Answer:
y={7,10,19,22}
Step-by-step explanation:
3(2)+1 = 6+1 = 7
3(3)+1 = 9+1 = 10
3(6) + 1 = 18+1 = 19
3(7) + 1 = 21+1 = 22
shelby was asked to determine the number of packages that can be wrapped with 12 feet of ribbon if it takes a half of a foot to wrap one package.
The number of packages that can be wrapped with 12 feet of ribbon is 24.
Explain the term unitary method?The unitary approach is a strategy for problem-solving that involves first obtaining the value of a specific unit, then multiplying that value to determine the required value.The unitary approach includes determining the value of a single unit, from which we can calculate the values of the appropriate number of units.For the stated question.
Total length of the ribbon = 12 feet.
Ribbon required to wrap a one box = 1/2 foot.
Number of boxes = Total length / required ribbon for one box
Number of boxes = 12/ (1/2)
Number of boxes = 12 x 2
Number of boxes = 24
Thus, the number of packages that can be wrapped with 12 feet of ribbon is 24.
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PLEASE HELPPPPP
Also that’s a 14 and 17
During a 20% off sale the sale price of a radio was 35.96 what was the regular price?
Answer:
43.152
Step-by-step explanation:
6/5*35.96=43.152
If Jasmine roller skates 280 miles in 7 weeks and skates the same distance each week, how many miles does she skate each week?
Answer:
40
Step-by-step explanation:
280 divided by 7
Determine whether the pair of lines appear to be parallel or perpendicular.
1. The lines are perpendicular because they are always the same distance apart and never intersect.
2. The lines are parallel because they intersect at a right angle.
3. The lines are parallel because they are always the same distance apart and never intersect.
4. The lines are perpendicular because they intersect at a right angle.
Two sets of elementary schoolchildren were taught to read by using different methods, 50 by each method. At the conclusion of the instructional period, a reading test yielded the results y1 =74,y2 =71,s1 =9,ands2 =10.
(a) and (b). (question (a) means: give the two hypothesis, and calculate the
p-value).
The null hypothesis and the alternate hypothesis for the set of elementary school children is given by H₀ : μ₁ = 2 and H₁ : μ₂ ≠ 0 and the p-value is 0.136 .
Given x₁ = 74 , x₂ = 72
s₁ = 9 , s₂ = 11 (standard deviation)
n₁ = 50 ,n₂ = 50
Let μ₁ be the true mean for x₁
Let μ₂ be the true mean for x₂
null and alternate hypothesis:
H₀ : μ₁ - μ₂ = 0
H₁ : μ₁ - μ₂ ≠ 0
Test statistic ,
Z = (x₁ - x₂ - D₀ ) / (√σˣ₁² /n₁ + √σˣ₂² /n₂ )
Now we will substitute the values to calculate the the test statistic.
D₀ = μ₁ - μ₂
hence Z₀ = (74 - 72) / √(81/80+121/50)
or, Z₀ = 1.49256..
or, Z₀ ≈ 1.49
Now we will calculate the p-value using the z-score.
p-value:
= 2P(Z > Z₀)
= 2P(Z>1.49)
= 2 {1-0.93189}
= 0.1362...
≈ 0.136
Hence the p-value is 0.136 .
A hypothesis is presented as a theory to explain a certain phenomenon. A hypothesis cannot be said to as a scientific hypothesis if it cannot be tested using the scientific process.
History-based observations that can't currently be fully explained by existing bodies of knowledge are typically where science starts. A hypothesis is a theory put out to explain an observed occurrence or a proven assertion regarding the relationship between two or more variables in a scientific field.
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Given the equation, y=3x, complete the table of values
x (input)
y (output)
-2
-1
0
1
2
Answer:
To find the answers you just need to multiply each value by 3. This is as we are given the information that y is equal to 3x. If we know this and we know the values of x we can easily work out the output (y)!!
-2 = 3 x -2 = -6-1 = 3 x -1 = -30 = 3 x 0 = 01 = 3 x 1 = 32 = 3 x 2 = 6We can also see a pattern of +3 going upwards!!
Hope this helps, have a great day!
Give an example of a function that is a dilation and a reflection of the parent function.
Answer: f(x) = -1/2(x+3)
Example: g(x) = -1/2(-x-3)
This function is a dilation and a reflection of the parent function f(x) because when graphed, the two functions have the same shape but are reflected over the y-axis and are half the size of the original.
Mihir has 14,203 beads. He uses 36 beads to
make one necklace. How many necklaces can
he make?
Answer:
394
Step-by-step explanation:
because 14,203 divided by 36 is 394.527777778 but the complete number of necklaces he can make is 394.
Express the triple integral f(x, y, z)dV as an iterated integral in cylindrical coordinates for the given function f and solid region E
Evaluate the iterated integral.
f(x, y, z) = xy ZA 256-x-y? -y E == x + y ? 0
The triple integral f(x, y, z)dV for the following function f is 256π(256 - x - y)² as an iterated integral in cylindrical coordinates.
In two-dimensional space R2, a point with rectangular coordinates (x, y) can be identified with (r, θ) in polar coordinates and vice versa, where x=rcosθ, y=rsinθ, r2=x2+y2 and tanθ=(y.x) are the relationships between the variables.
In three-dimensional space R3, a point with rectangular coordinates (x, y, z) can be identified with cylindrical coordinates (r,θ,z) and vice versa. We can use these same conversion relationships, adding z as the vertical distance to the point from the x y-plane
According to the question:
The integrated integral in cylindrical coordinates is given by:
∫∫∫f(ρ, θ, z)dV = ∫∫∫xρcos(θ)ρsin(θ)zdρdθdz
Evaluating the integral yields:
∫∫∫f(ρ, θ, z)dV = 256π∫zdz
= 256πz²
= 256π(256 - x - y)²
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rationalise the denominator and simplify
[tex]\frac{7}{\sqrt{} 7}[/tex]
Given surd [tex]\frac{7}{\sqrt{7} }[/tex] after rationalization we get it as [tex]\sqrt{7}[/tex]
What is Rationalization ?The process of rationalization can be thought of as the removal of a radical or an imaginary number from the denominator of an algebraic fraction. In other words, eliminate the radicals from a fraction so that the denominator is solely composed of rational numbers.
Here we use the Rationalization technique
Given surds,
[tex]\frac{7}{\sqrt{7} }[/tex]
Multiplying Numerator and Denominator [tex]\sqrt{7}[/tex]
Then,
[tex]\frac{7}{\sqrt{7} }[/tex] × [tex]\frac{\sqrt[]{7} }{\sqrt{7} }[/tex]
We get the result as [tex]\frac{7\sqrt{7} }{7}[/tex] which is equal to √7
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PLSSS HURRYYYY!!! 30 POINTS!
The slopes of the sides of quadrilateral JKLM are: 3,-3,, and -3.
Why you lie you say 30 but give a 15
someone pleasee help
The table of values and the linear equations indicates
4. Andy is correct, the equation of the table of values is; y = 2·x + 4
5. The Three equations are the same
What is a linear equation in algebra?A linear equation is an equation that produces a straight line graph, when plotted on the coordinate plane and can be expressed in the form; y = m·x + c
Where;
m = The slope of the straight line graph of the equation
c = The y-intercept
4. The values in the table indicate that the difference between consecutive terms in the x-values and the first difference in the y-value is constant, therefore, the values represent a linear relationship.
The slope, m, of the linear relationship is constant and it can be found using any two pair of points as follows;
m = (4 - 2)/(0 - (-1)) = 2
The equation is therefore;
y - 2 = 2·(x - (-1)) = 2·(x + 1) = 2·x + 2
y = 2·x + 2 + 2 = 2·x + 4
The equation, y = 2·x + 4 is in the form y = m·x + c, therefore;
Andy is correct
5. The slope-intercept form of the equation of a straight line is; y = m·x + c
Therefore;
y + 1 = 2·x -3
y + 1 - 1 = 2·x - 3 - 1 (subtraction property)
y = 2·x - 4
The equation, y = 2·x - 4, is in the form, y = m·x + c
2·x - 3 = y + 1
2·x - 3 - 1 = y + 1 - 1 (subtraction property)
2·x - 4 = y
y = 2·x - 4 (symmetric property)
The equation, y = 2·x - 4 is in the form, y = m·x + c, which is the same as the first equation
2·y + 2 = 4·x - 6
2·y + 2 - 2 = 4·x - 6 - 2 (subtraction property of equality)
2·y = 4·x - 8
2·y ÷ 2 = (4·x - 8) ÷ 2 (division property)
y = 2·x - 4
The above equation is the same as the first two equations, therefore, the equations are the same
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a firm in a purely competitive industry is currently producing 1,000 units per day at a total cost of $700. if the firm produced 800 units per day, its total cost would be $450, and if it produced 500 units per day, its total cost would be $425.
a firm in a purely competitive industry is currently producing 1,000 units per day at a total cost of $700 then average total cost is $ 0.61
The average total cost is calculated as the total cost divided by the number of outputs. The firm's ATC at these three levels of production will be:
1. 1,000 units per day at a total cost of $700.
ATC = Total cost/output
ATC = $700/1000
ATC = $0.58
2. If the firm produced 500 units per day, its total cost would be $450.
ATC = Total cost/output
ATC = $450/500
ATC = $0.45
3. If it produced 700 units per day, its total cost would be $425.
ATC = Total cost/output
ATC = $425/700
ATC = $0.61
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17. Differentiate
X^2/(2x+1)
with respect to x
Answer:
cheese is cheese
Find an equation in standard form for the ellipse graphed below.
The equation of the ellipse in the graph, with center at (0, 0), and semi major and minor axis of 3 and 2 can be presented as follows;
[tex]\dfrac{x^2}{2^2} +\dfrac{y^2}{3^2 } = 1[/tex]
What is the locus of an ellipse?An ellipse is the locus of a point that moves such that the sum of the distance from two points is constant.
The standard form of the equation of an ellipse can be presented as follows;
[tex]\dfrac{(x - h)^2}{b^2} + \dfrac{(y - k)^2}{a^2} = 1[/tex]
Where;
(h, k) = The coordinates of the center of the ellipse
a = The semi major axis
b = The semi minor axis
From the attached graph the coordinates of the center of the ellipse is; (0, 0)
The semi major axis, a = 3
The semi minor axis, b = 2
Therefore;
[tex]\dfrac{(x - 0)^2}{2^2} + \dfrac{(y - 0)^2}{3^2} = 1[/tex]
The equation of the ellipse in standard form is therefore;
[tex]\dfrac{x^2}{2^2} + \dfrac{y ^2}{3^2} = 1[/tex]
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Use cylindrical coordinates.Evaluatex2 dV,iiintegral.gifEwhere E is the solid that lies within the cylinderx2 + y2 = 4,above the planez = 0,and below the conez2 = 16x2 + 16y2.
The value of the integral ∫x²dV using cylindrical coordinates is 512π / 3 .
In this case, the solid is positioned between the cylinder x² + y² = 4 and will be evaluated by using the cone z²= 16x² + 16y² .
Cylindric coordinates will be used to calculate this integral [tex]\int\limits_e {x^2} \, dx[/tex].
The distance from the origin to the point (x, y, 0) and the angle the point (x, y, 0) makes with the x-axis, respectively, are provided by the formulas.
x = r cos θ
y= r sin θ
With these coordinates, we shall characterize the solid E.
The boundary is then x² + y² = r²
The boundary also becomes r² = 4 or ( 0 ≤ θ ≤ r² )
Again z = 16r²
The original integral must now be translated into terms of these new coordinates. It is necessary to multiply the function by the Jacobian of the change in coordinates in order to ensure that the result remains the same. The value for the cylindric coordinates is r. Then
[tex]\int_ex^2 dx = \int\limits^{2\pi}_0\int\limits^2_0\int\limits^{16r^2}_0 r(r^2cos^2\theta)dzdrd\theta[/tex]
[tex]=\int _0^{2\pi }\int _0^216r^5\cos ^2\theta drd\theta[/tex]
[tex]=\int _0^{2\pi }\frac{512}{3}\cos ^2\theta d\theta[/tex]
= 512/3 π
Hence the volume of the solid that is enclosed by the integral is given by 512/3 π .
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A hypothesis test was used to test the hypothesis that people with a significant other are happier on average than people without. The P-value was 0.07 and the level of significance used was 0.1. Then there is sufficient evidence to conclude that, on average, people witha significant other are happier than single people. Hint Textbook Pages True False
True, A P-value of 0.07 is less than that significance requirement of 0.1, suggesting that there is sufficient evidence to conclude that people who have a significant other are happier than single people.
The hypothesis being examined was that those who have a significant other are happier on average than those who do not. To test this hypothesis, data from a sample size of persons were collected and evaluated to compute the P-value.
The P-value of 0.07 was determined to be less than the level of significance established at 0.1, implying that there is sufficient evidence to support the hypothesis that persons with a significant other are happier on average than solitary people.
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An important measure of location for categorical data is the mean b. median c.mode d. margin
An important measure of location for categorical data is the mode.
While the mean and median can only be determined for numeric data, the mode can be used to describe categorical variables. The mode's principal benefit as a gauge of central tendency is this. When continuous or discrete variables are expressed as intervals, it is also helpful.
The mode represents the value that occurs most often in a dataset.
A dataset can have no mode (if no value repeats), one mode, or multiple modes.
A set of data values' mode is the value that appears the most frequently. The value x (i.e., X = x) at which the probability mass function takes its maximum value is known as the mode if X is a discrete random variable. In other words, it is the value that will be sampled most frequently.
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a university charges students $2,300 less for tuition each year to encourage them to stay in school. the tuition for freshman year is $34,000. write a regression equation for this formula, with y
The regression equation of the formula regarding tuition will be given as y = 34000 - 2300x.
Regression method of writing an equation is used to show relation between two variables. The two variables include an independent variable and a dependent variable. The dependent variable is related to the independent variable and their relation and changes can be shown with the help of regression model. According to the question
the charge for tuition = $32000
Charge deduced from tuition per year = $2300
So we assume the tuition cost as y and the number of years as x.
The regression equation will be
y = 34000 - 2300x
where y is the tuition cost and x is the number of years in school and y is dependent variable and x is independent variable.
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Choose the correct answer below
Answer: B. Angle Bisector
Why: the line from D to be is intersecting or bisecting the 90 degree angle
from a population with a standard deviation of 35, a sample of 150 items is selected. at 95% confidence, what is the margin of error for the population mean? round your answer to three decimal places.
The margin of error for the population mean is 5.601
What does the term "margin of error" mean?
Your results will deviate by how many percentage points from the actual population value, according to your margin of error. It is described as a very small percentage that is allowed for error in calculations.
Given c = 0.95
The significance level is obtained as follows:
alpha = 1 - c
alpha = 1 - 0.95
alpha = 0.05
Also, it is given that n = 150 and sigma = 35 .
The critical value of Z distribution at 0.05 level of significance can be computed in MS Excel using + NORMS INV (alpha/2) function as follows:
Thus, [tex]Z_{0.005/2}=1.96[/tex]
Now, the margin of error can be computed as follows: ME = Critical Value x Standard Error
[tex]Z_{0.005/2}*\frac{sigma}{\sqrt{n} } \\= 1.96 * \frac{35}{\sqrt{150} } \\= 5.601[/tex]
Thus, the margin of error for the population mean is 5.601
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true or false? when the direction of the bias is toward the null, it means that the error causes the true measure of association to be overestimated.
it is false that that when the direction of bias is towards love it means that the error causes the true measure of association to be overestimated
A Measurement process is biased if it systematically overstates or understates the true value of the measurement
Systematic error due to difference in accuracy or completeness of recall to memory of past or experience is the most associated with recall bias.
Positive association is biased toward the null null value it means that the error causes the true value of association to be underestimated
but in the given given question the statement states that when the direction of the bias is toward the null it means that the error causes the true measure of association to be overestimated which is false
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wyatt can husk at least 12 dozen ears of corn per hour and at most 18 dozen ears of corn per hour. based on this information, what is a possible amount of time, in hours, that it could take wyatt to husk 72 dozen ears of cor
The possible amount of time that it could take Wyatt to husk 72 dozen ears of corn is 4 to 6 hours.
What are time and work?
Time is the span of any action or work that occurs or is ongoing. Work is a task or series of activities carried out to accomplish a specific goal.
Given, Wyatt can husk anywhere from 12 to 18 dozen ears of corn per hour.
Thus, to find the time taken to husk 72 dozen ears of corn,
the maximum time = 72/12 =6 hours
And, the minimum time = 72/18 =4 hours
Thus, depending on his speed, Wyatt takes anywhere from 4 to 6 hours to husk 72 dozen ears of corn.
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7-radical 7 over10+radical 3
The simplified expression is [tex]\frac{70-7\sqrt{3}-10\sqrt{7}+\sqrt{21}}{97}[/tex].
What is an algebraic expression?In mathematics, an expression that incorporates variables, constants, and algebraic operations is known as an algebraic expression.
The given statement is "7-radical 7 over10+radical 3".
Write the statement in mathematical form and simplify:
[tex]\frac{7 - \sqrt{7}}{10 + \sqrt{3}}\\\\\frac{7 - \sqrt{7}}{10 + \sqrt{3}}\times\frac{10 - \sqrt{3}}{10 -\sqrt{3}}\\\\\frac{(7 - \sqrt{7})(10-\sqrt{3})}{100-3}\\\\\frac{70-7\sqrt{3}-10\sqrt{7}+\sqrt{21}}{100-3}\\\\\frac{70-7\sqrt{3}-10\sqrt{7}+\sqrt{21}}{97}[/tex]
Hence, the simplified expression is [tex]\frac{70-7\sqrt{3}-10\sqrt{7}+\sqrt{21}}{97}[/tex].
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How many solutions does 2(3x+8)=2x+16+14 have
Answer: One solution
Step-by-step explanation:
6x+16=2x+30
4x=14
x=7/2
for the given scenario, determine the type of error that was made, if any. (hint: begin by determining the null and alternative hypotheses.) a new whitening toothpaste advertises four shades as the mean number of shades the toothpaste whitens your teeth. one user claims that the mean number of shades the toothpaste whitens your teeth is less than four shades. the user conducts a hypothesis test and fails to reject the null hypothesis. assume that in reality, the mean number of shades the toothpaste whitens your teeth is three shades. was an error made? if so, what type?
Yes there was an error made and it is a type II error
What is type i and ii error in Hypotheses testing?
A Type I mistake in statistics is a false positive finding, whereas a Type II error is a false negative finding.
The possibility of making these mistakes is inherent in hypothesis testing since making a statistical choice always entails some level of uncertainty.
The significance level, or alpha (), determines the likelihood of a Type I mistake, whereas beta () determines the likelihood of a Type II error. These dangers can be reduced by carefully designing the layout of your study.
Comparison of Type I and Type II errors
Considering your minor symptoms, you decide to get checked for COVID-19. There are two mistakes that could happen:
False positives of type I are when a test indicates you have a coronavirus when you don't.
False negative type II errors occur when the test results indicate that you don't have coronavirus but in fact you have.
The null and alternate hypotheses are provided below for the scenario:
H0: The average amount of tooth whitening achieved by toothpaste is four shades.
Ha: The average amount of colors your teeth lighten after using toothpaste is less than four.
H0: µ = 4
Ha: µ < 4
While we reject the null hypothesis when it is true, we made a type I error, according to the definition.
The failure to reject the null hypothesis when the null hypothesis is false is what is referred to as a type II error .
In the hypothetical situation, it is said that the average number of shades that toothpaste whitens teeth is three. This implies,
There are less than four hues. This proves that the null hypothesis is untrue.
This indicates that when the null hypothesis is false, we are unable to reject it.
It is a type II error as a result.
Yes, a type II error.
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Mr. Brown is making a total of n wooden frames. If he has made two-thirds of them so far, what would be an expression to represent the number of frames he has left to make?
An expression that would represent the number of frames he has left for him to make would be = X = n - ⅔.
What is a fraction?A fraction is an expression that is used to represent the part of a whole structure or an object such as the wooden frame.
The total number of wooden frames to be made= n.
The number of frames that Mr. Brown has made= ⅔
The number that is left to be made = X
But, n = ⅔ + X
To find X, make X the subject of formula;
X = n - ⅔.
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How many times can 24 go into 528
Answer:
22
Step-by-step explanation:
Factor this expression by dividing by the GCF first.
3n + 18
Answer:
3(n+6)
Step-by-step explanation:
3n+18= 3(n+6)