Answer:
A
Step-by-step explanation:
r=d/2
=6/2 =3
2πr
2×3.14×3
=18.84
What value of z should we use when making a 93% confidence interval for p? A. 1.48 B. It's impossible to make a 93% CI. C. 2.70 D. 1.81
The value of z that should be used when making a 93% confidence interval for p is Z=1.81 that is option D.
The z score is a measure of how many standard deviations a raw score is below or above the population mean. It will be positive if the value is more than the mean and negative if it is less than the mean. It is often referred to as the standard score. It represents the number of standard deviations an entity has from the mean.
To utilise a z-score, both the mean and the population standard deviation must be known. The z score calculates the likelihood of a score occuring within a standard normal distribution. It also allows us to compare scores from various samples. A table for the values of, representing the values of the cumulative distribution function of the normal distribution, is known as a
At 93% confidence, the significance level is,
ɑ= 1-0.93
ɑ= 0.07
Divide alpha by 2,
ɑ/2= 0.07/2= 0.035
Now, from the ‘normal probability’ table, the z value corresponding to the inverse probability of 0.035 is 1.81.
As a result, the z value is 1.81 at 93% confidence level.
z= 1.81
The value for z score is 1.81
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Simplify. Express your answer as a single term using exponents.
1224. 1227
Answer: Um
Step-by-step explanation:
Paula is using the formula
A = 550(1 + 0.05)t to represent the
amount of money A in her savings
account after t years.
Determine whether each statement
is true or false
The correct answers are:True, True, False.
How to describe the variable in future value formula?The first statement is true. The initial investment is represented in the formula as the coefficient of the growth factor\((1+0.05)^t\).
The second statement is true. The growth factor in the formula is (1+0.05), which represents a 5% increase or a multiplier of 1.05.
The third statement is false. The annual interest rate is not 50%. The growth factor (1+0.05) represents a 5% increase, but the actual annual interest rate is 5%, not 50%.
Therefore, the correct answers are:
True
True
False
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determine whether the series is absolutely convergent, conditionally convergent, or divergent. [infinity] n6(−4)n n! n = 1 absolutely convergent conditionally convergent divergent
Therefore, the series `sum_(n=1)^(infty) 6*(-4)^n/(n!)` is conditionally convergent.
The series to determine is:\(`sum_(n=1)^(infty) 6*(-4)^n/(n!)`\)
Here, \(`n! = n*(n-1)*(n-2)*...*2*1`\)is the factorial of n. It is defined as the product of all positive integers from 1 to n.
Let's first check the convergence of the absolute value of the series.
Since all terms of the series are positive, the absolute value of the series is the series itself.
\(`sum_(n=1)^(infty) |6*(-4)^n/(n!)| = sum_(n=1)^(infty) 6*(4/3)^n/n!`\)
The ratio of successive terms is:\(`|a_(n+1)/a_n| = 4/3`\)
The limit of the ratio of successive terms is:`\(lim_(n- > infty) |a_(n+1)/a_n| = 4/3 < 1`\)
Since the limit of the ratio of successive terms is less than 1, the series converges absolutely.
Therefore, the series is absolutely convergent.
Let's now check the convergence of the series.
\(`sum_(n=1)^(infty) 6*(-4)^n/(n!) = 6 + 96 - 288/2 + 1536/6 - 12288/24 + ...`\)
The series can be rewritten as:\(`sum_(n=1)^(infty) (-1)^(n+1) 6*(4)^n/(n!)`\)
The series is the alternating harmonic series \(`sum_(n=1)^(infty) (-1)^(n+1)/n`\)multiplied by 6*4^n.
The alternating harmonic series is conditionally convergent and its absolute value is the harmonic series, which diverges.
The correct option is conditionally convergent.
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if you make $18 an hour for straight time, what would your
overtime rate be?
Answer:
$9.00
Step-by-step explanation:
18÷2=9
have a good weekend
Latasha looked at 3 websites every 15 hours. At that rate, how long, in hours, will it take to look at 5 websites
Since Latasha looked at 3 websites every 15 hours, at that rate, it will take Latasha 25 hours to look at 5 websites.
What is the unit rate?The unit rate shows the ratio between two values.
The unit rate is the quotient of two numbers, computed using the division and multiplication operations.
The number of websites Latasha looked in 15 hours = 3
The time it will take Latasha to look at 5 websites = 25 (15/3 x 5)
Thus, based on the rate, we can conclude that Latasha uses 5 hours to look at one website.
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question is linked below please helpp
Answer:
Step-by-step explanation:
(3x + 4)(5x - 2)(4x - 3) = 60x^3 + 11x^2 - 74x + 24 =>
a = 60
b = 11
c = -74
d = 24
Carina documents everything. She has checklists to keep her work in order. She has developed well thought-out flowcharts and process documents so that if and when she moves on to another job, anyone can be trained to do her job. Carina has strong experiential knowledge. tacit knowledge. informal training tools. explicit knowledge. on-the-job learning,
Carina has developed c) explicit knowledge, which refers to knowledge that is codified, easily transferable, and can be communicated through various mediums such as manuals, checklists, and flowcharts.
Her well thought-out process documents and checklists are examples of explicit knowledge.Additionally, Carina possesses tacit knowledge, which is personal knowledge gained through experience and is difficult to codify or communicate. Her experiential knowledge gained through on-the-job learning is an example of tacit knowledge.
However, Carina's informal training tools such as checklists and flowcharts can also be considered as on-the-job learning methods that have helped her acquire both explicit and tacit knowledge over time.
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The radius of a circle is 6 kilometers. What is the circle's circumference?
Answer:
37.699km
Step-by-step explanation:
C=piDor2piR
D=2R(6×2)=12
C=22/7×12or2×22/7×6
ans=37.699
What is the value of -16?
A. -4
B. -4i
C. 4i
D. 4;2
Answer:
B
Step-by-step explanation:
Answer:I don't get what d means and what it means by value but choose a.
it makes the most sense,
Step-by-step explanation:
-1/4m + 5 = 16; m =
what does m =
a fence 8 feet tall runs parallel to a tall building at a distance of 4 feet from the building. what is the length (in feet) of the shortest ladder that will reach from the ground over the fence to the wall of the building? (round your answer to two decimal places.)
The shortest ladder that will reach from the ground over the 8-foot tall fence to the wall of the building is 8.94 feet in length.
To find the length of the shortest ladder that will reach from the ground over the 8-foot tall fence to the wall of the building that is 4 feet away, we can use the Pythagorean theorem.
Step 1: Draw a right triangle where the vertical leg represents the height of the fence (8 feet) and the horizontal leg represents the distance between the fence and the building (4 feet). The hypotenuse of this triangle will represent the length of the ladder.
Step 2: Apply the Pythagorean theorem: a² + b² = c², where a and b are the legs of the right triangle and c is the hypotenuse (the ladder length).
Step 3: Plug in the values for a and b: (8 feet)² + (4 feet)² = c².
Step 4: Calculate the square of each leg: 64 + 16 = c².
Step 5: Add the results: 80 = c².
Step 6: Take the square root of both sides to find c: √80 = c.
Step 7: Round the answer to two decimal places: c ≈ 8.94 feet.
So, the shortest ladder that will reach from the ground over the 8-foot tall fence to the wall of the building is approximately 8.94 feet in length.
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3-2(1+2)?
1 (1+2)
1+2
3
Answer:
your method is wrong, final answer should be -3
Step-by-step explanation:
symbols are used in the order of bracket first, then multiplication and division, then addition and subtraction
i.e.
3 - 2(1 + 2)
= 3 - 2(3)
= 3 - 6
= -3
Answer:
=-3
Step-by-step explanation:
A function, g, is defined by g : x --> 2x -7. Find m if g(m)
= 5.
A function, g, is defined by g : x --> 2x -7. The value of the m = 6 is the solution of the given equation.
Given, a function, g, is defined by g : x --> 2x -7.
We are asked to find the value of m if g(m) = 5.
What is a function? A function is a rule that takes a set of inputs and assigns to each a unique output. In other words, a function is a relation between two sets, where the elements of the first set are related to the elements of the second set. A function is denoted by y = f(x), where y is the output and x is the input.
The given function is g : x → 2x − 7. We need to find m if g(m) = 5. It means that when we substitute m in the given function, we get an output of 5.
So, 2m - 7 = 5 Adding 7 on both sides 2m = 12 Dividing by 2, we get m = 6.
Therefore, m = 6 is the solution of the given equation.
To find m if g(m) = 5, we can substitute g(m) in the function g.
Therefore, 2m - 7 = 5 Adding 7 on both sides, we get2m = 12 Dividing by 2, we get m = 6
Therefore, m = 6 is the solution of the given equation.
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please help me asappp
Answer:
1) -20.5
-8
4.5
13
2) 9
4
-1
-6
3) 2
4
6
8
Step-by-step explanation:
plug in the x values, then use pemdas
*NEED ANSWER ASAP*
Find the slope of (-4/6) and m=3/4.
The equation of line in slope intercept form is, \(y=\frac{3}{4}x+9\).
What is slope point form of the line?
A line's point slope form equation is y - y1 = m. (x – x1). Consequently,
y - 0 = m(x = 0), or y = mx, is the equation of a line passing through the origin with a slope of m.
Let the line passes through the point (-4, 6) and having slope 3/4.
We know that the equation of line passes through the point \((x_1, y_1)\) and having slope m is,
\(y-y_1=m(x-x_1)\)
Here, \((x_1, y_1) = (-4, 6)\) and slope \(m = \frac{3}{4}\)
Plug the values in the above equation.
⇒
\(y-6=\frac{3}{4}(x-(-4))\\ y - 6 = \frac{3}{4}(x + 4)\\ y-6=\frac{3}{4} x + 3\\y = \frac{3}{4}x+3+6\\ y=\frac{3}{4}x+9\)
Hence, the equation of line in slope intercept form is, \(y=\frac{3}{4}x+9\).
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Math pls help now. Pl
Answer:
The answer is 44. 10% more than 40 is 40 + 4 = 44.
Step-by-step explanation:
To find 10% more of a number, you can simply multiply the number by 10%. In this case, 10% of 40 is 40 * 0.1 = 4. Therefore, 10% more than 40 is 40 + 4 = 44.
Answer:
110/100 × 40 = 44 ( remember this is not the only ans)
all numbers must be greater than 44
15. Solve the compound inequality.
5x - 11 < -11 or 4x + 2 > 14
Answer:
Step-by-step explanation:
5x −11+11<-11+11
5x<0
5x/5<0/5
x<0
4x+2 -2 >14 -2
4x>12
4x/4>12/4
x>3
there both open not closed
hope this helps
You and your friend are trying to meet up at the park. You are currently 256 m directly west from the centre of the park. Your friend is currently 388 m directly north from the centre of the park. What is the distance between you and your friend?
Answer:
The distance between the two is 465 meters
Step-by-step explanation:
We first need to set up a triangle that shows the relative position and distances of the two friends
Please check attachment for this
To get this distance, which represents the hypotenuse of the triangle, we make use of Pythagoras’ theorem
Mathematically;
Pythagoras’ theorem states that the square of the hypotenuse equals the sum of the squares of the two other sides
Thus;
D^2 = 256^2 + 388^2
D^2 = 216,080
D = √216,080
D = 464.84 which is approximately 465 m
a diver was collecting water samples from a lake. he collected a sample at every 3m, starting at 5m below water surface. the final sample was collected at a depth of 35m.how many sample did he collected
The diver collected water samples at every 3 meters, starting from 5 meters below the water surface, up to a final depth of 35 meters.
We can find the number of samples collected by dividing the total depth range by the distance between each sample and then adding 1 to include the first sample.
The total depth range is:
35 m - 5 m = 30 m
The distance between each sample is 3 m, so the number of samples is:
(30 m) / (3 m/sample) + 1 = 10 + 1 = 11
Therefore, the diver collected a total of 11 water samples.
What is the distance between the points (13 , -18) and (-10 , -18) in the coordinate plane?
what is the answer
Answer:
23
Step-by-step explanation:
There are 48 people in gym class. What fraction represents the number of people running?
5/8 of the people were in spin class.
1/3 of the people were lifting weights
The remaining people were running
A. 1/8
B. 1/24
C. 1/12
D. 23/24
Answer:B
Step-by-step explanation:
5/8 of 48 is 30.
1/3 of 48 is 16.
So 30 people are spinning and 16 are lifting weights.
48-30-16=2
There are two people left out of 48.
2/48 reduces to 1/24.
Brett is performing a hypothesis test in which the population mean is 310 and the standard deviation is 20. his sample data has a mean of 295 and a sample size of 50. which of the following correctly depicts the z-statistic for brett’s data? –5.30 –0.11 4.28 6.27
The z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
How to find the value of z-statistic for population mean?Suppose we're specified that:
The sample mean = \(\overline{x}\)The population mean = \(\mu\)The population standard deviation = \(\sigma\)The sample size = nThen the z-statistic for this data is found as:
\(Z = \dfrac{\overline{x} - \mu}{\sigma/\sqrt{n}}\)
For this case, we've got:
The sample mean = \(\overline{x}\) = 295The population mean = \(\mu\) = 310The population standard deviation = \(\sigma\) = 20The sample size = n = 50Thus, we get:
\(Z = \dfrac{\overline{x} - \mu}{\sigma/\sqrt{n}} = \dfrac{295 - 310}{20/\sqrt{50}} \approx -5.30\)
Thus, the z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
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According to the given data and applying it's formula, the z-statistic is of z = -5.30.
What is the z-statistic formula?It is given by:
\(z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}\)
The parameters are:
\(\overline{x}\) is the sample mean.\(\mu\) is the value tested at the null hypothesis.\(\sigma\) is the standard deviation of the population.n is the sample size.In this problem, the values of the parameters are given by:
\(\overline{x} = 295, \mu = 310, \sigma = 20, n = 50\)
Hence, the z-statistic is given by:
\(z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}\)
\(z = \frac{295 - 310}{\frac{20}{\sqrt{50}}}\)
z = -5.30.
The z-statistic is of z = -5.30.
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Use mental math to solve for the missing number:
Answer:
39
Step-by-step explanation:
Let the number be x.
The quotient of x and 3 is 13.
x/3 = 13
Multiply both sides by 3.
x = 13 × 3
x = 39
Answer:
39
Step-by-step explanation:
The quotient of a number and 3 is 13. That's the same as saying n/3 = 13.
IF you multiply both sides of the equation by 3, you get n = 39, which is what we want.
John is shipping a box. FedEx is going to charge him a flat rate of $5 and then $0.50 per pound. UPS is going to charge him $2 per pound. He wants to find the cheaper carrier and writes his system of equations as follows: Y = .50x + 5 Y = 2x
Did John write his systems of equations correctly?
Answer:
Yes, John did write his systems of equations correctly.
Step-by-step explanation:
FedEx charges him a flat rate of $5, so the 5 stands alone in the problem, and $0.50 per pound, so the 0.5 stands with the x because it represents each pound.
UPS doesn't charge him a flat rate so there is no stand-alone number. Since they charge $2 per pound, 2 is with the x, again representing each pound.
An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
The system of equations used is:
y = 5 + 0.50x
y = 2x
Yes, the system of equations is used correctly.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 5 = 9 is an equation.
We have,
FedEx:
Cost of x pounds.
y = 5 + 0.50x
For x = 2.
= 5 + 1
= 6
UPS:
Cost of x pounds.
y = 2x
For x = 2.
= 2 x 2
= 4
We see that,
The cheaper carrier is FedEx.
Thus,
The system of equations used is:
y = 5 + 0.50x
y = 2x
Yes, the system of equations is used correctly.
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Which equation represents a line that passes through (2,-) and has a slope of 3?
Oy-2 = 3(x + 2)
Oy - 3 = 2(x+)
Oy+ 1 = 3(x - 2)
Oy+ < = 2(x-3)
Help?
The equation of the line is y + 1 = 3(x - 2).
The correct option is (3).
What is an equation?Equation: A statement that two variable or integer expressions are equal. In essence, equations are questions, and the motivation for the development of mathematics has been the systematic search for the answers to these questions.
As per the given data:
The line passes through the point (2, -1)
slope of the given line is 3
By using the slope intercept form of line:
y = mx + c
where m is the slope
c is the y intercept
The line passes through the point (2, -1) so substituting the point in the equation also m = 3
y = 3x + c
-1 = 3(2) + c
c = -7
The equation of the line now can be written as:
y = 3x - 7
y + 1 = 3x - 7 + 1
y + 1 = 3(x - 2)
Hence, the equation of the line is y + 1 = 3(x - 2).
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Factorise
a²-10a+24+6b-9b²
Answer:
The expression is not factorable with rational numbers
Step-by-step explanation:
a²-10a+24+6b-9b²
(a-6)(a-4)+3b(2-3b) but this is incorrect
Therefore, the expression is not factorable with rational numbers
Simplify an expression of the model
An expression for the given model can be simplified as -x - 2.
Given a model.
The model consists of 2 times x and 3 times -x.
This can be written as 2x + (3 × -x) = 2x - 3x = -x
It also consists of some 1's and '-1's.
In the first column, there are 3 1's = 3
Next, there are 2 1's and 1 '-1' = 2 + -1 = 1
Next, there are 3 '-1's = -1 + -1 + -1 = -3
Next also = -1 + -1 + -1 = -3
So summing up all these,
Expression is -x + 3 + 1 - 3 - 3 = -x - 2
Hence the required expression is -x - 2.
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x-y=3
Its a lesson called standard form.
Answer:
To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x
and solve for
y.x-intercept(s): (3,0)
y-intercept(s): (0,−3)
Step-by-step explanation:
Given f(x) = 4-x² and (f - g)(x)=-x²+x+2, find the function g.
Answer:
g(x) = 2 - xStep-by-step explanation:
Givenf(x) = 4 - x²,(f - g)(x) = - x² + x + 2.Find g(x)SolutionWe know that:
(f - g)(x) = f(x) - g(x)Use the given to find the missing function:
g(x) = f(x) - (f - g)(x) g(x) = 4 - x² - (- x² + x + 2) =4 - x² + x² - x - 2 =2 - xAnswer:
\({ \rm{f(x) = 4 - {x}^{2} }}\)
\({ \rm{(f - g)(x) = - {x}^{2} + x + 2}}\)
- From functions;
\({ \boxed{ \tt{(f - g)(x) = f(x) - g(x)}}} \\ \\ { \rm{ - {x}^{2} + x + 2 = (4 - {x}^{2} ) - g(x) }} \\ \\ { \rm{g(x) = (4 - {x}^{2}) + {x}^{2} - x - 2 }} \\ \\ { \boxed{ \rm{g(x) = 2 - x}}}\)