with the greatest frequency is
6 eggs.
The range is 8 eggs.
The distribution is spread from 2 eggs to
7 eggs.
Number of Eggs
4
5
6
7
8
||||
11
Y
X
Understanding statistical questions and data distributions is an important concept in data analysis and statistics. A statistical question is one that can be answered by collecting and analyzing data.
These questions typically ask about a population or group of individuals and are often related to trends or patterns.
Data distributions refer to the way data is spread out or distributed within a dataset. This can include measures like the mean, median, and standard deviation. Understanding data distributions is important for making accurate interpretations and predictions based on the data.
To practice understanding statistical questions and data distributions, it's important to work with real-world datasets and ask questions that can be answered using statistical analysis.
This can involve looking at trends and patterns in the data and interpreting the results in a meaningful way. By building these skills, you can become better equipped to analyze and interpret data in a variety of settings.
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Solve the systems of equations by using the substitution method,show your work.
3x - 8y = -50
6y = x
Please.Help
John has 312ft of fencing for a rectangular garden. If the garden’s length is to be 6 ft more than 5 times its width, what should the gardens dimensions be?
Step-by-step explanation:
The given is that John has 312ft of fencing. (Think of the 312ft as the perimeter)
The garden's legth is 6 ft more than 5 times it's width.
Let X be the garden's width:
This is what we know about the length:
It is 5 times + 6 more than the width
Now that we know this, lets set an equation to find the garden's dimentions.
X + (5X+6) = 312
(because we know Y = X * 5 + 6)
Now it's time to simplify:
Simplified X is equal to 51, so this is the length.
From the given the length is 5 times + 6 more than the width so the length is 5*51+6 which is 261
Answer:
The width is 51 and the length is 261. Hope this is correct and hope this helps. Brainliest would help :)
2) √51 is closest to which whole
number?
After cοmpleting the task, we can state that The whοle number clοsest tο expressiοn 7.141 is 7. Therefοre, √51 is clοsest tο the whοle number 7.
What is whοle number?The whοle numbers are the part οf the number system which includes all the pοsitive integers frοm 0 tο infinity. These numbers exist in the number line. Hence, they are all real numbers. We can say, all the whοle numbers are real numbers, but nοt all the real numbers are whοle numbers.
Thus, we can define whοle numbers as the set οf natural numbers and 0. Integers are the set οf whοle numbers and negative οf natural numbers. Hence, integers include bοth pοsitive and negative numbers including 0. Real numbers are the set οf all these types οf numbers, i.e., natural numbers, whοle numbers, integers and fractiοns.
√51 is apprοximately equal tο 7.141. The whοle number clοsest tο 7.141 is 7.
Therefοre, √51 is clοsest tο the whοle number 7.
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Can you please help me i want to know the steps to solve this problem i dont want the answer so i can learn to do this on my own
Answer:
Hint: everything in that big [] is to the power of zero. anything to the power of zero is one. so
1+(6-8)=?
What is equivalent to 56 − 7 + ( 26 − 4 ) ÷ 2
Answer:
60
Step-by-step explanation:
56-7+22÷2
56-7+11
67-7=60
hope it helps thanks
triangle ABC is congruent to triangle BAD
What is the length of BD?
What is the measure of <BAD?
Answer:
BD = 16, ∠ BAD = 45°
Step-by-step explanation:
Given that Δ ABC and Δ BAD are congruent, then corresponding sides and corresponding angles are congruent, then
BD = AC = 16
and
∠ BAD = ∠ ABC = 45°
Answer:
BD=16, <BAD=45⁰
the triangle is congruent to triangle BAD is SAS
Find the polar equation of the conic with focus at the pole, directrix y=3 and eccentricity of 2.
To find the polar equation of a conic with focus at the pole, directrix y=3, and eccentricity of 2, we can use the definition of a conic in polar coordinates.
The general form of the polar equation for a conic with focus at the pole is given by:
r = \(\frac{ed}{1+e\cos(\theta-\theta_0)}\)
Where:
- r is the distance from the origin (pole) to a point on the conic.
- e is the eccentricity.
- d is the distance from the pole to the directrix.
- θ is the angle between the polar axis and the line connecting the pole to a point on the conic.
- θ_0 is the angle between the polar axis and the line connecting the pole to the focus.
In this case, the focus is at the pole, so θ_0 = 0. The directrix is y = 3, which means its distance from the pole is d = 3. The eccentricity is given as 2, so e = 2.
Substituting these values into the general equation, we get:
r =\(\frac{2\cdot3}{1+2\cos(\theta-0)}\)
Simplifying further:
r =\(\frac{6}{1+2\cos(\theta)}\)
Therefore, the polar equation of the conic with focus at the pole, directrix y=3, and eccentricity of 2 is:
r =\(\frac{6}{1+2\cos(\theta)}.\)
This equation describes the shape of the conic in polar coordinates, where r represents the distance from the origin to a point on the conic, and θ represents the angle between the polar axis and the line connecting the origin to the point.
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To find the distance between (-2,-3) and (4,1), Peggy's teacher drew a diagram and marked blue lines to represent the legs of a right triangle. Peggy then used 42 and 62 to find the distance represented by the red segment. What distance did she find ?
A √114
B √52
C 2020
D 5252
E 25
By using the formula for the distance we will see that the correct option is B:
√52
What distance did she find?
We will use the general formula to find the distance between two points (a, b) and (c, d)
it is:
distance = √( (a - c)^2 + (b - d)^2)
Here we want to find the distance between the points (-2,-3) and (4,1), if we use the above formula we will get:
distance = √( (-2 - 4)^2 + (-3 - 1)^2) = √( 36 + 16)
distance = √52
The correct option is B.
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A random sample of 20 recent weddings in a country yielded a mean wedding cost of $26,326.44. Assume that recent wedding costs in this country are normally distributed with a standard deviation of $7700. Complete parts (a) through (c) below.
a) 95% confidence interval for the meancost, μ, of all recent weddings in this country = (22,550.95, 30,226.40).
b) The interpretation of the confidence interval at 95% confident is that the mean cost, μ,of all recent weddings in this country is somewhere within the confidence interval
c) The population mean may or may not lie in this interval, but we can be 95% confident that it does.
Sample size = 20
Sample Mean = $26,388.67
Sample Standard deviation = $8200
Confidence Interval = (Sample mean) ± (Margin of error)
Sample Mean = 26,388.67
Margin of Error = (Critical value) × (standard Error of the mean)
To find the critical value from the t-tables, we first find the degree of freedom and the significance level.
Degree of freedom = n - 1 = 20 - 1 = 19.
Significance level for 95% confidence interval will be:
(100% - 95%)/2 = 2.5% = 0.025
t (0.025, 19) = 2.086
Standard error of the mean = σₓ = (σ/√n)
σ = standard deviation of the sample = 8200
n = sample size = 20
σₓ = (8200/√20) = 1833.6
99% Confidence Interval = (Sample mean) ± [(Critical value) × (standard Error of the mean)]
CI = 26,388.67 ± (2.093 × 1833.6)
CI = 26,388.67 ± 3,837.7248
99% CI = (22,550.9452, 30,226.3948)
99% Confidence interval = (22,550.95, 30,226.40)
a) 95% confidence interval for the meancost, μ, of all recent weddings in this country = (22,550.95, 30,226.40).
b) The interpretation of the confidence interval at 95% confident is that the mean cost, μ,of all recent weddings in this country is somewhere within the confidence interval
c) The population mean may or may not lie in this interval, but we can be 95% confident that it does.
Therefore, we get the results as:
a) 95% confidence interval for the meancost, μ, of all recent weddings in this country = (22,550.95, 30,226.40).
b) The interpretation of the confidence interval at 95% confident is that the mean cost, μ,of all recent weddings in this country is somewhere within the confidence interval
c) The population mean may or may not lie in this interval, but we can be 95% confident that it does.
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Your question was incomplete. Please refer the content below:
A random sample of 20 recent weddings in a country yielded a mean wedding cost of $ 26,388.67. Assume that recent wedding costs in this country are normally distributed with a standard deviation of $8200.Complete parts (a) through (c) below. A. Determine a 95% confidence interval for the meancost, μ, of all recent weddings in this country. The 95% confidence interval is from $_________ to $__________.b) Interpret your result in part (a). Choose the correct answer below. A. We can be 95% confident that any randomly selected recent wedding cost in this country is somewhere within the confidence interval B. We can be 95% confident that the sample cost of recent weddings in this country is somewhere within the confidence interval. C. The mean cost, μ,of all recent weddings in this country is somewhere within the confidence interval. D. We can be 95% confident that the mean cost, μ,of all recent weddings in this country is somewhere within the confidence interval. C. Does the mean cost of all recent weddings in this country lie in the confidence interval obtained in part (a)? Explain your answer. A. Yes, since the confidence interval must contain the sample and population means. B. The population mean may or may not lie in this interval, but we can be 95% confident that it does. C. The sample mean may or may not lie in this interval, but we can be 95% confident that it does. D. No, since there is a 5% chance that the population mean does not lie in the confidence interval.
An adult rhino weighed 4,000 pounds. How
many tons does the adult rhino weigh?
A. 1 Ton
B. 2 Tons
C. 3 Tons
D. 4 Tons
Pure gold has a density of 19.32 g/cm³. If a cylindrical piece of pure gold had a mass of 1699.48 g, and a radius
of 2 cm, what is the height of the piece?
The height of the cylindrical piece of pure gold with density and mass of 19.32 g/cm³ and 1699.48g, having a radius of 2cm is 7cm.
What is the height of the piece of the cylindrical gold?The volume of a cylinder is expressed as;
V = π × r² × h
Where r is radius of the circular base, h is height and π is constant pi ( π = 3.14 )
Also, density is expressed mathematically as;
p = m / v
Given that;
Density of pure gold p = 19.32 g/cm³Mass of the gold cylinder = 1699.48 gRadius of the cylinder r = 2cmVolume of the cylinder V = ?Height of the cylinder h = ?First, we determine the volume of the cylinder.
Density = Mass / Volume
Volume = Mass / Density
Volume = 1699.48g / 19.32g/cm³
Volume = 87.9648 cm³
Next, we determine the height.
V = π × r² × h
87.9648 = 3.14 × (2)² × h
87.9648 = 3.14 × 4 × h
87.9648 = 12.56 × h
h = 87.9648 / 12.56
h = 7cm
Therefore, the height of the cylinder is 7cm.
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Someone please help and show work
Mean - this is the average. Add up the numbers and divide by the count of the numbers in the data set.
11+13+14+16+17+18+20+20+21+24+25+29 = 228
There are 12 numbers, so divide by 12.
228/12 = 19. The mean is 19.
Median - - - this is the MIDDLE number. Your data is already in numerical order (hooray!) so there are 12 numbers. Since it's even, we'll take the average of the 2 middle numbers. The 6th number is 18 and the 7th number is 20. The average of these is 19. So the median is 19.
(Side note: yes, median and mean can be the same.)
Mode - - - this is repeat/most common numbers! 20 repeats. 20 is the mode.
Range - - - biggest number is 29, littlest is 11. The range is 29-11 = 18.
Four sandwiches and one order of soda together cost $11.50, whereas one sandwich and four orders of soda together cost $8.50. What is the total cost of three sandwiches
and three orders of soda?
Solving a system of equations we can see that the total cost of three sandwiches and three orders of soda is $12.
What is the total cost of three sandwiches and three orders of soda?Let's define the variables:
x = cost of a sandwich.
y = cost of a soda.
We can write the system of equations:
4x + y = 11.50
x + 4y = 8.5
We can isolate x on the last equation to get:
x = 8.5 - 4y
Replacing that on the first equation we will get:
4*(8.5 - 4y) + y = 11.5
Now we can solve this for y.
34 - 16y + y = 11.5
34 - 15y = 11.5
34 - 11.5 = 15y
22.5 = 15y
22.5/15 = y
1.5 = y
Then the value of x is:
x = 8.5 - 4*1.5 = 2.5
Then the cost of 3 sandwiches and 3 orders of soda is:
cost = 3*2.5 + 3*1.5 = 12
The cost is $12.
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Consider the linear function that is represented by the equation y = negative 10 x + 6 and the linear function that is represented by the equation y minus 36 = 8 (x minus 4). Which statement is correct regarding their slopes and y-intercepts?
Answer: The function that is represented by the equation y = negative 10 x + 6 has a steeper slope and a greater y-intercept.
Step-by-step explanation: I took the unit test on edge hoped this helped <3
We want to compare the slopes and y-intercepts of two given linear functions.
The comparations that we can make are:
The first line has a larger y-intercept.The second line has a larger slope.The general linear function in the slope-intercept is:
y = a*x + b
where a is the slope and b is the y-intercept.
Here, the two given lines are:
y = -10*x + 6
(here we can see that the slope is -10 and the y-intercept is 6).
The other line is:
y - 36 = 8*(x - 4)
Writing this in the slope-intercept form we get:
y = 8*x - 8*4 + 36
y = 8*x - 32 + 36
y = 8*x + 4
Then the slope is 8 and the y-intercept is 4.
Then the comparations that we can make are:
The first line has a larger y-intercept.The second line has a larger slope.If you want to learn more, you can read:
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PLZ HELP FAST I'm pretty sure that the stuff i put in the boxes is correct
Answer:
3(x + 4)- X= 12
Step-by-step explanation:
solve for x image attched please help
Answer:
x/4 = 36/x
Step-by-step explanation:
You want the proportion relating the altitude of the right triangle to the segments of the hypotenuse.
Similar trianglesAll the triangles in this figure are similar, so the ratios of corresponding sides are the same:
long leg/short leg = x/4 = 36/x
The proportion of interest is ...
\(\boxed{\dfrac{x}{4}=\dfrac{36}{x}}\)
__
Additional comment
The solution is ...
x² = 4·36
x = 2·6 = 12
<95141404393>
PLS HELP THANK YOUUUUUUU
pls hurry will give brainliest
What divides the Rohingya from the rest of the population of Myanmar?
Answer:
The nation was divided by religion and history. Most of the people in Myanmar were Buddhist, but a minority were Muslim. They lived mostly on the western edge of the country, in a section known as the Rakhine State. It is one of seven states within the nation. They were known as Rohingya.During World War II, the Buddhist population fought for the Japanese, who occupied the island. The Rohingya sided with the Allies. They hoped to gain independence after the war, but that did not happen.The government then began doing things to harm the Muslims. In 1982, they took away civil rights for the Rohingya. They could not go to school or have health care. Thousands began leaving the country.
100 Points! Geometry question. Photo attached. Please show as much work as possible. Thank you!
The length KL is 8 units
The value of x is undefined
The length KL is 12 units
Calculating the length KLFrom the question, we have the following parameters that can be used in our computation:
The rhombus
Also, we have
DK = 8
A rhombus is a quadrilateral with all sides equal.
So, we have
KL = 8
Calculating the value of xHere, we have
SKAL = 2x - 8
There is no point S on the rhombus
This means that
x = undefined
Calculating the length KLHere, we have
DM = 5y + 2 and DK = 3y + 6
A rhombus is a quadrilateral with all sides equal.
So, we have
5y + 2 = 3y + 6
Evaluate
2y = 4
Divide
y = 2
So, we have
KL = 5 * 2 + 2
KL = 12
Hence, the length KL is 12 units
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A survey found that women's heights are normally distributed with mean 63.6 in and standard deviation 2.5 in. A branch of the military requires women's heights to be between 58 in and 80 in.
a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall?
b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements?
Answer:
(A)
Step-by-step explanation:
The survey follows of women's height a normal distribution.
The height of 98.51% of women that meet the height requirement are between 58 inches and 80 inches.
The new height requirements would be 57.7 to 68.6 inches
The given parameters are:
\mathbf{\mu = 63.5}μ=63.5 --- mean
\mathbf{\sigma = 2.5}σ=2.5 --- standard deviation
(a) Percentage of women between 58 and 80 inches
This means that: x = 58 and x = 80
When x = 58, the z-score is:
\mathbf{z= \frac{x - \mu}{\sigma}}z=
σ
x−μ
This gives
\mathbf{z_1= \frac{58 - 63.5}{2.5}}z
1
=
2.5
58−63.5
\mathbf{z_1= \frac{-5.5}{2.5}}z
1
=
2.5
−5.5
\mathbf{z_1= -2.2}z
1
=−2.2
When x = 80, the z-score is:
\mathbf{z_2= \frac{80 - 63.5}{2.5}}z
2
=
2.5
80−63.5
\mathbf{z_2= \frac{16.5}{2.5}}z
2
=
2.5
16.5
\mathbf{z_2= 6.6}z
2
=6.6
So, the percentage of women is:
\mathbf{p = P(z < z_2) - P(z < z_1)}p=P(z<z
2
)−P(z<z
1
)
Substitute known values
\mathbf{p = P(z < 6.6) - P(z < -2.2)}p=P(z<6.6)−P(z<−2.2)
Using the p-value table, we have:
\mathbf{p = 0.9999982 - 0.0139034}p=0.9999982−0.0139034
\mathbf{p = 0.9860948}p=0.9860948
Express as percentage
\mathbf{p = 0.9860948 \times 100\%}p=0.9860948×100%
\mathbf{p = 98.60948\%}p=98.60948%
Approximate
\mathbf{p = 98.61\%}p=98.61%
This means that:
The height of 98.51% of women that meet the height requirement are between 58 inches and 80 inches.
So, many women (outside this range) would be denied the opportunity, because they are either too short or too tall.
(b) Change of requirement
Shortest = 1%
Tallest = 2%
If the tallest is 2%, then the upper end of the shortest range is 98% (i.e. 100% - 2%).
So, we have:
Shortest = 1% to 98%
This means that:
The p values are: 1% to 98%
Using the z-score table
When p = 1%, z = -2.32635
When p = 98%, z = 2.05375
Next, we calculate the x values from \mathbf{z= \frac{x - \mu}{\sigma}}z=
σ
x−μ
Substitute \mathbf{z = -2.32635}z=−2.32635
\mathbf{-2.32635 = \frac{x - 63.5}{2.5}}−2.32635=
2.5
x−63.5
Multiply through by 2.5
\mathbf{-2.32635 \times 2.5= x - 63.5}−2.32635×2.5=x−63.5
Make x the subject
\mathbf{x = -2.32635 \times 2.5 + 63.5}x=−2.32635×2.5+63.5
\mathbf{x = 57.684125}x=57.684125
Approximate
\mathbf{x = 57.7}x=57.7
Similarly, substitute \mathbf{z = 2.05375}z=2.05375 in \mathbf{z= \frac{x - \mu}{\sigma}}z=
σ
x−μ
\mathbf{2.05375= \frac{x - 63.5}{2.5}}2.05375=
2.5
x−63.5
Multiply through by 2.5
\mathbf{2.05375\times 2.5= x - 63.5}2.05375×2.5=x−63.5
Make x the subject
\mathbf{x= 2.05375\times 2.5 + 63.5}x=2.05375×2.5+63.5
\mathbf{x= 68.634375}x=68.634375
Approximate
\mathbf{x= 68.6}x=68.6
Hence, the new height requirements would be 57.7 to 68.6 inches
A 98% confidence interval for a proportion is found to be (0.62, 0.68).
What is
the sample proportion?
O A. 0.66
OB. 0.64
O C. 0.65
O D. 0.68
Answer:
I think the answer is C ,The sample proportion is the fraction of samples which were successes, so. (1) For large , has an approximately normal distribution.
Step-by-step explanation:
If the queston true please votes 5 stars and mark as brainliest for me.Thank you so much
Given that a 98% confidence interval for a proportion is found to be (0.62, 0.68). The sample proportion will be 0.65.
What is confidence interval for population proportion?Formula to calculate the confidence interval for population proportion p :-
\(p' - Z_{\alpha }\sqrt{\frac{p'q'}{n} } < p < p' + Z_{\alpha }\sqrt{\frac{p'q'}{n} }\)
Where,
p is the population proportion.
p' is the sample proportion.
n is the size of the sample.
\(Z_{\alpha }\) is the desired degree of confidence.
Given that a 98% confidence interval for a proportion p is found to be (0.62, 0.68).
\(p' - Z_{\alpha }\sqrt{\frac{p'q'}{n} } = 0.62\\\\p' + Z_{\alpha }\sqrt{\frac{p'q'}{n} } = 0.68\)
Adding the two equations,
2p' = 1.3
p' = 0.65
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The radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 60.1% of their carbon-14. How old were the bones at the time they were discovered?
please help me with this problem.....
Answer: To solve the problem, we can use the formula for exponential decay:
N(t) = N0 * (1/2)^(t/T)
where:
N(t) is the amount of the radioactive element at time t
N0 is the initial amount of the radioactive element
t is the time that has elapsed
T is the half-life of the radioactive element
Let's assume that the initial amount of carbon-14 in the bones was N0. After the bones were discovered, they had lost 60.1% of their carbon-14, which means that only 39.9% of the original carbon-14 remained. Therefore, we can write:
N(t) = 0.399 * N0
We want to find the time t that has elapsed since the mastodon died. We can rearrange the formula for exponential decay to solve for t:
t = T * log( N(t) / N0 ) / log(1/2)
Substituting the given values, we get:
t = 5750 * log( 0.399 ) / log(1/2)
Using a calculator, we find that t is approximately 16060 years. Therefore, the bones were approximately 16060 years old at the time they were discovered.
Step-by-step explanation: