a) The appropriate hypothesis testing are states as [tex]H_0 : p = 0.50[/tex]
[tex]H_a : p > 0. 50 [/tex]
b) The p-value for z-test is equals to the 0.000. Also, p-value < α.
c) Conclusion: Null hypothesis is rejected and there is evidence to support that more than 50% do not belief that such software unfairly targets students.
We have a sample of at an australian university that introduced the use of plagiarism-detection software.
Sample size = 178
Number of students who belief that such software unfairly targets student = 53
a) Null and alternative hypothesis are stated here as for right tailed t test.
[tex]H_0 : p = 0.05 [/tex]
[tex]H_a : p > 0.05[/tex]
sample proportion for students who does not belief that such software unfairly targets student [tex]\hat p = \frac {178- 53 }{178} [/tex] = 0.71
Now, test-statistic : [tex]t = \frac { \hat p - p} {\sqrt{ \frac{ p( 1- p)}{n}}}[/tex]
Substitute all the known values in above formula, [tex]= \frac {0.71 - 0.05} {\sqrt{ \frac{ 0.05( 1- 0.05)}{178}}}[/tex]
=> t = 41.25
b) Now, using Excel, the p-value for z
= 41.25 is 0.000. So, p-value < 0.05
Therefore, the Null hypothesis is rejected here.
c) Conclusion: there is evidence to support the claim that more than 50% do not belief that such software unfairly targets students.
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Complete question:
in a sample of 178 students at an australian university that introduced the use of plagiarism-detection software in a number of courses, 53 students indicated a belief that such software unfairly targets students. does this suggest that a majority of students at the university do not share this belief? test appropriate hypotheses at level 0.05.
a) State appropriate hypothesis
b) find p-value
c) draw conclusion
I NEED HELP ON THIS ASAP!!!
1. The numeric values of the function are given as follows:
x = -4, y = 1/16.x = -3, y = 1/8.x = -2, y = 1/4.x = -1, y = 1/2.x = 0, y = 1.2. As x approaches negative infinity, y approaches zero.
How to calculate the numeric value of a function or of an expression?To calculate the numeric value of a function or of an expression, we substitute each instance of any variable or unknown on the function by the value at which we want to find the numeric value of the function or of the expression presented in the context of a problem.
The numeric values for this problem are given as follows:
x = -4, y = 1/16, as 2^(-4) = 1/2^4 = 1/16.x = -3, y = 1/8, as 2^(-3) = 1/2^3 = 1/18.x = -2, y = 1/4, as 2^(-2) = 1/2^2 = 1/4.x = -1, y = 1/2, as 2^(-1) = 1/2^1 = 1/2.x = 0, y = 1, as 2^(0) = 1/2^0 = 1.Increasing the negative exponent, the number gets closer to zero.
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10. A cone has a Volume of 94.25cm ^ 3 If the radius of the cone is 3 cm, what is the height of the cone?
Answer:
10 cm
Step-by-step explanation:
V =1/3 x π x r² x h
94.25 =1/3 x π x 3² x h
94.25 ÷ 3π =h
so, h= 10 cm
I NEED HELP ON THIS ASAP!!!
The table for the function f(x) = 2ˣ should be completed as follows;
x -4 -3 -2 -1 0
f(x) 1/16 1/8 1/4 1/2 1
As x approaches negative infinity, f(x) decreases.
What is an exponent?In Mathematics, an exponent is a mathematical operation that is typically used in conjunction with an algebraic expression in order to raise a quantity to the power of another.
This ultimately implies that, an exponent is represented by the following mathematical expression;
bⁿ
Where:
the variables b and n are numerical values (numbers) or an algebraic expression.n is referred to as a superscript or power.By applying the negative power rule to the function based on each of the x-values, we have the following:
f(x) = 2⁰ = 1
f(x) = 2⁻¹ = 1/2
f(x) = 2⁻² = 1/2² = 1/4
f(x) = 2⁻³ = 1/2³ = 1/8
f(x) = 2⁻⁴ = 1/2⁴ = 1/16
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Simplify: 4 3/5x3=??
Answer:
69/5 or 13.8
Step-by-step explanation:
..…........
. A middle school teacher conducted a survey of the 8th grade class and found that 43 students were athletes and 19 of those students drink soda. There were 33 students that were not athletes, but drank soda. Last, they found that 22 students were not athletes and did not drink soda. Given this information, how many students don't drink soda
There are 46 students don't drink soda.
Let's use a Venn diagram to represent the information given in the problem:
Athletes
/ \
/ \
Soda / \ No Soda
/ \
/ \
/ \
----------------------------------------------
| |
| |
| |
Drink No Drink
| |
| |
| |
----------------------------------------------
| |
| |
| |
19 24
| |
| |
|
----------------------------------------------
| |
| |
| |
33 10
| |
| |
| |
----------------------------------------------
| |
| |
| |
24 22
| |
| |
| |
----------------------------------------------
The diagram, we can see that there are 24 students who drink soda and are athletes, 19 who drink soda but are not athletes, 33 who are not athletes but drink soda, and 22 who are neither athletes nor soda drinkers.
The number of students do not drink soda, we need to add the number of students who are athletes but do not drink soda to the number of students who are neither athletes nor soda drinkers:
Number of students who don't drink soda
= Number of athletes who don't drink soda + Number of students who are neither athletes nor soda drinkers
Number of athletes who don't drink soda = Total number of athletes - Number of athletes who drink soda = 43 - 19 = 24
Number of students who are neither athletes nor soda drinkers = 22
The number of students who don't drink soda is:
Number of students who don't drink soda = 24 + 22 = 46.
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Use the trading data for Friday, October 20 and Friday, October 27 to answer the questions. ( in the picture)
A) what was the difference between the high and low prices on October 20?
B) on October 27, what was the actual volume of discovery group shares posted? Write the volume in numerals.
C) at what price did discovery group clothes on October 19?
D) use the October 19 closing price from above and the October 20 opening price to find the difference in the prices as a percent increase. Round to the nearest hundredth place.
E) on October 21 discovery group announced that they would close one of their manufacturing plants. This resulted in a drop in their stock price. It closed at $32 express the number change from October 20 to October 21 as a percent rounded to the nearest tenth of a percent.
F) on October 28 discovery group announce that they would not be closing the plant this news cause the price of the stock to rise. It closed at $48.20 express the net change from October 27 to October 28 as a percent, rounded to the nearest tenth of a percent.
G) explain why 52 week high and 52 week low numbers are the same in both charts ?
H) examine the closing price of discover group on October 27 one year earlier one share closed at 30% higher than that amount, what was the closing price one year earlier?
a. The difference between the high and the low prices on October 20 was $3.33.
b. The actual volume of Discovery Group shares posted on October 27 was 23,600.
c. The closing price for Discovery Group on October 19 was $38.50
What was the percentage decrease?The percentage decrease is calculated below as follows:
closing price on October 19 = $38.50
the opening price on October 20 = $37.22
the percentage decrease in prices = (37.22 - 38.50) / 38.50
the percentage decrease in prices = -3.33% to the nearest hundredth
e. The net change = $32.00 - $38.50
The net change = -$6.50.
The percentage change = (-6.50 / 38.50) * 100
The percentage change = -16.9% to the nearest tenth percent
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3. What is the vertex of each quadratic function. a) y = (x + 3)² - 6 b) y = (x-7)² + 2 c) y = (x-4)²
The vertex of the quadratic functions are (-3, -6), (7, 2) and (4, 0).
Stating the vertex of the quadratic functionsThe vertex of a quadratic function in the form y = a(x - h)² + k is given by the point (h, k).
To find the vertex, we need to rewrite the quadratic function in this form by completing the square.
a) y = (x + 3)² - 6:
We can rewrite this equation as y = (x - (-3))² - 6, which is in the form y = a(x - h)² + k.
Therefore, the vertex is (h, k) = (-3, -6).
b) y = (x-7)² + 2:
We can rewrite this equation as y = (x - 7)² + 2, which is in the form y = a(x - h)² + k.
Therefore, the vertex is (h, k) = (7, 2).
c) y = (x-4)²:
We can rewrite this equation as y = (x - 4)² + 0, which is in the form y = a(x - h)² + k.
Therefore, the vertex is (h, k) = (4, 0).
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The lengths of the three sides are given for several right triangles. For each, write an equation that expresses the relationship between the lengths of the three sides. 5,2. 2360679775,5. 47722557505
An equation that expresses the relationship between the lengths of the three sides is a^2 + b^2 = c^2.
In a right triangle, the side opposite the right angle is called the hypotenuse, while the other two sides are called the legs.
The relationship between the lengths of the three sides in a right triangle is described by the Pythagorean Theorem, which states that the sum of the squares of the lengths of the legs equals the square of the length of the hypotenuse.
Mathematically, this can be represented as:
a^2 + b^2 = c^2
where a and b are the lengths of the legs, and c is the length of the hypotenuse.
For the given right triangle with lengths 5, 2.2360679775, and 5.47722557505, we can plug in the values of a, b, and c to get:
5^2 + 2.2360679775^2 = 5.47722557505^2
which simplifies to:
25 + 5 = 30
This equation is true, indicating that the given lengths do indeed form a right triangle according to the Pythagorean Theorem.
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There are 3 classes of 22 students making
Ice cream sundaes. A sundae can be
made using one of 3 syrups and one of 3
candy toppings. Each student makes one
sundae. Which expression can be used to
find the total number of sundaes made by
the students?
A 3x22
B 3 x 22
C 3x3x22
D 3³x9x22
The expression that can be used to find the total number of sundaes made by the students is option B, 3 x 22.
What is expression?In mathematics, an expression is a combination of variables, numbers, and mathematical operations that can be evaluated to produce a value. It can be as simple as a single number or variable, or it can be more complex and involve multiple variables and operations. Expressions can be used to represent a wide variety of mathematical concepts and relationships, and are an essential part of algebra, calculus, and other branches of mathematics.
According to given information:The number of sundaes that can be made by one student is 3 x 3 = 9 (since each student chooses one of 3 syrups and one of 3 candy toppings).
Since there are 22 students in each class, the total number of sundaes made by one class is 22 x 9 = 198. Since there are 3 classes, the total number of sundaes made by all the students is 3 x 198 = 594.
Therefore, the expression that can be used to find the total number of sundaes made by the students is option B, 3 x 22.
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(c) explain, in a few sentences, what causes a graph of a function in polar coordinates to pass through the origin. how is this different from what makes a graph of a function in rectangular coordinates pass through the origin?
the condition for a function's graph to pass through the origin in polar coordinates is that the function's value at θ=0 is equal to zero, while the condition for a function's graph to pass through the origin in rectangular coordinates is that the function's value at (0,0) is equal to zero.
How to solve the question?
In polar coordinates, a graph of a function passes through the origin if and only if the function's value at θ=0 is equal to zero. This is because the origin in polar coordinates represents the point (r=0, θ), where r is the distance from the origin and θ is the angle of the point with respect to the positive x-axis. When a function's value at θ=0 is equal to zero, it means that the point on the graph at θ=0 lies on the positive x-axis and has a distance of r=0 from the origin, which is the origin itself.
In contrast, a graph of a function in rectangular coordinates passes through the origin if and only if the function's value at (0,0) is equal to zero. This is because the origin in rectangular coordinates represents the point where the x and y axes intersect, and a point on the graph with coordinates (x,y) passes through the origin if and only if x=0 and y=0, which means the function's value at (0,0) is equal to zero.
In summary, the condition for a function's graph to pass through the origin in polar coordinates is that the function's value at θ=0 is equal to zero, while the condition for a function's graph to pass through the origin in rectangular coordinates is that the function's value at (0,0) is equal to zero.
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Please simplify the sum and show work and answer the questions in the picture below
The simplified form of the expression is written as 11x³ - 39x -2x²/(x²- 9)(x+ 3)
What are algebraic expressions?Algebraic expressions are simply described as expressions that are composed of terms, variables, constants, factors and coefficients.
These expressions are also made up of arithmetic operations such as addition, multiplication, division, subtraction, etc
From the information given, we have that;
x -2/x + 3 + 10x/x² - 9
Find the lowest common denominator and simplify
(x-2)(x² - 9) + (x-3)(10x) /(x²- 9)(x+ 3)
Now, expand the bracket, we get;
x³ - 9x - 2x² + 10x³ - 30x/(x²- 9)(x+ 3)
collect the like terms of the denominator and that of the numerator, we get;
11x³ - 39x -2x²/(x²- 9)(x+ 3)
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Question 6(Multiple Choice Worth 2 points)
(Comparing Data LC)
The histograms display the frequency of temperatures in two different locations in a 30-day period.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 14. A shaded bar stops at 10 above 60 to 69, at 9 above 70 to 79, at 5 above 80 to 89, at 4 above 90 to 99, and at 2 above 100 to 109. There is no shaded bar above 110 to 119. The graph is titled Temps in Sunny Town.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 16. A shaded bar stops at 2 above 60 to 69, at 4 above 70 to 79, at 12 above 80 to 89, at 6 above 90 to 99, at 4 above 100 to 109, and at 2 above 110 to 119. The graph is titled Temps in Desert Landing.
When comparing the data, which measure of center should be used to determine which location typically has the cooler temperature?
Median, because Desert Landing is symmetric
Mean, because Sunny Town is skewed
Mean, because Desert Landing is symmetric
Median, because Sunny Town is skewed
After comparing the data, a measure of variability for both sets of data to be utilised to find the place with the most stable temperature: C. Range, because Sunny Town is skewed.
What exactly is skewness?Skewness is a measure of the asymmetry of a box plot (box-and-whisker plot) or histogram in mathematics, and as such, a box plot (box-and-whisker plot) or histogram has a normal distribution when it is symmetrical.
We may rationally establish that Sunny Town's box plot (box-and-whisker plot) is distorted by closely inspecting it.
Conversely, the Desert Landing box plot (box-and-whisker plot) is symmetrical (vertical line dividing the box into two equal halves), which simply means that both whiskers on either side of the box plot (box-and-whisker plot) are roughly equal and symmetric.
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PLEASE HELP I NEED TO SUBMIT SOON!!
The missing measure of the square pyramid and the net would be 11.18 units.
The amount of wood that Dee needs to make the doghouse is 98 square feet of wood.
How to find the net ?The missing measure is the side of the pyramid and this can be found using the Pythagorean Theorem with 11 ft being the height of the triangle and 4/ 2 = 2 being one of the sides and the missing measure being the hypotenuse.
The side length is:
= √ (2 ² + 11²)
= √ ( 4 + 121)
= 11.18 units
To determine the amount of wood needed for Dee's doghouse, we need to calculate the surface area of the square pyramid using its net.
Calculate the area of all four triangular faces:
Total area of triangular faces = 4 x area of one triangular face = 4 x 20.5 = 82 square feet
Calculate the total surface area of the pyramid (net):
Total surface area = area of base + total area of triangular faces = 16 + 82 = 98 square feet
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A small can of beans is 3 in. high with a 1 in. radius and sells for $1.49. Which can of beans is a better deal?
a. 9 in. high; 3 in. radius; sells for $39.95
b. 3 in. high; 2. in. radius; sells for $5.96
c. 3 in. high; 3 in. radius; sells for $13.41
Therefore, can b and c are the same better deal since they have the same price per cubic inch using the volume of a cylinder.
Volume of a cylinder calculation.
To compare which can of beans is a better deal, we need to calculate the volume of each can and divide it by the price. The can with the highest volume per dollar is the better deal.
a) The volume of the can is V=πr²h=(3.14)(3²)(9)=254.34 cubic inches. The price per cubic inch is $39.95/254.34 = $0.157, rounded to three decimal places.
b) The volume of the can is V=πr²h=(3.14)(2²)(3)=37.68 cubic inches. The price per cubic inch is $5.96/37.68 = $0.158, rounded to three decimal places.
c) The volume of the can is V=πr²h=(3.14)(3²)(3)=84.78 cubic inches. The price per cubic inch is $13.41/84.78 = $0.158, rounded to three decimal places.
Therefore, can b and c are the same better deal since they have the same price per cubic inch.
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ruby is using the quadratic formula to solve a quadratic equation. which of the following is the next step for simplifying x=−6±85√2 responses
x=−3±8√5
x=−3±√5
x=−3±4√5
this is fully simplified.
Match each equation to the value(s) of x that make the equation true. Matching!
choices= (no real solution) (x=9) (x=3) (x= -7) (x-7)
A) 3(x-5) = 2(x-11)
B) 4(3x+7) -5 = 12x +8
C) 3(x+1) -2x = x+3
Matching of the equation will be:
A) x= -7
B) x= 3
C) x= 9
How to explain the equationAn equation simply has to do with the statement that illustrates the variables given. In this case, it is vital to note that two or more components are considered in order to be able to describe the scenario.
A) 3(x-5) = 2(x-11) has x= -7 as the solution.
B) 4(3x+7) -5 = 12x +8 has x= 3 as the solution.
C) 3(x+1) -2x = x+3 has x= 9 as the solution.
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How many green apples would james have if he ate 1 red apple and 2 green apples out of the 50 green apples he had got.
Answer:
48
Step-by-step explanation:
50 (total green apples) - 2 (green apples eaten) = 48 (green apples left)
What is the approximate solution to the equation 6e^4x — 3 = 21? a) 0.7945 b) 0 c) 0.1505 d) 0.3466
Answer: the answer is d) 0.3466.
Step-by-step explanation:
Starting with the equation:
6e^(4x) - 3 = 21
Add 3 to both sides:
6e^(4x) = 24
Divide both sides by 6:
e^(4x) = 4
Take the natural logarithm of both sides:
ln(e^(4x)) = ln(4)
Use the property of logarithms that ln(e^y) = y:
4x ln(e) = ln(4)
Simplify:
4x = ln(4)
Solve for x by dividing both sides by 4:
x = (1/4) ln(4)
Using a calculator, we get:
x ≈ 0.3466
Therefore, the answer is d) 0.3466.
An electrician is running wire from the electric box on a house to a utility pole 85 feet away. The angle of elevation to the connection on the pole is 17°. How much wire does the electrician need? (Round your answer to two decimal places.)
ft
The electrician needs approximately 296.26 feet of wire.
What is trigonometry?The links between triangle's sides and angles are studied in the mathematic discipline known as trigonometry. It entails an examination of triangle's angles, lengths, and areas as well as their angles' mathematical properties (such as sine, cosine, and tangent).
According to question:The situation described can be modeled as a right triangle, where the wire from the electric box to the pole is the hypotenuse, and the angle of elevation is one of the acute angles. Let x be the length of the wire needed in feet.
Using trigonometry, we can write:
sin(17°) = opposite / hypotenuse
where the opposite side is the height of the connection on the pole above the ground. We can solve for the hypotenuse (the length of wire needed) as follows:
hypotenuse = opposite / sin(17°)
To find the opposite side, we can use the fact that the angle of elevation is 17° and the distance from the pole to the point on the ground directly beneath the connection is 85 feet. This distance is the adjacent side of the triangle, so we can write:
tan(17°) = opposite / 85
Solving for the opposite side, we get:
opposite = 85 tan(17°)
Substituting this into the formula for the hypotenuse, we get:
hypotenuse = (85 tan(17°)) / sin(17°)
hypotenuse ≈ 296.26 feet
Therefore, the electrician needs approximately 296.26 feet of wire.
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The temperature on top of Mt. Katahdin dropped 25 degrees over 8 hours. On average, how much did the temperature change each hour? Represent your answer as a rational number.
Answer: To find the average change in temperature per hour, we need to divide the total change in temperature by the number of hours.
The temperature dropped 25 degrees over 8 hours, so the average change per hour is:
25 degrees / 8 hours = 3.125 degrees per hour
Therefore, the temperature on top of Mt. Katahdin dropped by an average of 3.125 degrees per hour.
Step-by-step explanation: The temperature on top of Mt. Katahdin dropped by an average of 3.125 degrees per hour.
find out the perimeter of the semicircle
take pie to be 3.142 and write down all the digits in the calculator
the radius of the semicircle is 11cm
Answer:
P = 11 + (1/2)π(11) = 11 + 5.5π = 28.279 cm
Letting π = 3.142:
P = 11 + (1/2)(3.142)(11) = 28.281 cm
Javier design a mosaic wall Mural using a 100 tiles in three different colors yellow blue and red if 64 of the tiles are yellow what percent of the tires are either red or blue
In the xy-plane, how many horizontal or vertical tangent lines does the curve xy2=2+xy have?
The curve xy²=2+xy has two horizontal or vertical tangent lines, namely x = 2/3 and y = -1/3, and x = -1/3 and y = 1/3.
To find the horizontal or vertical tangent lines of the curve xy²=2+xy, we need to take the derivative with respect to x and y and solve for when the derivative equals zero.
Taking the derivative with respect to x, we get:
y^2 + 2xy(dy/dx) = y(dy/dx) + 2x
Simplifying, we get
(dy/dx)(y^2 - y) = 2x - y^2
Taking the derivative with respect to y, we get
2xy + x(dy/dy)(2y) = dy/dy + x
Simplifying, we get
(dy/dy)(x-2y) = 1-x
Setting both derivatives equal to zero, we have
(dy/dx)(y^2 - y) = 2x - y^2 ...(1)
(dy/dy)(x-2y) = 1-x ...(2)
From (2), we get
dy/dy = (1-x)/(x-2y)
Substituting into (1), we get
(1-x)/(x-2y)(y^2 - y) = 2x - y^2
Simplifying, we get
y^3 - 3xy^2 + (2x^2-1)y + x = 0
This is a cubic equation in y, which can have up to three solutions. To find the horizontal or vertical tangent lines, we need to set dy/dx = 0 or dy/dy = 0.
Setting dy/dx = 0, we get
2x - y^2 = 0
Setting dy/dy = 0, we get
x - 2y = 1
Solving these equations simultaneously, we get
x = 2/3 and y = -1/3 or x = -1/3 and y = 1/3
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The given question is incomplete, the complete question is:
In the xy-plane, how many horizontal or vertical tangent lines does the curve xy²=2+xy have?
a rectangular playground is to be fenced off and divided into two parts by a fence parallel to one side of the playground. 720 feet of fencing is used. find the dimensions of the playground that will enclose the greatest total area.
A laptop computer sells for $2,149.99 and has a mail-in rebate for $200. What is
the cost after the rebate if an envelope costs 15¢ and a stamp costs 39¢?
The cost of the envelope and stamp may vary depending on the location and the method of delivery. In this example, we assumed that the cost of the envelope is $0.15 and the cost of the stamp is $0.39, but these values may change based on the specific circumstances.
What is cost?
Cost" is the amount of money or resources that are required to produce, acquire, or obtain something. In other words, cost refers to the expenses that are incurred in the process of acquiring or producing a good or service.
For example, the cost of producing a product may include the cost of raw materials, labor, overhead expenses, and other related costs. Similarly, the cost of acquiring a product may include the purchase price, taxes, shipping costs, and any other fees or expenses associated with the purchase. Overall, cost is a crucial factor in business and economics, as it determines the profitability of a venture and helps to make informed decisions regarding investments and pricing strategies
To find the cost of the laptop after the mail-in rebate and the cost of the envelope and stamp, we can follow these steps:
Subtract the mail-in rebate from the original price of the laptop:
$2,149.99 - $200 = $1,949.99
Add the cost of the envelope and stamp to the cost of the laptop after the mail-in rebate:
$1,949.99 + $0.15 + $0.39 = $2,090.53
Therefore, the cost of the laptop after the mail-in rebate and the cost of the envelope and stamp is $2,090.53.
To explain this calculation, we first subtract the mail-in rebate of $200 from the original price of the laptop, which gives us the price of the laptop after the rebate. Then, we add the cost of the envelope and the stamp to this price to get the total cost of the laptop after the rebate and the cost of the envelope and stamp.
Therefore, The cost of the envelope and stamp may vary depending on the location and the method of delivery. In this example, we assumed that the cost of the envelope is $0.15 and the cost of the stamp is $0.39, but these values may change based on the specific circumstances.
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Show that the four points (2,1), (-1,-5), (1,5) and (-2,-1) are the vertices of a parallelogram
They form a parallelogram because opposite sides of the given points have an equal slope.
What is the slope?The slope of a line is a measure of its steepness. Mathematically, the slope is calculated as "rise over run" (change in y divided by change in x).
According to the given information:To prove that the four points (2,1), (-1,-5), (1,5), and (-2,-1) are the vertices of a parallelogram, we need to show that opposite sides are parallel.
First, we can find the slope of the line connecting (2,1) and (-1,-5):
m1 = (1 - (-5)) / (2 - (-1)) = 6/3 = 2
Next, we can find the slope of the line connecting (1,5) and (-2,-1):
m2 = (5 - (-1)) / (1 - (-2)) = 6/3 = 2
Since the slopes are the same, the line segments connecting these points are parallel.
Now, we can find the slope of the line connecting (2,1) and (1,5):
m3 = (5 - 1) / (1 - 2) = -4
Next, we can find the slope of the line connecting (-1,-5) and (-2,-1):
m4 = (-1 - (-5)) / (-2 - (-1)) = 4/3
Since the slopes are different, the line segments connecting these points are not parallel.
However, we can also see that the line connecting (1,5) and (-1,-5) has the same slope as the line connecting (-2,-1) and (2,1), which is:
m5 = (5 - (-5)) / (1 - (-1)) = 10/2 = 5
Therefore, the line segments connecting (1,5) and (-1,-5), and (-2,-1) and (2,1) are parallel.
Since opposite sides are parallel, the four points (2,1), (-1,-5), (1,5), and (-2,-1) form a parallelogram.
Therefore, they form a parallelogram because opposite sides of the given points have an equal slope.
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Which of these is something I can pay for with the money in a savings account?
Answer:
what are the options?
Step-by-step explanation:
Write the equation of the parabola that has its x-intercepts
at (5, 0) and (-6, 0) and its
at (0, -1).
Answer:
y = (1/25)x^2 - 1
Step-by-step explanation:
To begin, we can use the fact that the x-intercepts of the parabola are at (5, 0) and (-6, 0) to determine the x-intercepts form of the equation. The x-intercepts form of a parabola is given by:
(x - r)(x - s) = 0,
where r and s are the x-coordinates of the x-intercepts.
Using this form, we can write:
(x - 5)(x + 6) = 0
Expanding this equation gives:
x^2 + x - 30 = 0
Next, we use the fact that the vertex of the parabola is at (0, -1) to determine the y-intercept form of the equation. The y-intercept form of a parabola is given by:
y = a(x - h)^2 + k,
where (h, k) is the vertex.
Substituting (0, -1) into this equation gives:
y = a(x - 0)^2 - 1
Simplifying gives:
y = ax^2 - 1
Now we can use the fact that the parabola passes through the point (5, 30) to determine the value of a. Substituting x = 5 and y = 0 into the equation above gives:
0 = a(5)^2 - 1
Solving for a gives:
a = 1/25
Substituting this value of a into the equation above gives the final equation of the parabola:
y = (1/25)x^2 - 1
5/0-6/0-41=
hope that helps okay :) if not really really sorry
Graph y=4/7x−2.
Use the line tool and select two points on the line to graph the line.
By using slope intercept , These were the two points on the line: (0,-2) and (7,2).
Define slope intercept?A line is defined by the equation y = mx + b, which is also known as the slope-intercept form. When the line is graphed, m represents the slope and b the point at which the line intersects the y-axis.
We may use the slope-intercept form of a line, which is y=mx+b where m is the slope and b is the y-intercept, to graph the line y=4/7x-2. Therefore, m=4/7 and b=-2.
These variables allow us to plot two spots along the line. Since the line crosses the y-axis at (0,-2) (the y-intercept), that location will be one of the points.
We can utilize the slope of 4/7 to locate a different point along the line. This indicates that we advance up 4 units in the y direction for every 7 units we move to the right (in the x direction). We can therefore move 7 units to the right and then 4 units up, starting at (0,-2), to reach (7,2).
So now we have two points on the line: (0,-2) and (7,2). These points can be plotted on a coordinate plane, and then a straight line can be drawn through them to create the graph.
Graph given below:
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Please answer asap
It is due today
It would be helpful
The calculated volume of the figure is 761.97 cubic inches
Calculating the volume of the figureFrom the question, we have the following parameters that can be used in our computation:
CylinderConeHollow cylinderThe volume of the figure is calculated as
Volume = Cylinder + Cone - Hollow cylinder
So, we have
Volume = 3.14 * (8/2)^2 * 18 + 1/3 * 3.14 * (8/2)^2 * 5 - 3.14 * (2)^2 * 18
Evaluate
Volume = 761.97
Hence, the volume is 761.97 cubic inches
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