Answer:
787.5 is the answer.
Step-by-step explanation:
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the value added and subtracted from a point estimate in order to develop an confidence interval of the population parameter is known as the
The margin error is the amount that is added to and subtracted from a point estimate in order to create a confidence range for the population parameter.
The margin error, or error rate, in statistics refers to how inaccurate survey results utilizing random samples are. A larger statistical margin of error indicates a decreased likelihood of relying on a survey's or poll's results, indicating a decreased level of trust in the results' capacity to fairly represent a community. It is an essential tool for market research since it demonstrates the level of trust that should be placed by the researchers in survey results.
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what is the property of 7/9 * 1 = 7/9
Answer:
identity property of multiplication (multiplying a number by one will result in that number)
Step-by-step explanation:
On a coordinate plane, 2 quadrilaterals are shown. Quadrilateral Q R S T has points (negative 1, 0), (5, 0), (3.5, negative 6) and (negative 2.5, negative 6). Quadrilateral Q prime R prime S prime T prime has points (negative 1, 2), (1, 2), (0.5, 0), and (negative 1.5, 0).
Quadrilateral QRST is dilated and translated to form similar figure Q'R'S'T'. What is the scale factor for the dilation?
Based on the calculations, the scale factor for this dilation is equal to 1/3.
How to determine the scale factor for this dilation?First of all, we would use the distance formula to find the length of side QR and Q'R' as follows:
Distance = √[(x₂ - x₁)² - (y₂ - y₁)²]
Substituting the given points into the formula, we have;
Distance QR = √[(5 - (-1))² + (0 - 0)²]
Distance QR = √[(5 + 1)² + (0)²]
Distance QR = √[6² + 0]
Distance QR = √36
Distance QR = 6 units.
For side Q'R', we have:
Distance Q'R' = √[(1 - (-1))² + (2 - 2)²]
Distance Q'R' = √[(1 + 1)² + (0)²]
Distance Q'R' = √[2² + 0]
Distance Q'R' = √4
Distance Q'R' = 2 units.
Now, the scale factor for this dilation is given by:
Scale factor = Q'R'/QR
Scale factor = 2/6
Scale factor = 1/3.
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Answer:
Step-by-step explanation:
its 1/3
Function g is the result of these transformations on the parent sine function: vertical stretch by a factor of 3 horizontal shift left units vertical shift down 4 units Substitute the values of A, C, and D to complete the equation modeling function g
The equation modeling function g after the given transformations on the parent sine function is:
g of (x) = A x sine(C(x minus D))+k
where A is the vertical stretch factor, C is the reciprocal of the horizontal stretch factor, D is the horizontal shift, and k is the vertical shift.
Substituting the given values, we get:
g of (x) = 3*sine((1/1)(x+1))+(-4)
Simplifying further, we get:
g of (x) = 3*sine of (x+1)-4
Therefore, the equation modeling function g is g of (x) = 3*sine(x+1)-4 after the given transformations on the parent sine function.
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(2). Consider the LP below. The BFS ("corners") are (0,0)(0,4)(1,4)(3,2)(3,0). The optimal solution is at x
1
=3 and x
2
=2.
maxz=2x
1
+x
2
s.t.
x
1
+x
2
x
1
x
2
x
1
,x
2
≤5
≤3
≤4
≥0
(a). What is the range of c
1
the objective coefficient of x
1
(currently 2 ) for which this BFS remains optimal: (b). What is the range of b
2
the right hand side of the second constraint (currently 3 ) for which this BFS remains optimal: (c). What is the dual price of the second constraint?
To keep the BFS optimal, we can increase c1 up to a value where the shadow price (λ) is positive. If we increase c1 beyond this value, the shadow price will become negative and the BFS will no longer be optimal.
(a). To determine the range of c1, the objective coefficient of x1, for which this BFS remains optimal, we can use the concept of shadow prices. The shadow price of a variable represents the rate of change in the objective function value with respect to a one-unit increase in the right-hand side of the corresponding constraint.
Since the current optimal solution is at x1 = 3, we need to evaluate the shadow price of the first constraint at this solution. Let's assume the shadow price of the first constraint is denoted by λ.
The first constraint is: x1 + x2 ≤ 5
To keep the BFS optimal, we can increase c1 up to a value where the shadow price (λ) is positive. If we increase c1 beyond this value, the shadow price will become negative and the BFS will no longer be optimal.
(b). Similarly, to determine the range of b2, the right-hand side of the second constraint, for which this BFS remains optimal, we need to evaluate the shadow price of the second constraint. Let's assume the shadow price of the second constraint is denoted by μ.
The second constraint is: x1 + x2 ≤ 3
To keep the BFS optimal, we can increase b2 up to a value where the shadow price (μ) is positive. If we increase b2 beyond this value, the shadow price will become negative and the BFS will no longer be optimal.
(c). The dual price of the second constraint represents the rate of change in the objective function value with respect to a one-unit increase in the right-hand side of the second constraint. Since the optimal solution remains the same, the dual price of the second constraint remains the same as well.
Therefore, the dual price of the second constraint will be the same as the shadow price (μ) calculated in part (b).
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If KLM = XYZ dtermine the corredponding congruent sides and angles of
The angle KLM is congruent to angle XYZ, LMK is congruent to YXZ, and MKL is congruent to ZXY.
If KLM is congruent to XYZ, this means that they have the same size and shape.
To determine the corresponding congruent sides and angles, we need to compare the sides and angles of each triangle.
Starting with the sides, we can use the corresponding letters to identify which sides are congruent.
In this case, K corresponds to X, L corresponds to Y, and M corresponds to Z.
Moving on to the angles, we can use the same letters to identify which angles are congruent. Angle K corresponds to angle X, angle L corresponds to angle Y, and angle M corresponds to angle Z.
Therefore, angle KLM is congruent to angle XYZ, angle LMK is congruent to angle YXZ, and angle MKL is congruent to angle ZXY.
It is important to note that congruent triangles have more than just corresponding congruent sides and angles.
They also have corresponding congruent medians, altitudes, and perpendicular bisectors.
In summary, if KLM is congruent to XYZ, then we can determine the corresponding congruent sides and angles by comparing the sides and angles with the same corresponding letters.
Identify corresponding sides: In congruent triangles, corresponding sides are also congruent. So, side KL corresponds to side XY, side LM corresponds to side YZ, and side KM corresponds to side XZ.
In summary, when triangles KLM and XYZ are congruent, the corresponding congruent sides and angles are as follows:
Angle K ≅ Angle X
Angle L ≅ Angle Y
Angle M ≅ Angle Z
Side KL ≅ Side XY
Side LM ≅ Side YZ
Side KM ≅ Side XZ
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choose an american adult at random. the probability that you choose a woman is 0.52. the probability that the person you choose has never been married is 0.25. the probability that you choose a woman who has never been married is 0.11. the probability that person you choose is either a woman or has never been married (or both) is therefore about a. 0.77 b. 0.66 c. 0.44 d. 0.38
Using probability of union set,
the probability that person you choose is either a woman or has never been married is 0.66..
We have given that
If X be random variable that an American adult selected.
Assume that
A : selected adult is a women
B : selected adult has never married
Probability that you choose a woman, P(A) = 0.52
Probability that the person you choose has never been married , P(B) = 0.25
Probability that you choose a woman who has never been married , P(A∩B) = 0.11
we have to calculate probability that person you choose is either a woman or has never been married, P(A∪B)
Using the formula,
P(A∪B ) = P(A) + P(B) - P(A∩B)
pluging all known values in above formula we get
=> P(A∪B ) = 0.52 + 0.25 - 0.11
=> P(A∪B) = 0.77 - 0.11 = 0.66
Hence, the required probability is 0.66..
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Help..do not get me wrong..i have to pass this..
Answer:
Step-by-step explanation:
9/10 is equal to 18/20
3/4 is equal to 15/20
3/5 is equal to 12/20
9/20 is equal to 9/20
The next answer is 6/20 which is equivalent to 3/10
assume the initial velocity is 60 feet/second. what is the maximum horizontal distance possible and at what angle does this occur
Answer:
h = 112.5 feets
Step-by-step explanation:
The equation for horizontal distance "h" in feet of a projectile with initial velocity v₀ and initial angle theta is given by :
\(h=\dfrac{v_o^2}{16}\sin\theta\cos\theta\)
We know that, \(2\sin\theta\cos\theta=\sin2\theta\)
So,
\(h=\dfrac{v_o^2}{32}\sin2\theta\)
Now we need to find the maximum horizontal distance possible and at what angle does this occur.
For maximum distance angle should be 45 degrees. Som,
\(h=\dfrac{60^2}{32}\sin2(45)\\\\h=112.5\ \text{feet}\)
So, 112.5 feets is the maximum possible distance.
build an avl tree from the following values, which value(s) are identified as an alpha node? 35, 49, 22, 27, 64, 60
TheThe AVL tree built from the given values (which are 35, 49, 22, 27, 64, 60) is identified as an alpha node at value 49.
To build an AVL tree, we start by inserting the values in the order given: 35, 49, 22, 27, 64, 60. As we insert the values, the AVL tree automatically balances itself to maintain the AVL property. After inserting all the values, the resulting AVL tree would have nodes for each value.
Among these values, the alpha node is identified as the node with the value 49. The alpha node is a special node in the AVL tree that may require additional balancing operations to maintain the balance factor. In this case, the value 49 is identified as the alpha node in the constructed AVL tree.
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A room is 14ft by 20ft. It needs to be painted. The ceiling is 8ft above the floor. There are two windows in the room, each one is 3ft by 4ft. The door is 2.5ft by 6.5ft.
From the given data of room ,ceiling , windows and door , the area of the four walls and ceiling to be painted is equal to 783.75 ft².
As given in the question,
Room is 14ft by 20 ft
Height of the room = 8ft
Two windows are of 3ft by 4ft
Door is 2.5ft by 6.5ft
Area of the four walls = 2 (14 × 8) + 2(20×8)
= 224 +320
= 544ft²
Area of the ceiling = 14 × 20
= 280ft²
Area of two windows = 2(3×4)
=24ft²
Area of the door= 2.5 ×6.5
=16.25ft²
Total area to be painted = ( 544 + 280 -24-16.25 )
= 783.75 ft²
Therefore, the total area of the four walls and ceiling to be painted is equal to 783.75 ft².
The complete question is :
A room is 14ft by 20ft. It needs to be painted. The ceiling is 8ft above the floor. There are two windows in the room, each one is 3ft by 4ft. The door is 2.5ft by 6.5ft.
a. find the total area of the four walls and ceiling to be painted?
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Define a variable, set up an equation, then solve.
A moving truck costs $18 per hour to use plus a $44 service fee. If the total bill was $152, how many hours was the truck rented?
Using production and geological data, the management of an oil company estimates that of will be purced from a producing fold at a rate given by the following 80 R() 1*8** Ost 15 Act) is the rate of production (in thousands of barres per your) t years after pumping begins. Find the area between the graph of and the face over the interval (7,421 and interpret the results The area is approximately square unita (Round to the nearest integer as needed)
Using production and geological data, the management of an oil company estimates that of will be purced from a producing fold at a rate given by the following 80 R() 1*8** Ost 15 Act) is the rate of production (in thousands of barres per your) t years after pumping begins. the approximate area of 189 square units represents an estimate of the total oil production in thousands of barrels over the given time interval.
To find the area between the graph of R(t) = 1 - 8^(-0.15t) and the x-axis over the interval (7, 421), we need to compute the definite integral of R(t) with respect to t over that interval.
The integral can be expressed as follows:
∫[7 to 421] R(t) dt = ∫[7 to 421] (1 - 8^(-0.15t)) dt.
To solve this integral, we can use integration techniques such as substitution or integration by parts. However, given the complexity of the integrand, it is more appropriate to use numerical methods or calculators to approximate the value.
Using numerical methods, the calculated area is approximately 189 square units.
Interpreting the results, the area between the graph of R(t) and the x-axis over the interval (7, 421) represents the cumulative production of the oil field during that time period. Since the integrand represents the rate of production in thousands of barrels per year, the area under the curve gives an estimate of the total number of barrels produced during the time span from 7 years to 421 years.
Therefore, the approximate area of 189 square units represents an estimate of the total oil production in thousands of barrels over the given time interval.
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Statista reports that the average monthly lease payment for an automobile is falling in the United States (Statista. Com), but does this apply to all classes of automobiles?
The Statista report does not apply to all classes of automobiles falling in the United States.
The classes of the automobiles differ from each other. The selling production, the mean average, the lease payment and selling cost and other such aspect from class to class in all the sections. Statista report was only made for the average monthly lease payment for an SUV automobile or a specific section to be undertaken the report. At some length the procedure, formulae, and the format to make a report does apply to all the classes of Automobiles that falls in the United States.
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Solve x to the nearest tenth
The value of x is 4.47 units
In the given figure, there are two right angle triangle, to find the value of x we have to solve each triangle using the Pythagorean theorem.
Consider the bottom triangle
Base of the triangle = 6 units
The hypotenuse of the triangle = 9 units
Apply the Pythagorean theorem
The third side of the triangle = \(\sqrt{9^2-6^2}\)
= \(\sqrt{81-36}\)
= \(\sqrt{45}\) units
Similarly consider the top triangle
The base of the triangle = 5 units
The hypotenuse of the triangle = \(\sqrt{45}\) units
The third side of the triangle = \(\sqrt{\sqrt{45}^2- 5^2}\)
= \(\sqrt{45-25}\)
= \(\sqrt{20}\)
= 4.47 units
Hence, the value of x is 4.47 units
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someone please answer these 3 questions
Answer:
5 prism all have same volume
Step-by-step explanation:
A student was asked to simplify the expression 2(x+3)+(4x−8)−7x .
Answer:
-x -2
Step-by-step explanation:
1- Apply the Distributive Property
2- Calculate the product or quotient
3- Determine the sign
4- Reorder and gather like terms
Collect coefficients of like terms
Calculate the sum or difference
What is 2 1/2+1 1/3x<6? Please hellllppppp!!!!
Can you please help me find a sequence for the answer and steps
Answer:
2, 148
Step-by-step explanation
If you look at each figure there are 4 quadrants in the squares and in each quadrant there is a specific amount of shade box. So in figure 1 each quadrant has 3 shaded blocks. In figure 2 there are 4 shaded block in each quadrant. You add 2 to the figure number. So if we jump to the question figure 35 will have 37 shaded blocks in each quadrant. Meaning 37 X 4 (4 is the amount of quadrants) = 148.
The table shows the number of students that are enrolled in Geometry at Eastlake High School If the pattern continues, how many students would you expect to be enrolled in 2005?
Answer:
Step-by-step explanation:
HELP ASAP RN PLEASE!!
200 people got an email 37 people clicked on it how do you get 18.5%
Answer:
37/200
Step-by-step explanation:
Event/Sample Space = .185 = 18.5%
Answer:
Step-by-step explanation:
If 37 people out of 200 people opened an e-mail, you can write it as 37/200.
The number above the bar is the numerator: 37
The number below the bar is the denominator: 200
Divide the numerator by the denominator to get fraction's value:
Val = 37 ÷ 200
Val = 0.185
To calculate the percent value:
0.185 = (Calculate fraction's value.)
0.185 × 100/100 =
(0.185 × 100)/100 = (Multiply that number by 100.)
18.5/100 =
18.5%; (Add the percent sign % to it.)
So that's how you get 18.5%
please help its math!!! will give brainly and more points if correct please I need help
The equations of four lines are given. Identify which lines are perpendicular.
Line 1: y+8x=−5
Line 2: x+16y=−5
Line 3: y=−6x−7
Line 4: y+3=18(x−1)
Lines 2 and 3 are perpendicular.
Lines 1 and 2 are perpendicular.
All four lines are perpendicular.
Lines 1 and 4 are perpendicular.
Answer:
None of the options match
Step-by-step explanation:
First let's check option 1: lines 2 and 3.
line 2 in mx+b form: y=-1/16x -5
line 3, already in mx+b form: y=-6x-7
if it was perpendicular, the slopes should have been -1/16 and 16 or -6 and 1/6.
now for the 2nd option: lines 1 and 2.
line 1 in mx+b form: y=-8x-5
line 2 in mx+b form: y=-1/16x-5
Again, the slopes do not match, they should have been -8 and 1/8 or -1/16 and 16.
For the 3rd option: all lines
this is obviously wrong since lines 1, 2 and 2, 3 are not perpendicular themselves. No need to bother checking this option.
Lastly, 1 and 4.
line 1 in mx+b form: y=-8x-5
line 4 --> y+3=18x-18 --> y=18x-21
This is also wrong since the slopes should have been -8 and 1/8 or 18 and -1/18.
To conclude, I think the answer is none. None of the combinations on here are perpendicular anyways...
Answer:
D
Step-by-step explanation:
We have the four lines:
\(\displaystyle\text{Line 1: }y+8x&=-5 \\\\ \text{Line 2: } x+\frac{1}{6}y&=-5\\\\\text{Line 3: } y&=-6x-7 \\\\\text{Line 4: } y+3&=\frac{1}{8}(x-1)\)
Remember that for two lines to be perpendicular, their slopes are negative reciprocals of each other.
So, let’s determine the slope of each line.
For Line 1, we can rewrite our equation as:
\(y=-8x-5\)
So, the slope of Line 1 is -8.
We can rewrite Line 2 as:
\(\displaystyle \begin{aligned} \frac{1}{6}y&=-x-5\\y&=-6x-30\end{aligned}\)
So, the slope of Line 2 is -6.
The slope of Line 3 is also -6.
And the slope of Line 4 is 1/8.
So, the slopes of perpendicular lines must be negative reciprocals.
The negative reciprocal of -8 (slope of Line 1) is 1/8. We multiply by a negative and then take the reciprocal.
Since the slope of Line 4 is 1/8, this means that Lines 1 and 4 are perpendicular.
For Lines 2 and 3, they have the same slope, not negative reciprocals of each other.
So, they will instead of parallel instead of perpendicular.
And Line 1 is perpendicular only to Line 4, and no other line.
Therefore, our answer is D.
pls help if you can asap!!!!
Answer: x= 6
Step-by-step explanation:
Since the shape is a parallelogram, the angles will either be equal to each other or add up to 180.
You can see they do not look the same so they add up to equal 180
12x + 3 +105 = 180
12x + 108 = 180
12x = 72
x = 6
in 1970, 590 students among 1000 randomly selected college freshmen thought that capital punishment should be abolished. in 2005, 350 students among 1000 randomly selected college freshmen thought that capital punishment should be abolished. what is the two-sample z test statistic for evaluating the null hypothesis that the percentage of students who support capital punishment did not change from 1970 to 2005? round your answer to two decimal places.
The two-sample z-test statistic for evaluating the null hypothesis that the percentage of students who support capital punishment did not change from 1970 to 2005 is -4.08 (rounded to two decimal places).
To calculate the two-sample z-test statistic, we need to compare the proportions of students who support capital punishment in 1970 and 2005. The null hypothesis states that the percentage of students who support capital punishment did not change.
Let p1 be the proportion of students who support capital punishment in 1970, and p2 be the proportion in 2005. We can calculate the sample proportions as p1 = 590/1000 = 0.59 and p2 = 350/1000 = 0.35.
The formula for the two-sample z-test statistic is given by z = (p1 - p2) / sqrt((p(1 - p)(1/n1 + 1/n2))), where p is the pooled proportion and n1 and n2 are the sample sizes.
To calculate p, we compute the pooled proportion as p = (p1n1 + p2n2) / (n1 + n2) = (0.591000 + 0.351000) / (1000 + 1000) = 0.47.
Substituting the values into the formula, we have z = (0.59 - 0.35) / sqrt((0.47*(1 - 0.47)(1/1000 + 1/1000))) = -4.08.
Therefore, the two-sample z-test statistic for evaluating the null hypothesis is -4.08 (rounded to two decimal places).
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Select the correct answer from each drop-down menu. five people buy individual insurance policies. according to the research, the probability of each of these people not filing a claim for at least 5 years is . the probability that all 5 have not filed a claim after 5 years is , and the probability that exactly 3 will have filed a claim after 5 years is .
The correct answer is 0.033.
1) P(after 5 years, all 5 file no claim) \(= 0.132\)
2) P(exactly three claims filed after five years) \(= 0.033\)
Explanation in detail:
1) We're told that the chances of each of these folks not submitting a claim for at least 5 years are 2/3.
As a result, for all five of them
P(all 5 file no claim after 5 years) = \((2/3)^5 = 0.1317 ≈ 0.132\) is the probability.
2) Because the chance of each not submitting a claim in the previous 5 years is 2/3,
After 5 years, the likelihood of each making a claim is \(1 - 2/3 = 1/3\).
As a result, P(exactly three file claim after five years) \(= (1/3)^3 ≈ 0.037\).
What is probability ?
Probability is synonymous with possibility. It is a mathematical discipline that deals with the occurrence of a random event. The value ranges from zero to one. Probability has been introduced in mathematics to predict the likelihood of occurrences occurring. Probability is defined as the degree to which something is likely to occur. This is the fundamental probability theory, which is also utilized in probability distribution, in which you will learn about the possible results of a random experiment. To determine the likelihood of a particular event occurring, we must first determine the total number of alternative possibilities.So the more about probability visit.
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The volume of a cube is 343 cubic meters. what is the length of one of the sides?
a farmer wishes to enclose two identical adjoining rectangular pens against the side of a large barn. she wants each pen to have an area of 750 square feet and will use the barn as one side of the enclosure. what is the least amount of fencing needed (in feet) to create the two pens?
Using basic geometry and area formula for calculation of length, Apply fencing on only 3 side , The answer is 109.54 feet.
What do you mean by geometry?A subfield of mathematics called geometry examines the dimensions, placements, angles, and sizes of objects.
What is a rectangle and it's formula for area?A plane shape, as opposed to a square, with four straight sides and four right angles, particularly one with uneven neighboring sides.
Area of rectangle is:
A= l x b
area=750 square feet.
for attaining minimum area , these area must be fitted in square,
so, \(l = \sqrt {750}\)
=27.38 feet
since, one side is taken by barn, l should be extended 4 times, 2 on 1 side and 2 on sides each.
Total length of fence = 4 * 27.38
= 109.54 feet
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help dont understand like its confusing one minute u add then substract like...
Answer:
53 degrees
Step-by-step explanation:
< will be angle UwU (using pc)
m<JKM = 151 degrees is the total angle combining m<1 and M<2
therefore, we subtract m<2 from m<JKM to find m<1
Here is the equation:
m<JKM = m<1 + m<2
151 = m<1 + 98 (substitute)
53 = m<1 (simplify the like term so we subtracted 98 on both sides)
hope this helps!
Find the missing angle measure.
52
Answer:
128
Step-by-step explanation:
Sum of interior angles of a 4 sided quadrilateral is 360.
90 + 90 + 52 + x = 360
232 + x = 360
x = 360 - 232
x = 128
merry christmas! my teachers gave me work. ill be happy if u help