Answer:
it will be 20$ if im wrong you can correct me
A public opinion poll in Ohio wants to determine whether reg-istered voters in the state approve of a measure to ban smoking in all public areas. They randomly select 50 voters from each county in the state and ask whether they approve or disapprove of the measure. This is an example of - A. SIMPLE RANDOM SAMPLE - 8. STRATIFIED RANDOM SAMPLE At a party there are 30 students over age 21 and 20 students under age 21 . You randomly select 3 of those over 21 and 2 of those under 21 to interview about attitudes toward alcohol. This is an example of - A. STRATIFIED RANDOM SAMPLE - B. SIMPLE RANDOM SAMPLE The Ministry of Health in the Canadian Province of Ontario conducted the Ontario Health Survey by conducting interviews with 30,000 randomly selected men and 35,000 randomly selected women who reside in Ontario. This is an example of - ASIMPLE RANDOM SAMPLE - B. STRATIFIED RANDOM SAMPLE
The first example is a stratified random sample, the second example is a simple random sample, and the third example is a simple random sample.
In the first scenario, where registered voters in Ohio are selected from each county, the sampling method used is a stratified random sample. This method involves dividing the population (registered voters) into distinct groups (counties) and randomly selecting a sample from each group. The purpose is to ensure representation from each county and to account for potential variations in opinions across different regions. By using a stratified random sample, the poll aims to obtain a more accurate and representative picture of the overall approval of the smoking ban measure in the state.
In the second scenario, where students at a party are randomly selected to be interviewed about their attitudes toward alcohol, the sampling method used is a simple random sample. This method involves randomly selecting individuals from the entire population without any specific grouping or stratification. The purpose is to ensure that each student has an equal chance of being selected for the interview, regardless of their age group. By using a simple random sample, the party organizers aim to gather unbiased opinions from both students over and under the legal drinking age.
In the third scenario, where men and women residing in Ontario are randomly selected for interviews in the Ontario Health Survey, the sampling method used is a simple random sample. This method involves randomly selecting individuals from the entire population without any specific grouping or stratification. The purpose is to ensure equal representation of men and women in the survey and to gather a diverse range of health-related data. By using a simple random sample, the Ministry of Health aims to obtain unbiased information about the health status and behaviors of both men and women in the province.
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The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two numbers? Use the table to guess and check.
Numbers
x
y
x + y = 85
y = 2 x + 4
19 and 65
25 and 60
27 and 58
32 and 53
Answer:c
Step-by-step explanation: took the test
I need help with the problems in the picture added.
\(\\ \bull\tt\longmapsto \sqrt{7}+\sqrt{7}=2\sqrt{7}\)
\(\\ \bull\tt\longmapsto 6\sqrt{7}-11\sqrt{7}+2\sqrt{7}=-3\sqrt{7}\)
\(\\ \bull\tt\longmapsto \sqrt{96}+6\sqrt{72}=4\sqrt{6}+6\sqrt{72}\)
\(\\ \bull\tt\longmapsto \sqrt{B}-5\sqrt{B}=-4\sqrt{B}\)
\(\\ \bull\tt\longmapsto -2\sqrt{32}-7\sqrt{8}=-4\sqrt{8}-7\sqrt{8}=-11\sqrt{8}\)
Solve for x
−4(2x+5)+5x−1= −48
Answer:
x=9
Step-by-step explanation:
−4(2x+5)+5x−1= −48
-8x-20+5x-1=-48
-3x-21=-48
-3x=-27
x=-27/-3
x=9
Which of the following rational functions is graphed below?
Hey Mate!!
Your answer will be below.
Step-by-step explanation:
The answer is C. Because, There's vertical asymptotes at 1 and -1. Vertical asymptotes are present where the x on the denominator is equal to 0. So, Both the values are 1 and -1 set are equal to the 0 in the denominator, So, They're both horizontal asymptotes. Good Luck!
can someone please explain how they got this final answer.
how did they get the 3? and why is the 18 gone! :( i am so confused
The rationalization of the given surd gives the answer as √2/3
What is rationalization?Rationalization is a process that finds application in elementary algebra, where it is used to eliminate the irrational number in the denominator.
Given here: The surd 2/√18
Thus rationalizing we get as follows:
2/√18
=2×√18/√18×√18 ( multiplying both numerator and denominator by √18)
=2√18/√18² ( since 18²ˣ¹/₂=18)
=2√18/18
=2√3²×2 / 18 ( ∵ 18=3²×2)
=2×3×√2/18
=(6/18) × √2
=(1/3)×√2
=√2/3
Hence, The rationalization of the given surd gives the answer as √2/3
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The divorce rate for women who marry over the age of 20 years is 36%. The divorce rate for women who were married when they were 18 years or younger is ____________.
The divorce rate for women who were married when they were 18 years or younger is higher than for those who marry over the age of 20 years. According to the latest research and studies conducted by various organizations, the divorce rate for women who marry at the age of 18 or younger is around 48%.
There are several reasons for the higher divorce rate among women who marry at a young age. One major factor is lack of maturity and life experience. Marriage requires a certain level of maturity and emotional stability to navigate the ups and downs that inevitably come with any long-term commitment. Many young women who marry before the age of 20 may not have fully developed these qualities, leading to conflict and dissatisfaction in the relationship.
Another factor is societal pressure and expectations. Women who marry young are often expected to take on traditional roles such as homemaker and mother, which can be overwhelming and stressful. This can lead to feelings of resentment and frustration, which can ultimately lead to divorce.
It's worth noting that there are exceptions to every rule, and there are certainly couples who marry young and have long, happy marriages. However, statistics show that the divorce rate is higher among those who marry at a young age.
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Jonah and his brother ran a race. Jonah reached the finish line in 68.49 seconds and his brother reached the finish line 4.66 seconds later. How long did it take Jonah's brother to run the race?
Answer:
73.15 seconds or one min and 3.15 seconds
Step-by-step explanation:
x = amount of time it took Jonah to run the race
68.49 + 4.66 = x
x = 73.15 seconds
Please help me answer this
Answer: y = x - 5
Step-by-step explanation: hope this helps! :)
find the general solution of the system bold x prime(t)equalsax(t) for the given matrix a.
The general solution of the system x'(t) = Ax(t), where A is the given matrix, can be found by solving the system of linear differential equations associated with it.
To find the general solution, we need to solve the system of linear differential equations x'(t) = Ax(t), where x(t) is a vector-valued function and A is the given matrix.
The solution involves finding the eigenvalues and eigenvectors of the matrix A. The general solution will have the form x(t) = c₁v₁e^(λ₁t) + c₂v₂e^(λ₂t) + ... + cₙvₙe^(λₙt), where c₁, c₂, ..., cₙ are constants, v₁, v₂, ..., vₙ are eigenvectors, and λ₁, λ₂, ..., λₙ are eigenvalues of A.
This general solution represents a linear combination of exponential functions, where each term corresponds to an eigenvalue-eigenvector pair. The specific values of the constants are determined by initial conditions or boundary conditions provided in the problem.
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What is the value of the expression below? (4/5+3/5)+3.5x5
Answer:
18.9
Step-by-step explanation:
Start with parentheses.
4/5 + 3/5 = 7/5
Simplify 7/5, 7/5 = 1 2/5
Next numbers.
3.5 x 5 = 17.5
Add.
17.5 + 1 2/5 = 18.9
what is the rational number halfway between 3/5 and 2/3
Answer:
11
Step-by-step explanation:
Now, the numbers are 6⁄10 and 8⁄12, so the required rational number can be in between these numbers. The numerator and denominator of the required number should be between the given number, i.e., numerator can be 7 and denominator can be 11. Hence, the rational between 3⁄5 and 2⁄3 is 7⁄11.
Problem #1 (p21#22): Do the lines hx,y,zi = ht + 4, 4t + 5,t − 2i
and hx,y,zi = h2s + 3,s + 1, 2s − 3i intersect?
The lines given by hx,y,zi = ht + 4, 4t + 5, t − 2i and hx,y,zi = h2s + 3, s + 1, 2s − 3i do not intersect.
We can determine whether two lines intersect by setting their equations equal to each other and solving for the values of x, y, and z. Setting the given equations equal to each other, we have:
ht + 4 = h2s + 3
4t + 5 = s + 1
t − 2 = 2s − 3
From the second equation, we have s = 4t - 4. Substituting this into the third equation, we get t = 3. Then, using t = 3 in the first equation, we get h = -1/3. Substituting these values into the second equation, we get s = 8. However, using these values in the first equation leads to a contradiction: -1/3 ≠ 19/3. Therefore, the lines do not intersect.
Therefore, the lines given by hx,y,zi = ht + 4, 4t + 5, t − 2i and hx,y,zi = h2s + 3, s + 1, 2s − 3i do not intersect.
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Elmer's black lab eats two and a half boxes of dog treats per month. how many boxes of treats will a dog eat at 4 months ?
We have
1 month --- 2 1/2 boxes
4 months --- x boxes
in order to find the number of boxes we will use crossed multiplication
\(\frac{4}{1}\cdot(2\frac{1}{2})=10\)ANSWER
4 months ---- 10 boxes
problem 2: chebyshev v.s central limit theorem a fair die is tossed 100 times 1. use the chebyshev bound developed to prove the law of large numbers to bound the probability that the total number of dots is between 300 and 400. 2. use the central limit theorem to bound the probability th
The probability will be 0.88, hat the total number of dots is between 300 and 400.
What is probability?
By simply dividing the favorable number of possibilities by the entire number of possible outcomes, the probability of an occurrence can be determined using the probability formula. Because the favorable number of outcomes can never exceed the entire number of outcomes, the chance of an event occurring might range from 0 to 1.
mean number of dok = 3.5 and
st. deianon = 1.7078
so manor 100 toss = 2,5%
st duiation is = 1.7078 x (100)\(.^{1/2}\)
=17.078
R = 2.92 St. deviation away from mian
probability that total no lie between 300 and 400.
= 1 - \(\frac{1}{k^{2} }\)
=0,88
Hence, The probability will be 0.88.
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the ratio of men to women in a certain factory is 3 to 4. there are 216 men.
how many worker are there?
Answer:
288
Step-by-step explanation:
3/4=216/x
then solve
864=3x
x=288
information yes no the maximum difference between group 1 and group 2 that is likely if there is no true difference between the two groups the variances of group 1 and group 2 the sizes of group 1 and group 2 the difference between the means of group 1 and group 2
The maximum difference between Group 1 and Group 2, in the absence of a true difference, depends on the variances, sizes, and mean difference between the groups. Larger variances and sample sizes increase the potential difference, while smaller variances and sample sizes decrease it. A larger mean difference between the groups will result in a larger maximum difference.
The maximum difference between Group 1 and Group 2 that can occur when there is no true difference between the two groups is influenced by several factors. Firstly, the variances of Group 1 and Group 2 play a crucial role.
If the variances are large, it indicates a greater spread of data within each group, which can result in larger differences between individual data points. On the other hand, if the variances are small, the data points tend to be closer together, resulting in smaller differences between them.
Secondly, the sizes of Group 1 and Group 2 also impact the maximum difference between the two groups. When the sample sizes are small, there is a higher chance of observing larger differences by chance alone. Conversely, larger sample sizes tend to provide more reliable estimates and reduce the likelihood of large differences occurring by random variation.
Finally, the difference between the means of Group 1 and Group 2 affects the maximum difference between the groups. A larger difference between the means of the groups will naturally result in a larger maximum difference between individual data points.
In conclusion, the maximum difference between Group 1 and Group 2 that is likely to occur in the absence of a true difference between the groups depends on the variances, sizes, and the difference between their means. By considering these factors, researchers can better understand the expected range of differences that may arise due to random variation and make informed interpretations of their data.
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a snow cone stand sold 250 snow cones at an event that had 600 people. how many snow could would be expected sold at a event that would have 1,800 people
Answer:
b
Step-by-step explanation:
Answer:
If 250 per 600
Step-by-step explanation:
600 x 3 is 1800, so 250 x 3 is 750.
So you're answer would be 750
Construct the graph of the direct proportion y=kx for each value of k k=3x
the answer is 3x²
Step-by-step explanation:
we know that k = 3x
when we look at the actual equasion we can se that y = kx, meaning we have to multiply x by 3x which would give us 3x²
Answer: the answer is 3x^2 three x to the power of 2
In 1626, the Dutch bought Manhattan Island, now part of New York City, for $24.75 worth of merchandise. Suppose that, instead, $24.75 had been invested in an account that paid 3.75% interest each year. Find the balance in 2020
Answer:
The balance in 2020 is $47,810,662.65576
Step-by-step explanation:
In order to find the balance in 2020, first we would have to calculate the number of year as follows:
number of years, t=2020-1626
number of years, t=394
Therefore, to calculate the balance in 2020, we would have to use the following formula:
f(t)= 24(1.0375)∧394
f(t)=24*1,992,110.94399
f(t)=$47,810,662.65576
The balance in 2020 is $47,810,662.65576
A company has a maximum advertising budget of $100,000 for the year. It will be using two different platforms of advertising: online ads and billboards. Each online ad purchased will cost $15,000 for the year, and each billboard will cost $10,000 for the year. The company will not spend more than 60% of its overall budget on one of the platforms.
Given that x represents the number of online ads purchased and y represents the number of billboards purchased, create a system of inequalities modeling the scenario. Select all that apply.
15,000x+10,000y ≤ 100,000
10,000x+15,000y ≤ 100,000
0 ≤ x ≤ 4
0 ≤ x ≤ 6
0 ≤ y ≤ 4
0 ≤ y ≤ 6
The inequality for expenditure on ad for both online and billboards will be: 0 ≤ x ≤ 4 and 0 ≤ y ≤ 6.
Firstly we need to know the permissible amount for spending. Based on this, the expenditure will be: 60% × 100,000
expenditure = $60,000
Now, expenditure on online ad = 15000x
Expenditure on billboards = 10000y
The complete inequality will be -
15,000x+10,000y ≤ 60%×100,000
15,000x+10,000y ≤ 60,000
So, the value of x -
x = 60,000/15000
x = 4
The value of y -
y = 60,000/10,000
y = 6
Thus, inequality will be -
0 ≤ x ≤ 4 and 0 ≤ y ≤ 6.
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Joanne and Richard volunteer at a hospital. Joanne volunteers 4 hours more per week than
Richard does. In a given week, they do not volunteer for more than a combined total of 16 hours.
If æ is the number of hours that Richard volunteers, which inequality best models this situation?
The correct inequality that represents the given scenario is, x + 4 ≤ 16. Hence option A is true.
Used the concept of inequality,
A relation by which we can compare two or more mathematical expressions is called an inequality.
Given that,
Joanne volunteers 4 hours more per week than Richard does.
In a given week, they do not volunteer for more than a combined total of 16 hours.
Let x be the number of hours that Richard volunteers.
Then the correct inequality is,
x + 4 ≤ 16
Therefore, option A is true.,
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you know there are 2 boys and an unknown number of girls in a nursery at a hospital. then a woman gives birth a baby, but you dont know its gender, and it is placed in the nursery. then a nurse comes in a picks up a baby and it is a boy. given that the nurse picks up a boy, what is the probability that the woman gave birth to a boy?
The probability that the woman gave birth to a boy, given that the nurse picked up a boy, is 1/3.
There are 2 boys initially and an unknown number of girls in the nursery, so there were a total of 2 + x babies in the nursery, where x is the number of girls.
Since we know that one of those babies is a boy, there are a total of 2 + x - 1 = 1 + x babies left in the nursery.
So the probability of the nurse picking up a boy, given that the woman gave birth to a boy, is 1/(1+x).
P(boy | picked up boy) = P(picked up boy | boy) * P(boy) / P(picked up boy)
= (1/(1+x)) * 1/2 / (1/(1+x) * 1/2 + x/(1+x) * 1/2)
= 1/3
So the probability that the woman gave birth to a boy, given that the nurse picked up a boy, is 1/3.
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how do you check your result after factoring a polynomial?
The original polynomial, \(x^2 + 7x + 12\), it can be seen that the two are the same, thus confirming that the polynomial was correctly factored.
To check the result after factoring a polynomial, one can use the FOIL method to ensure that the factored polynomial is equivalent to the original polynomial. The FOIL method stands for First, Outer, Inner, Last, and is used to multiply two binomials. To check the result, one would use the FOIL method to multiply the factored polynomial, and compare the result to the original polynomial. For example, let’s consider the polynomial\(x^2+7x+12\). After factoring, this can be written as (x+4)(x+3). To check the result, one would multiply the two binomials together, (x+4)\((x+3) = x^2 + 3x + 4x + 12\). Comparing this to the original polynomial, \(x^2 + 7x + 12\), it can be seen that the two are the same, thus confirming that the polynomial was correctly factored.
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A typical chocolate chip cookie has a diameter of 3. 5 inches. In the miniature town at the Behringer Crawford Museum that we saw in the video, what would be the diameter of a chocolate chip cookie from Faragher’s bakery? Show all your work.
If the miniature town is built to a 1:10 scale, the diameter of a chocolate chip cookie from Faragher's bakery would be 0.35 inches in the miniature town.
In the miniature town at the Behringer Crawford Museum, the diameter of a chocolate chip cookie from Faragher's bakery would depend on the scale of the miniature town. Since the video doesn't provide the specific scale, we'll have to make an assumption.
Let's say the miniature town is built to a 1:10 scale, meaning that objects in the town are 1/10th the size of their real-life counterparts. If a typical chocolate chip cookie has a diameter of 3.5 inches, we can calculate the diameter of the miniature cookie by dividing 3.5 inches by 10:
3.5 inches / 10 = 0.35 inches
Therefore, if the miniature town is built to a 1:10 scale, the diameter of a chocolate chip cookie from Faragher's bakery would be 0.35 inches in the miniature town.
However, it's important to note that without knowing the specific scale of the miniature town, we can only make assumptions based on the given information. The actual diameter of the chocolate chip cookie in the miniature town may vary depending on the scale chosen for the model.
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57. Write as a single integral in the form y b a fsxd dx: y 2 22 fsxd dx 1 y 5 2 fsxd dx 2 y 21 22 fsxd dx
The single integral in the form y b a fs(x) dx is:
∫ y=1 to 22 fs(x) dx - ∫ y=1 to 1 fs(x) dx - ∫ y=2 to 5 fs(x) dx - ∫ y=1 to 21 fs(x) dx
To write the given expressions as a single integral in the form y b a fs(x) dx, let's break it down step by step.
1) y = 2 to 22: ∫ fs(x) dx
2) y = 1 to 5: ∫ fs(x) dx
3) y = 21 to 22: ∫ fs(x) dx
Now, to combine these integrals into a single expression, we need to find a common interval that encompasses all three given intervals.
The smallest common interval that covers all three intervals is from 1 to 22.
Therefore, we can rewrite the expressions as:
∫ y=2 to 22 fs(x) dx = ∫ y=1 to 22 fs(x) dx - ∫ y=1 to 1 fs(x) dx
∫ y=5 to 2 fs(x) dx = -∫ y=2 to 5 fs(x) dx
∫ y=21 to 22 fs(x) dx = ∫ y=1 to 22 fs(x) dx - ∫ y=1 to 21 fs(x) dx
Combining these expressions, we get:
∫ y=2 to 22 fs(x) dx - ∫ y=5 to 2 fs(x) dx + ∫ y=21 to 22 fs(x) dx
= (∫ y=1 to 22 fs(x) dx - ∫ y=1 to 1 fs(x) dx) - (-∫ y=2 to 5 fs(x) dx) + (∫ y=1 to 22 fs(x) dx - ∫ y=1 to 21 fs(x) dx)
= 2∫ y=1 to 22 fs(x) dx - ∫ y=1 to 1 fs(x) dx - ∫ y=2 to 5 fs(x) dx - ∫ y=1 to 21 fs(x) dx
Therefore, y b a fs(x) dx, the single integral is:
∫ y=1 to 22 fs(x) dx - ∫ y=1 to 1 fs(x) dx - ∫ y=2 to 5 fs(x) dx - ∫ y=1 to 21 fs(x) dx
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Construct x such that a/x = x/b
geometric mean lesson 20 level 1007 ! construct x such that x=\(x=\sqrt{rs\)
3 ) construct x such that x=2\(2\sq\sqrt{rs\)\(2\sqrt{rs[/\(2\sqrt{ rs\)
To construct x such that a/x = x/b, we can use the concept of geometric mean. The geometric mean of two numbers a and b is the square root of their product.
In this case, we are given that x = 2. Let's substitute x = 2 into the equation:
a/2 = 2/b
To find x, we need to solve for a and b. Rearranging the equation, we have:
a = (2/b) * 2
a = 4/b
Now, let's substitute a = 4/b into the original equation:
(4/b)/2 = 2/b
Simplifying, we get:
2/b = 2/b
This equation is true for any non-zero value of b. Therefore, we can conclude that there are infinitely many solutions for x such that x = 2 in the given equation.
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The set of numbers whose decimal representations are neither.
The set of numbers whose decimal representations are neither repeating nor terminating is known as the set of irrational numbers.
Irrational numbers are numbers that cannot be expressed as fractions and have non-repeating and non-terminating decimal representations. Examples of irrational numbers include √2, π (pi), and e (Euler's number). These numbers are infinite and non-repeating, meaning their decimal representation goes on forever without following a specific pattern. The proof that √2 is irrational was first demonstrated by the ancient Greeks, and the irrationality of π and e was proven much later in history. Irrational numbers play a significant role in mathematics and are essential for understanding concepts like limits, calculus, and geometry.
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What is the mathematical term for the set of numbers whose decimal representations are neither terminating (finite decimal) nor repeating (infinite periodic decimal)?
Which angle is an acute angle?
Answer:
<CPB
Step-by-step explanation:
Because <APE= right angle
<APC= Obtuse angle
<CPE= Obtuse Angle.
Also, <CPB because its the only angle below 90 degrees and an acute angle must be below 90 degrees.
...............................
Answer:
\(2 \sqrt{10} \)Option C is the correct option.
Step-by-step explanation:
√ 8 • √ 5
Calculate the product
\( = \sqrt{40} \)
Simplify the radical expression
\( = \sqrt{2 \times 2 \times 10} \)
\( = 2 \sqrt{10} \)
Hope this helps...
Best regards!!