Answer:
2
Step-by-step explanation:
1250/5 = 250/5 = 50/ 5 = 10/5 = 2
So we pulled sqrt 5, sqrt 5, sqrt 5, sqrt 5
sqrt 5 * sqrt 5 = 5 (do twice)
25 sqrt 2
Which expressions are equivalent to 5+(-3)(6x-5)5+(−3)(6x−5)5, plus, left parenthesis, minus, 3, right parenthesis, left parenthesis, 6, x, minus, 5, right parenthesis ? Choose all answers that apply: Choose all answers that apply: (Choice A) A 18x-2018x−2018, x, minus, 20 (Choice B) B 3x-33x−33, x, minus, 3 (Choice C) C None of the above
5+(-18x+15)5 + (-18x +15)5
5+ (-90x +75) + (-90x + 75)
-180x +155
let's see the alternatives:
a) -2000x - 2018 -> -200x - 201,8
b) -30x - 33 -> -180x -198
c) none of the above
so, c is the right one
hope it helps :)
Answer:
ITS C
Step-by-step explanation:
5 + 2x/ 3x - 1 = 6/7
Step-by-step explanation:
5-1+0.85= -0.666x
4.85/-0.666= -0.666/-0.666x
x= -5.6
What is the equation of the line that passes through the point (5,2) and has a
slope of -6
Answer: If the given slope is –6/5, the equation is
y –2 = –6/5(x -5)
The attachment shows the graph of this equation.
The point-slope form is y = –6x/5 + 8
Step-by-step explanation: The basic form for a point-slope equation is
y - b = m(x - a)
a is the x-value from the given coordinate, b is the y-value form the given coordinate, m is the slope. x and y are the variables in the function.
The slope, m, is given: -6/5 Substitute for m
Given coordinate points (5,2) substitute the x-value in place of a and the y-value in place of b
Rewrite the equation:
y - b = m(x - a) becomes
y - 2 = –6/5(x - 5)
the ratio of boys to girls in the sixth grade is 2:3
If there are 24 boys how many girls are there
I think it is eight.
A researcher wishes to estimate the proportion of adults who have high-speed internet access. What die sample should be obtained the wishes the estimate to be within 001 with confidence it () shouses a previous estimate of 0.327 (b) she does not use any prior tales? Click the icon to view the table of critical values х Instructor tip X (an-Round up to the nearest integer) (b)-(Round up to the nearest inlager) Show your work for full credit. You may show what you did by hand or copy and paste from StatCrunch if you used it
To determine the sample size needed to estimate the proportion of adults with high-speed internet access with a desired margin of error and confidence level, we can use the formula:
n = (Z^2 * p * (1 - p)) / E^2
where:
n is the required sample size
Z is the z-score corresponding to the desired confidence level
p is the estimated proportion (prior estimate)
E is the desired margin of error
(a) When using a prior estimate of 0.327:
If we assume a 95% confidence level (corresponding to a z-score of approximately 1.96) and a desired margin of error of 0.01, the formula becomes:
n = (1.96^2 * 0.327 * (1 - 0.327)) / 0.01^2
n ≈ 1066.02
Therefore, a sample size of approximately 1067 should be obtained when using the prior estimate of 0.327.
(b) When not using any prior estimate:
If we don't have any prior estimate and want to be conservative, we can assume a worst-case scenario where p = 0.5 (since 0.5 maximizes the sample size). Using the same values for the confidence level and margin of error, the formula becomes:
n = (1.96^2 * 0.5 * (1 - 0.5)) / 0.01^2
n ≈ 9604.04
Therefore, a sample size of approximately 9605 should be obtained when not using any prior estimate.
It's important to note that these sample size calculations assume a simple random sample and certain assumptions about the population. Adjustments may be necessary depending on the specific sampling method and population characteristics.
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A Pew Research Center report on gamers and gaming estimated that 49% of U.S. adults play video games on a computer, TV, game console, or portable device such as a cell phone. This estimate was based on a random sample of 2001 U.S. adults. Construct and interpret a 95% confidence interval for the proportion of all U.S. adults who play video games.
Using the z-distribution, it is found that the 95% confidence interval for the proportion of all U.S. adults who play video games is (0.4681, 0.5119). It means that we are 95% sure that the true proportion of all U.S. adults who play video games is between 0.4681 and 0.5119.
What is a confidence interval of proportions?A confidence interval of proportions is given by:
\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)
In which:
\(\pi\) is the sample proportion.z is the critical value.n is the sample size.In this problem, we have that:
95% confidence level, hence\(\alpha = 0.95\), z is the value of Z that has a p-value of \(\frac{1+0.95}{2} = 0.975\), so \(z = 1.96\). 49% out of 2001 U.S. adults play video games, hence \(\pi = 0.49, n = 2001\).The lower bound of the interval is:
\(\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.49 - 1.96\sqrt{\frac{0.49(0.51)}{2001}} = 0.4681\)
The upper bound of the interval is:
\(\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.49 + 1.96\sqrt{\frac{0.49(0.51)}{2001}} = 0.5119\)
The 95% confidence interval for the proportion of all U.S. adults who play video games is (0.4681, 0.5119). It means that we are 95% sure that the true proportion of all U.S. adults who play video games is between 0.4681 and 0.5119.
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-1 2/3 -5 1/2 multiply
help please
Answer:
-9.16666666667
Step-by-step explanation:
there
Answer:-9.16666666667
Step-by-step explanation:
PLS HELP!!!!
EMERGENCY!
What is the exponential regression equation for the data set?
X: 1, 3, 5, 7, 9, 11, 13
Y: 12, 21, 29, 36, 44, 58, 67
(A) yˆ=12.85⋅1.15x
(B) yˆ=12.85⋅0.15x
(C) yˆ=1.15⋅12.85x
(D) yˆ=(1.15⋅12.85)x
Answer:
B, i'm not quite sure though i hope this helped
Step-by-step explanation:
Answer:
its A
Step-by-step explanation:
I just took the test
Which property is illustrated by this problem? 99.78 + 0 = 99.78
Answer:
Identity property of addition.
Step-by-step explanation:
The identity property of addition says that the sum of 0 and any number is that number. So 99.78 + 0 = 99.78 is identity property of addition. This is true because the definition of 0 is "no quantity", so when we add 0, the number doesn't change.
Please help Asap. No links or files, i will report! Show work Please!
The value of x is 13.85.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
From the figure,
(7x + 1)° and (6x - 1)° makes a straight angle.
This means,
(7x + 1) + (6x - 1) = 180
7x + 1 + 6x - 1 = 180
13x = 180
x = 180/13
x = 13.85
Thus,
x is 13.85°
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(52 divided by 4) + 5 exponent 3
Answer:
138
Step-by-step explanation:
52÷4+5^3
52÷4+125
13+125
138
How do the phrases how does it take over an entire being in a single, momentary glance, not only beloved by the gods but also beloved by me, ariadne, and together as one being for all eternity impact the meaning of the story?
The phrases "how does it take over a complete being in a single, momentary look" are used to describe who feels for the other more in the relationship, they say. As a result, choice D is right.
What are momentary emotions?I experience momentary emotions at any particular time. It's essential for me to acknowledge that bad emotions exist when they do. and to pay close attention to them. That helps me better manage these emotions.
What exactly is "momentary action"?When a switch is activated and the button removed, the switch performs a brief action and then returns to its original state.
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The correct question is:
How do the phrases "how does it take over an entire being in a single, momentary glance", "not only beloved by the gods but also beloved by me, Ariadne", and "together as one being for all eternity" impact the meaning of the story?
(A) They describe how quickly Ariadne and Theseus fell in love.
(B) They explain how Ariadne was the one who initiated the relationship.
(C) They emphasize how Ariadne is easily overcome by feelings of love.
(D) They explain who cares more for the other in the relationship.
Can someone please help me on this problem?
Find a value that makes this statement true-
Nine more than a number is equal to thirteen
Answer:
x=4
Step-by-step explanation:
9+x=13
x=4
Answer:
The number is 4
Step-by-step explanation:
Let the number = x
Nine more than a number: x +9
x + 9 = 13
Subtract 9 from both sides
x + 9 -9 = 13 - 9
x = 4
NEED HELP ASAP!!!
What is the probability that the event will occur?
Work Shown:
n(A only) = number of items inside set A only
n(A only) = 12
n(A and B) = 16
n(B only) = 20
n(A or B) = n(A only) + n(A and B) + n(B only)
n(A or B) = 12 + 16 + 20
n(A or B) = 48
n(Total) = n(A only) + n(A and B) + n(B only) + n(Not A, not B)
n(Total) = 12+16+20+24
n(Total) = 72
P(A or B) = n(A or B)/n(Total)
P(A or B) = 48/72
P(A or B) = 0.67 approximately
a is an nn matrix. determine whether the statement below is true or false. justify the answer. if a for some scalar , then is an eigenvector of a.
The statement is false. The existence of a scalar α such that αv is an eigenvector of a does not imply that v itself is an eigenvector of a.
What is matrix?A group of numbers built up in a rectangular array with rows and columns. The elements, or entries, of the matrix are the integers. In addition to numerous mathematical disciplines, matrices find extensive use in the fields of engineering, physics, economics, and statistics.
The statement is false. An eigenvector is a non-zero vector that, when multiplied by a matrix, produces a scalar multiple of itself. In other words, if v is an eigenvector of a matrix A, then Av = λv, where λ is the corresponding eigenvalue.
The statement suggests that if a is an nn matrix (presumably an n x n matrix), and a scalar α exists such that αv is an eigenvector of a, then v must also be an eigenvector of a. However, this is not necessarily true.
Let's consider a counterexample to demonstrate this. Suppose we have the 2x2 identity matrix I:
I = [[1, 0],
[0, 1]]
In this case, any non-zero vector v will satisfy the condition αv = v for α = 1. However, not all non-zero vectors v are eigenvectors of I. In fact, the only eigenvectors of I are [1, 0] and [0, 1] with corresponding eigenvalues of 1.
Therefore, the statement is false. The existence of a scalar α such that αv is an eigenvector of a does not imply that v itself is an eigenvector of a.
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Mary deposits $260.00 into a new savings account.
The account earns 2.5% simple interest per year. No
money is added or removed from the account for
5 years. What is the total amount of money in her
savings account at the end of the 5 years?
A) $292.50
C) $65.00
D) $325.00
B) $32.50
Answer:
A
Step-by-step explanation:
To solve this problem, we need to first find out how much interest the account earns each year. If the account earns 2.5% simple interest per year, and it starts with an initial balance of $260, then the interest earned each year is 0.025 * $260 = $6.50.
Over 5 years, the account will earn a total of 5 * $6.50 = $<<5*6.5=32.50>>32.50 in interest.
To find the total amount of money in the account at the end of the 5 years, we need to add the interest earned to the initial balance of the account. The total amount of money in the account will be $260 + $32.50 = $<<260+32.5=292.50>>292.50.
Therefore, the total amount of money in the account at the end of the 5 years is $292.50.
Answer:
A) $292.50
Step-by-step explanation:
Simple Interest Formula
A = P(1 + rt)
where:
A = Final amountP = Principal amountr = Interest rate (in decimal form)t = Time (in years)Given:
P = $260.00r = 2.5% = 0.025t = 5 yearsSubstitute the given values into the formula and solve for A:
⇒ A = 260(1 + 0.025 · 5)
⇒ A = 260(1 + 0.125)
⇒ A = 260(1.125)
⇒ A = 292.50
Therefore, the total amount of money in her savings account at the end of 5 years is $292.50.
Solve for W
(W/-5) -4=-2
Answer: \(\Large\boxed{W=-10}\)
Step-by-step explanation:
Given equation
\((\dfrac{W}{-5} )-4=-2\)
Add 4 on both sides
\((\dfrac{W}{-5} )-4+4=-2+4\)
\((\dfrac{W}{-5} )=2\)
Multiply -5 on both sides
\((\dfrac{W}{-5} )\times (-5)=2\times(-5)\)
\(\Large\boxed{W=-10}\)
Hope this helps!! :)
Please let me know if you have any questions
A small town's phone numbers either begin 373 or 377. How many phone numbers are available? A. 20,000. B. 10,000 C. 30,000 D. 40,000
The correct option is A. 20,000, as there are a total of 20,000 phone numbers available for the small town.
We know that the phone numbers of a small town either begin with 373 or 377. We are required to find out the number of phone numbers that are available. To solve this question, we need to count the number of phone numbers that are available for each prefix.
The prefix 373 can have numbers ranging from 3730000 to 3739999. Similarly, the prefix 377 can have numbers ranging from 3770000 to 3779999.
Therefore, the total number of phone numbers that are available is the sum of the phone numbers available for each prefix.
Total number of phone numbers = Number of phone numbers available for prefix 373 + Number of phone numbers available for prefix 377
Total number of phone numbers = 10000 + 10000
Total number of phone numbers = 20000
Therefore, The correct option is A. 20,000, as there are a total of 20,000 phone numbers available for the small town.
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3. Select the angles that identify an obtuse triangle. Mark all
that apply.
A
acute, acute, acute
(B
acute, acute, obtuse
ll Publishing Company
©
right, acute, acute
D
obtuse, right, acute
1
Explanation:
A. If all 3 angles are acute, then the triangle overall is acute.B. We have one obtuse angle, so the triangle is obtuse. It is impossible to have more than one obtuse angle. The other two angles must be acute.C. This is a right triangle because of the right angle (aka 90 degree angle). It's impossible to have an obtuse angle for any right triangle.D. This triangle isn't possible. Refer to parts B and C.If a finite number of terms are added to a convergent series, then the new series is still convergent.True/False
Answer:
True
Step-by-step explanation:
The statement is true. If a finite number of terms are added to a convergent series, then the new series is still convergent.
A convergent series is a series whose sum approaches a finite limit as the number of terms increases. When you add a finite number of terms to a convergent series, the sum of the series is simply increased by the sum of those additional terms. Since the original series converges to a finite limit, adding a finite sum to that limit will result in another finite limit, meaning that the new series will also be convergent.
In summary, adding a finite number of terms to a convergent series does not change its convergence properties and will result in a new convergent series with an updated finite limit.
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I need some help with this I don't understand this much.
Answer:
ΔX = 6 – -1 = 7
ΔY = 3 – 2 = 1
Step-by-step explanation:
the slope is 7 the equation is y = 1/7x +15/7
x1=6
y1=-6
x2=3
y2=2
4x - 3 + 5 = 2x + 7 - 8x
Answer:
1/2Step-by-step explanation:
\(4x-3+5=2x+7-8x\\\\\\4x+2=7-6x\\\\\\4x+6x=7-2\\\\\\10x=5\\\\\\x=\dfrac{5}{10}\\\\\\\bold{x=\dfrac{1}{2}}\)
Simplify the following expression by combining liker terms: 4x +9 -6x +6
10X-15
10x+15
-2x+15
2x+15
Explain your thinking.
Answer:
its very simple you just need to collect like terms...
which is 4x-6x+6+9 which is
-2x+15.
This is my answer I hope it helps you.
Answer:
i think its -2x+15
Step-by-step explanation:
you do 4x-6x (-6 cuz it has a neg. in front) which gives you -2x then 9+6 and it gives you 15
Which point represents the opposite of -1 on the number line?
Answer:
The answer is 1
Step-by-step explanation:
If it asks for the opposite of a positive number add a subtraction mark showing its negative, do the opposite if it asks for the opposite of a negative number.
which of the following is like a standard deviation for all error scores in regression?
The standard error of the estimate is like a standard deviation for all error scores in a regression.
The standard deviation of the sample distribution is referred to as the standard error in statistics. In most cases, the sample mean of a data set differs from the actual population mean. SE is used to denote it. It is used to gauge how well a sample of a population represents that population.
The measure of the sample mean of the population is expressed as the standard deviation of the measure of the standard error of the mean, also known as the standard deviation of the mean. It is referred to as SEM. For instance, the sample mean typically serves as an estimator of the population mean. However, if we take yet another sample from the same population, it can yield a different result.
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1
Select the correct answer.
If x is a number that is 7 more than y, how do you express x as a function of y?
O A.
X = fy) = 7 + x
OB. X = f(y) = 7 + y
OC. y = f(x) = 7x
OD.y= f(x) = y - 7
O E. y = f(x) = 7 + y
Answer:
O A.
X = fy) = 7 + x
OB. X = f(y) = 7 + y
OC. y = f(x) = 7x
OD.y= f(x) = y - 7
O E. y = f(x) = 7 + y
Step-by-step explanation:
find the length of rt
Answer:
6
Step-by-step explanation:
a 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. a preliminary sample standard deviation is 1.5. the smallest sample size n that provides the desired accuracy is
The smallest sample size n that provides the desired accuracy is 10.
To find the smallest sample size n that provides the desired accuracy, we can use the formula:
n = (Z-value * standard deviation / margin of error)²
Where:
Z-value = the critical value for the desired confidence level (in this case, 1.96 for 95% confidence)
Standard deviation = the preliminary sample standard deviation (1.5 in this case)
Margin of error = the desired accuracy (0.3 units in this case)
Substituting the values, we get:
n = (1.96 * 1.5 / 0.3)²
n = 9.8
Since we cannot have a fractional sample size, we round up to the nearest whole number, giving us:
n = 10
Therefore, the smallest sample size n that provides the desired accuracy is 10.
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Simplify the following and express the result in positive exponential form
( 3/11)-2 x ( 3/11)-5
Answer:
Step-by-step explanation:
Solution:
Your problem → (3/11)-2 x (3/11)-5
(3/11)-2x(3/11)-5
=(3/11)-2x × (3/11)-5
=(3/11)-(6x/11)-5
=(3-6x-5×11)/11
=3-6x-55/11
=(-52-6x)/11
the graph of y=x^2-4x is shown. name a zero of the function below
Answer:
0 and 4
Step-by-step explanation:
y = x^2 - 4x can be factored as follows: y = x(x - 4).
We find the zeros by setting this factored form equal to zero and solving for x:
x(x - 4) = 0, or x = 0, or x = 4.
The two zeros of this function are 0 and 4.