Answer:
K
Step-by-step explanation:
Since absolute values are always zero or positive, there are no solutions.
The solution set to the inequality |x - 5| < -1 using the concept of absolute value of a number is: Graph K
How to solve number line graphs?A number line is a representation of real numbers in the form of a graded straight line.
An absolute value of a real number x is defined as the non-negative value of x without regard to its sign. For example, the absolute value of 5 is 5, and the absolute value of −5 is also 5.
We are given the expression:
|x - 5| < -1
Using the absolute value concept:
Rule is when ∣y∣ < a
⇒−a < y < a
Now when ∣x − 5∣ < −1
But always ∣y∣ is greater than zero. a positive number and ∣x−5∣ is less than −1.
The solution does not exist.
Solution set is empty.
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David is going to buy a cooker.
The cooker has a price of £320.
David pays a deposit of 15% of the price of the cooker.
How much money does David pay as a deposit?
Answer:
the original price of the cooker is £320 and David has been a deposit of 15% so find 15% of the original price and the deposit is £48
The amount of money that David paid as a deposit will be £48.
What is the percentage?The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.
David is going to buy a cooker. The cooker has a price of £320. David pays a deposit of 15% of the price of the cooker.
The amount of the deposit will be
Deposit amount = 15% of £320
Deposit amount = 0.15 x £320
Deposit amount = £48
The amount of money that David paid as a deposit will be £48.
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PLEASE HELP ASAP!!!!!!!!!!!!
Ari mixed 2 1/4
cups of red grapes with 1/2 cups of green grapes. He then divided the grapes into bags with 3/4 cup of mixed grapes in each. How many bags of grapes will Ari have?
Answer:
3
Step-by-step explanation:
A high schools basketball team won 36 percent of the games that played last season . The team won exactly 9 games last season . What the total number of games that the game
Which value of x is in the domain of f(x)=√x - 7?
A. x = -3
B. x = 6
C. x = 0
D. x=8
Answer is the following
C) x = 0
X/3+5=10 solve for x only type the numerical answer below
Answer:
x=15
Step-by-step explanation:
x/3=10-5
x/3=5
x=5*3
x=15
Answer:
15
Step-by-step explanation:
x/3+5=10
(x/3)(3)=5(3)
x=15
Write an equation of the line that passes through the point (2, -3) and has a
slope of -1.
Answer:
Y = -1x - 1
Step-by-step explanation:
I used desmos graphing calculator and tried until I got a line that worked. It passes through (2, -3) and has a slope of -1
Hope this helped :)
Find the slope of the line that passes through (2, 18) and (9, 9).
Answer:
m=-9/7
Step-by-step explanation:
An experimenter would like to construct a 99% confidence interval with a width at most 0. 5 for the average resistance of a segment of copper cable of a certain length. If the experimenter knows that the standard deviation of such resistances is 1. 55. How big a sample should the experimenter take from the population? what happens if the standard deviation and the width of the confidence interval are both doubled?.
A big sample that should the experimenter take from the population is 256 and if the standard deviation and the width of the confidence interval are both doubled then the sample is also 256.
In the given question,
The confidence level = 99%
Given width = 0.5
Standard deviation of resistance(\sigma)= 1.55
We have to find a big sample that should the experimenter take from the population and what happens if the standard deviation and the width of the confidence interval are both doubled.
The formula to find the a big sample that should the experimenter take from the population is
Margin of error(ME) \(=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\)
So n \(=(z_{\alpha /2}\frac{\sigma}{\text{ME}})^2\)
where n=sample size
We firstly find the value of ME and \(z_{\alpha /2}\).
Firstly finding the value of ME.
ME=Width/2
ME=0.5/2
ME=0.25
Now finding the value of \(z_{\alpha /2}\).
Te given interval is 99%=99/100=0.99
The value of \(\alpha\) =1−0.99
The value of \(\alpha\) =0.01
Then the value of \(\alpha /2\) = 0.01/2 = 0.005
From the standard table of z
\(z_{0.005}\) =2.58
Now putting in the value in formula of sample size.
n=\((2.58\times\frac{1.55}{0.25})^2\)
Simplifying
n=(3.999/0.25)^2
n=(15.996)^2
n=255.87
n≈256
Hence, the sample that the experimenter take from the population is 256.
Now we have to find the sample size if the standard deviation and the width of the confidence interval are both doubled.
The new values,
Standard deviation of resistance(\(\sigma\))= 2×1.55
Standard deviation of resistance(\(\sigma\))= 3.1
width = 2×0.5
width = 1
Now the value of ME.
ME=1/2
ME=0.5
The z value is remain same.
Now putting in the value in formula of sample size.
n=\((2.58\times\frac{3.1}{0.5})^2\)
Simplifying
n=(7.998/0.5\()^2\)
n=(15.996\()^2\)
n=255.87
n≈256
Hence, if the standard deviation and the width of the confidence interval are both doubled then the sample size is 256.
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18) A TV screen has a length of 15 inches.
The diagonal of the TV is 25 inches. What
is the width of the TV?
A) 400 inches
B) 40 inches
C) 20 inches D) 29.2 inches
Answer: 20 inches
Step-by-step explanation:
From the question, a television screen has a length of 15 inches while the diagonal of the TV is 25 inches. To calculate the width, we will use the hypoteneous rule.
Hypotenuse² = length² + width²
25² = 15² + width²
width² = 25² - 15²
width² = 625 - 225
width² = 400
width = ✓400
width = 20
The width of the TV is 20 inches.
300000 In standard form
300000 in standard form is 3 x 10^5.
To convert a number to standard form, you need to express it as a number between 1 and 10 multiplied by a power of 10.
Here are the steps to convert a number to standard form:
1.Count the number of digits in the original number.
2.If the original number is greater than or equal to 10, then move the decimal point to the left until there is only one non-zero digit to the left of the decimal point. Count the number of places you moved the decimal point. This will be the power of 10 in the standard form.
3.If the original number is less than 1, then move the decimal point to the right until there is only one non-zero digit to the left of the decimal point. Count the number of places you moved the decimal point. This will be a negative power of 10 in the standard form.
4.Write the original number with the decimal point in its new position, and multiply it by 10 raised to the power determined in step 2 or step 3.
Answer:
standard form is used when numbers are very large or very small.
300000=3×10000
=3×104
this is now written in standard form
will the sampling distribution of x always be approximately normally distributed? Explain. Choose the correct answer below 0 ?. Yes, because the Central Limit Theorem states that the sampling distribution of x is always approximately normally distributed O B. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough O C. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the population being sampled is normally distributed O D No, because the Central Limit Theorem states that the sampling d bution of x is approximately no aly distribui d only i the sa le sae is mere than 5% of the population.
B. No, because the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough.
The Central Limit Theorem (CLT) is a fundamental concept in statistics that states that as the sample size increases, the sampling distribution of the sample means will approach a normal distribution. However, this is only true if certain conditions are met, one of which is having a large enough sample size.
The CLT states that the sampling distribution of x will be approximately normally distributed if the sample size is large enough (usually greater than 30). If the sample size is small, the sampling distribution may not be normally distributed. In such cases, other statistical techniques like the t-distribution should be used.
Furthermore, the CLT assumes that the population being sampled is not necessarily normally distributed, but it does require that the population has a finite variance. This means that even if the population is not normally distributed, the sampling distribution of x will still be approximately normal if the sample size is large enough.
In conclusion, the answer is B, as the Central Limit Theorem states that the sampling distribution of x is approximately normally distributed only if the sample size is large enough.
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Multiply.simplify your answer and write it as a mixed number 5•7/8
Answer:
it should be 4 3/8 but sorry if it's wrong <3
When are supplementary angles congruent?
always
if they are right angles
if they are acute angles
never
Answer:
acute angle
Step-by-step explanation:
as it right angle have 90•
and acute angles are 180•.
how many are minivans
Answer:
you have to be specific, i don´t understand the question
please rewrite the question
Answer
if your asking for the cost it's around $32,134?
Express the ratio 4:7 in the form n:1
The ratio 4:7 in the form n:1 is \(\frac{4}{7} : 1\) .
What is unit fraction?
A unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n. Examples are 1/1, 1/2, 1/3, 1/4, 1/5, etc.
According to the question
The ratio 4:7 in the form n:1
i.e
\(\frac{4}{7} = \frac{n}{1}\)
n = \(\frac{4}{7}\)
Now, the unit fraction
The ratio is
= \(\frac{4}{7} : 1\)
Hence, the ratio 4:7 in the form n:1 is \(\frac{4}{7} : 1\) .
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What percent of 32 is 10
Answer:
31.25
Step-by-step explanation:
Answer:
31.25%
Step-by-step explanation:
We can write this as a fraction:
10/32
Now you divide it to get a decimal:
10 ÷ 32 = 0.3125
0.3125 = 31.25%
Hope this helps!
7/8 of a can of drink is water, the rest is syrup. What is the ratio of water to syrup?
Answer:
7 : 1.
Step-by-step explanation:
1 - 7/8 = 1/8 is syrup.
So, water to syrup
= 7/8 : 1/8
= 7 :1.
The ratio of water to syrup is 7:1
What is a ratio?The quantitative relation between two amounts showing the number of times one value contains or is contained within the other. for example-"the ratio of computers to students is now 2 to 1"
Given here, 7/8 of a can of drink is water, the rest is syrup thus the fraction for syrup is 1/8 of the can. Therefore the ratio of water and syrup is
7/8:1/8=7:1
Hence, The ratio of water to syrup is 7:1
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What can be solutions for, 3(x-4)(2x-3)=0?
What
method of variable calculation is the best, Qualitative or
Quantitative? (Be careful, this could be a trick question).
Discussion 1 will require three (3) substantive
contributions.
The best method of variable calculation, whether qualitative or quantitative, depends on the specific context and the type of information being analyzed.
It is not appropriate to definitively label one method as universally better than the other as they serve different purposes and have their own strengths and limitations.
Qualitative methods involve subjective analysis and interpretation of non-numerical data, such as observations, interviews, or surveys. They are valuable when exploring complex phenomena, understanding human behavior, or capturing nuanced information that cannot be easily quantified. Qualitative methods provide rich, in-depth insights and can uncover underlying motivations, attitudes, and perceptions.
Quantitative methods, on the other hand, involve the measurement and analysis of numerical data using statistical techniques. They provide objective and measurable results, allowing for precise comparisons and generalizations. Quantitative methods are particularly useful for testing hypotheses, establishing trends, and making predictions based on large-scale data sets.
Both qualitative and quantitative methods have their merits and should be employed based on the research question, available resources, and the nature of the data. A comprehensive approach that integrates both methods can often provide a more comprehensive and robust understanding of the subject matter.
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Which is a central idea of the article?
A. Congress passed the Fair Labor Standards Act to protect young workers.
B. Hundreds of thousands of kids work long hours under dangerous conditions on U.S. farms.
C. Reyes has been working on farms in Michigan since he was 9 years old.
D. Worldwide, about 152 million kids ages 5 to 17 are child laborers.
Answer:
a is the right answer Congress passed the fair labor standards act to protect young workers
Simplify the following expression.
(38x+61y) - (3x- 11y)
Answer:
35x+72y
Step-by-step explanation:
\((38x+61y)-(3x-11y)\\38x+61y-3x+11y\\35x+72y\\\)
Brainliest if it helped you!
Answer:
please see the picture above
Consider the following data set:
2 , − 3 , − 3 , 1 , 8 , 12 , 14 , 2
Find the lower quartile.
Answer:
-3, -3, 1, 2, | 2, 8, 12, 14
Lower quartile is negative 1
Because the middle number is the median because there is an odd set of numbers.
To find the quartile you have to arrange the numbers from lowest to highest.
When you find middle number you have to find the half of the lower half of the middle, which you will solve the lower quartile. Since there are even numbers you add the two middle numbers and divide it by 2. And you'll get the answer hope that helped
In a week, 13 hens laid 65 eggs. What is the unit rate for eggs per hen?
Answer:
5 eggs per hen
Step-by-step explanation:
Divide 65 and 13
Have a wonderful Day!
a family is heading due east on a road that passes a waterfall. at a given time the bearing to the waterfall is s 71 e and after they travel 8 miles further, the bearing is s35e. what is the closest that the family will come to the waterfall while on the road
The closest that the family will come to the waterfall while on the road is 5.6 miles.
To solve this problem, we can use the law of cosines. Let x be the distance that the family travels from the point where the bearing is S71E to the point where the bearing is S35E, and let d be the distance from the family's starting point to the waterfall.
We have:
cos(71) = d/x
cos(35) = d/(x+8)
Multiplying both sides of the first equation by x and both sides of the second equation by (x+8), we get:
d = x cos(71)
d = (x+8) cos(35)
Setting the right-hand sides of these equations equal to each other and solving for x, we get:
x cos(71) = (x+8) cos(35)
x = 8 cos(35)/(cos(71)-cos(35))
Plugging this into the first equation above, we get:
d = x cos(71) = 8 cos(35) cos(71)/(cos(71)-cos(35))
This gives us the distance from the family's starting point to the waterfall. To find the closest distance that the family will come to the waterfall while on the road, we need to subtract the radius of the waterfall from this distance. Let's assume that the radius of the waterfall is 50 feet.
The closest distance that the family will come to the waterfall while on the road is:
d - 50 = 8 cos(35) cos(71)/(cos(71)-cos(35)) - 50
This is approximately equal to 5.6 miles. Therefore, the closest that the family will come to the waterfall while on the road is 5.6 miles.
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Explain why all of these statements are false: (a) The complete solution to Ax = b is any linear combination of Xp and Xn. (b) The system Ax- b has at most one particular solution. (c) If A is invertible, there is no solution Xn in the nullspace. 6. Let 4 3 2 [6 UJ Use Gauss-Jordan elimination to reduce the augmented matrices U 0 and U c] to R 0 and R D. Solve Rx -0 and Rxd. Check your work by plugging your values in the equations Ux = 0 and Ux = c.
We check our work by plugging our values for Xn and Xp into the equations Ux = 0 and Ux = c to verify that they are indeed solutions to the original system of equations.
(a) The statement "The complete solution to Ax = b is any linear combination of Xp and Xn" is false because the complete solution to Ax = b is the sum of the particular solution Xp and the nullspace solution Xn. It is not a linear combination of the two.
(b) The statement "The system Ax- b has at most one particular solution" is false because a system of linear equations can have multiple particular solutions. However, it will have at most one solution in the case where the system is consistent and the rank of the matrix A is equal to the rank of the augmented matrix [A | b].
(c) The statement "If A is invertible, there is no solution Xn in the nullspace" is false because the nullspace of a matrix is always non-empty and contains the zero vector, even if the matrix is invertible. However, the nullspace of an invertible matrix will only contain the zero vector.
To solve the system of equations represented by the augmented matrices U 0 and U c, we use Gauss-Jordan elimination to reduce them to row echelon form. This involves performing elementary row operations such as adding multiples of one row to another and multiplying a row by a scalar. The end result should be a matrix R in row echelon form.
Next, we solve the system Rx = 0 by setting the non-pivotal variables to be free and expressing the pivotal variables in terms of them. This will give us the nullspace solution Xn. Then, we solve Rx = d using back-substitution to obtain the particular solution Xp.
we check our work by plugging our values for Xn and Xp into the equations Ux = 0 and Ux = c to verify that they are indeed solutions to the original system of equations.
(a) The statement "The complete solution to Ax = b is any linear combination of Xp and Xn" is false because the complete solution is given by X = Xp + Xn, where Xp is a particular solution to Ax = b and Xn is a solution to the homogeneous system Ax = 0. It is not any linear combination of Xp and Xn, but rather the sum of a specific Xp and all possible solutions Xn.
(b) The statement "The system Ax - b has at most one particular solution" is false because it can have either one unique solution, infinitely many solutions, or no solution at all. The number of solutions depends on the properties of the matrix A and the vector b.
(c) The statement "If A is invertible, there is no solution Xn in the nullspace" is false because if A is invertible, the nullspace contains only the trivial solution (all zeros). In this case, the nullspace has one solution (Xn = 0), not zero solutions.
Regarding the Gauss-Jordan elimination problem:
1. Write down the augmented matrices U|0 and U|c.
2. Apply Gauss-Jordan elimination to reduce both matrices to row echelon form R|0 and R|D.
3. Solve the systems Rx = 0 and Rx = D using back substitution.
4. Check your work by plugging your solutions back into the equations Ux = 0 and Ux = c.
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PLEASE HELP!!! Pleaseee!
Answer:
a
Step-by-step explanation:
How do I solve this by factoring
Antidisestablishmentarianism
How to add subtract multiply and divide radical expressions
Heres some info i learend
s but its not complete maybe i guess
Terms. We combine em by adding. The numbers or subtracting the numbers that are multiplied times the radicals.
The population of a city is modeled by the function \(y = 35000(0.94) {}^{t} \)where y is the population of the city after t years starting in the year 2000.what is the approximate population of the city in the year 2012? (round to the nearest person)
The given function is
\(y=35000(0.94)^t\)y is the population
t is the time since the year 2000
We need to find the population in the year 2012
To find t subtract 2000 from 2012
\(t=2012-2000=12\)Substitute t by 12 in the function above
\(\begin{gathered} y=35000(0.94)^{12} \\ y=16657.21102 \end{gathered}\)Round it to the nearest whole number
\(y=16657\)The population is about 16657 in the year 2012
100 POINTS Suppose ܶTU is on a coordinate plane located at T(-6,-2) and U(2,-6) Under a dilation of scale factor 1/4, TU becomes T'U' with coordinates T'(-3/2,-1/2) and U'(1/2,-3/2) Where is the center of the dilation located ?
A(0,0)
B(2,2)
C(4,0)
D(4,4)
c because the center of dilation is the multiplicatory value of the original point