a. The model predicts that the economic growth based on a barrel of oil priced at $55 is approximately -5.132 + 0.0912 * 55 = 3.8012.
b. The residual is 0.3 - 3.8012 = -3.5012, which indicates that the model is overestimating the economic growth based on a barrel of oil priced at $55. The negative value of the residual suggests that the model needs to be refined in order to provide more accurate predictions.
The least squares regression line model is used to find the best-fit line that minimizes the sum of the squared differences between the observed and predicted values.
The residual is the difference between the actual and predicted values for a given data point. In this case, the residual of -3.5012 suggests that the model is overestimating the economic growth based on a barrel of oil priced at $55.
To improve the accuracy of the model, we could consider additional factors that may impact the relationship between oil price and economic growth, or use different regression techniques to better fit the data.
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Alexandra bought a pair of sunglasses online for $24. She used a coupon code to get a 20% discount. The website also applied a 10% processing fee to the price after the discount. How much was the discount, in dollars and cents?
$2.4 is the discount used to purchase a pair of sunglasses
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that Alexandra bought a pair of sunglasses online for $24.
She used a coupon code to get a 20% discount.
The website also applied a 10% processing fee to the price after the discount.
20%-10%=10%
Now 10% of price is 24
10/100×24=x
2.4=x
24+2.4=26.4 is the actual price.
Hence, $2.4 is the discount used to purchase a pair of sunglasses
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Suppose that Julie's preference over study (s) and leisure (1) is given by the following cobb-Douglas preferences u(s. 1) = S^(1/3)I^(2/3). If she needs to allocate her waking time of 15 hours between these two activities, how much studying is she going to do per day?
For the hours is she going to do studying per day is 10 hours.
Describe Lagrangian method?The Lagrangian method is a mathematical technique used to find the maximum or minimum value of a function subject to constraints. It is used in optimization problems where the objective is to maximize or minimize a function, but there are some constraints that limit the possible values of the inputs.
The Lagrangian method works by combining the objective function and the constraints into a single function, called the Lagrangian, which is then optimized. The Lagrangian is defined as the original objective function minus the product of the constraints and a set of Lagrange multipliers, which represent the trade-off between the objective and the constraints.
To maximize Julie's utility subject to the constraint of 15 hours of waking time, we need to find the optimal level of s (study time) that satisfies the constraint and maximizes the utility function.
We can start by using the Lagrangian method to find the optimal solution. The Lagrangian is given by:
L(s,λ) = S^(1/3)I^(2/3) + λ(15 - s - I)
Where λ is the Lagrange multiplier, representing the marginal rate of substitution between s and I. To find the optimal solution, we need to find the values of s and λ that satisfy the first-order conditions:
∂L/∂s = (1/3)S^(-2/3)I^(2/3) - λ = 0
∂L/∂λ = 15 - s - I = 0
Solving the first-order conditions for s and λ, we get:
s = (15 * (2/3)) / (1 + (2/3)) = 10 hours
I = 15 - s = 5 hours
So, Julie will spend 10 hours per day studying.
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someone help me asap
The function that has the average rate of change of -4 over the interval [-2, 2] is (D) p(x).
What is the Average Rate of Change?
The average rate at which one item is changing in relation to another is known as the average rate of change. An average rate of change function, put simply, is a calculation that divides the amount of change in one thing by the corresponding amount of change in another.The formula for calculating the average rate of change can be given as [tex]A(x)=\frac{f(b)-f(a)}{b-a}[/tex]Here, average rate of change of the function must be calculated over the interval [-2, 2].
(A) The average rate of change of the function m(x):
Here, a = -2, m(a) = -12, and b = 2, m(b) = 4
Substituting the values in the formula for average rate of change, we get
[tex]A(x)=\frac{m(b)-m(a)}{b-a}\\\implies A(x)=\frac{4-(-12)}{2-(-2)} \\\implies A(x)=4[/tex]
(B) The average rate of change of the function q(x):
Here, a = -2, q(a) = -4, and b = 2, q(b) = -12
Substituting the values in the formula for average rate of change, we get
[tex]A(x)=\frac{q(b)-q(a)}{b-a}\\\implies A(x)=\frac{-12-(-4)}{2-(-2)} \\\implies A(x)=-2[/tex]
(C) The average rate of change of the function n(x):
Here, a = -2, n(a) = -6, and b = 2, n(b) = 6
Substituting the values in the formula for average rate of change, we get
[tex]A(x)=\frac{n(b)-n(a)}{b-a}\\\implies A(x)=\frac{6-(-6)}{2-(-2)} \\\implies A(x)=3[/tex]
(D) The average rate of change of the function p(x):
Here, a = -2, p(a) = 12, and b = 2, p(b) = -4
Substituting the values in the formula for average rate of change, we get
[tex]A(x)=\frac{m(b)-m(a)}{b-a}\\\implies A(x)=\frac{-4-12}{2-(-2)} \\\implies A(x)=-4[/tex]
Therefore, the function that has the average rate of change of -4 over the interval [-2, 2] is (D) p(x).
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Abby squeezed the juice from 4 oranges and made 1 cup of orange juice. Each orange provides the same amount of juice.
PART A.
Complete the table below to show the relationship between the number of cups orange juice that are made by squeezing the juice from different numbers of oranges.
Answer:
The table can't be completed as I can't see the table.
However, I can give you the values:
4 Oranges for every 1 Cup of Orange Juice
4, 1
8, 2
12, 3
16, 4
20, 5
Step-by-step explanation:
Find the equation of the linear function represented by the table below in slope-intercept form. x y -1 -5 1 3 3 11 5 19
The equation of the linear function represented by the table below in slope intercept form is f(x) = 4x - 1.
What is Slope?Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.
General equation of a linear function in slope intercept form is,
y = f(x) = mx + c
Here c is the y intercept and m is the slope.
y intercept is the point on the line when x coordinate equals zero.
Given four points on the line (-1, -5), (1, 3), (3, 11) and (5, 19).
Consider two points (1, 3) and (3, 11).
Slope, m = (11 - 3) / (3 - 1) = 8 / 2 = 4
So the equation is y = 4x + c.
Substitute (1, 3) in the above equation.
3 = (4 × 1) + c
c = 3 - 4
c = -1
So the equation is y = 4x - 1.
Hence the given function can be represented as f(x) = 4x - 1.
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The residents of the city voted on whether to raise property taxes the ratio of yes votes to no votes was 5 to 3 if there was 2868 no votes what was the total number of votes 
For Given Fraction 5/3, The total number of votes is 7648.
What is a fraction?
In Maths, a fraction is used to represent the portion/part of the whole thing. It represents the equal parts of the whole. A fraction has two parts, namely numerator and denominator. The number on the top is called the numerator, and the number on the bottom is called the denominator. The numerator defines the number of equal parts taken, whereas the denominator defines the total number of equal parts in a whole.
For example, 5/10 is a fraction.
Here, 5 is a numerator and 10 is a denominator.
There are four different types of fractions. They are:
Unit Fraction – In a fraction, the numerator with 1 is called a unit fraction. For example, ½, ¼
Proper Fraction – If a numerator value is less than the denominator value, it is called a proper fraction. Example: 7/9, 8/10
Improper Fraction – If a numerator value is greater than the denominator value, then it is called an improper fraction. Example: 6/5, 11/10
Mixed Fraction – If a fraction consists of a whole number with a proper fraction, it is called a mixed fraction. Example 5 ¾, 10 ½
Now,
As given ratio is 5/3 for Yes votes to no votes
so total votes is 5x+38x
and also given that no votes i.e. 3x=2868
so, x=956
Hence,
Total votes=8*956=7648
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Each month a brokerage house studies various companies and rates each company’s stock as being either “low risk” or “moderate to high risk.” In a recent report, the brokerage house summarized its findings about 18 aerospace companies and 55 food retailers in the following table:
Company Type Low Risk Moderate to High Risk
Aerospace company 10 8
Food retailer 25 30
If we randomly select one of the total of 73 companies
(a) Find the probability that the company's stock is moderate to high risk given that the firm is an aerospace company. (Round your answer to 4 decimal places.)
(b) Find the probability that the company's stock is moderate to high risk given that the firm is a food retailer. (Round your answer to 4 decimal places.)
(c) Determine if the company type is independent of the level of risk of the firm's stock. (Round your answers to 4 decimal places.)
The probabilities for this problem are given as follows:
a) Moderate to high, given that it is an aerospace company: p = 4/9 = 0.4444.
b) Moderate to high, given that it is a food retailer: p = 6/11 = 0.5455.
c) As the probabilities are different, the company type is independent of the level of risk of the firm's stock.
How to obtain the probability?A probability is given by the division of the number of desired outcomes by the number of total outcomes.
For item a, the outcomes are given as follows:
Total outcomes: 18 aerospace companies.Desired outcomes: 8 aerospace companies with moderate to high risk.Hence the probability is given as follows:
p = 8/18
p = 4/9.
For item b, the outcomes are given as follows:
Total outcomes: 55 food retailer companies.Desired outcomes: 30 food retailer companies with moderate to high risk.Hence the probability is given as follows:
p = 30/55
p = 6/11.
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Factor the expression using GCF
32y - 48
Answer:
2y-3
Step-by-step explanation:
GCF of 32 and 48=16
(32y-48)/16=2y-3
The taxes on a house assessed at 108,000 are $2700 a year if assessment is raised to 128,000 and tax rate didn't change how much is the taxes now
Answer:
The new taxes would be $3300.
Step-by-step explanation:
The assessment value and tax rate determine how much a house will cost in taxes. The amount of taxes would increase if the assessment is raised from $108,000 to $128,000.
To find the new amount of taxes, you need to multiply the increased assessment value by the same tax rate:
$128,000 - $108,000 = $20,000 increase in assessment value
$20,000 * ($2700/$108,000) = $600 increase in taxes
Therefore, the new taxes would be $2700 + $600 = $3300.
4. Mark wants to find the area of a circle with a diameter of 8 cm. Which expressions can he use to find the area of
the circle in square centimeters? Choose all the correct answers.
A 2•4• (pi)
B 8• (pi)
C 4•4•(pi)
D 8²• (pi)
E 4² •(pi)
Answer:
B. the area is d x pi its the solution
A party rental company has chairs and tables for rent. The total cost to rent 5 chairs and 3 tables is $38. The total cost to rent 2 chairs and 12 tables is $107. What is the cost to rent each chair and each table?
Answer:
Chair: $2.50
Table: $8.50
Step-by-step explanation:
First, let's create equations with the information given to us:
x= cost of a chair
y= cost of a table
5x + 3y = $38
2x + 12y = $107
The next step is to solve for x in terms of y. To do this, I will be using the equation 5x + 3y = $38.
5x + 3y = $38 [Subtract 3y from both sides]
5x = -3y + 38 [Divide by 5]
x =(-3/5)y + 38/5
Now that we have found the value of x in terms of y, we will plug it into the equation 2x + 12y = $107.
2x + 12y = $107
2 ((-3/5)y + 38/5) + 12y = 107 [Distribute]
(-6/5)y + 76/5 + 12y = 107 [Combine like terms]
(54/5)y + 76/5 = 107 [Subtract 76/5 from both sides]
(54/5)y = 459/5 [Multiply both sides by 5/54]
y = 17/2 or 8.5
So, the cost of a table is $8.50.
Now that we have found the price of the table, let's plug it into the equation 5x + 3y = $38 to find the price of the chair.
5x + 3y = $38
5x + 3 ( 17/2 ) = 38 [Distribute]
5x + 51/2 = 38 [Subtract 51/2 from both sides]
5x = 25/2 [Divide both sides by 5]
x = 5/2 or 2.5
So, the cost of a chair is $2.50.
So, the chair costs $2.50 while the table costs $8.50.
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Please help me with this question.
The solution of given trigonometric equation, 6sin²θ-13sinθ+7 = 0 is θ = π/2
What are trigonometric equations?A trigonometric equation is one that contains a trigonometric function with a variable.
Given is a trigonometric equation,
6sin²θ-13sinθ+7 = 0
Solving for θ
6sin²θ-6sinθ-7sinθ+7 = 0
6sinθ(sinθ-1)-7(sinθ-1) = 0
(6sinθ-7)(sinθ-1) = 0
sinθ = 1
θ = π/2
or,
6sinθ-7 = 0
sinθ = 7/6 [no solution]
Hence, the solution of given trigonometric equation, 6sin²θ-13sinθ+7 = 0 is θ = π/2
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I need help asap please it's due very soon
The quotient is 3x²+5x+5.
What is the division?The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of items.
The given expressions are 3x³-x²-5x-10 and x-2.
Here, (3x³-x²-5x-10)/(x-2)
x-2|3x³-x²-5x-10|3x²+5x+5
(-)3x³-6x²
____________
5x²-5x-10
(-)5x²-10x
____________
5x-10
(-)5x-10
____________
0
Therefore, the quotient is 3x²+5x+5.
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Solve the quadratic equation by completing the square: x^2 + 16x +51 = 0
Answer:
x = ±√13 - 8
Step-by-step explanation:
Move the constant term to the right side of the equation.
x² + 16x + 51 = 0
x² + 16x = -51
We complete the square by taking half of the coefficient, squaring it, and adding it to both sides of the equation. The formula is (b/2)².
x² + 16x = -51
here the formula would be (16/2)² = 64
x² + 16x + 64 = -51 + 64
Now just simplify by factoring the left side and adding up the right side.
(x + 8)² = 13
You have to isolate x to find what it equals. Here start by taking the square root of both sides
x + 8 = √13
Subtract 8 to both sides
x = ±√13 - 8
A map used a scale of 1/2 cm = 75 kilometers. The actual distances between various cities are given below. Find the distance Between the cities on the map.
The distance between the cities on the map is given by the equations
a) The distance of 50km = ( 1/3 ) cm
b) The distance of 280km = ( 1 13/15 ) cm
c) The distance of 142 1/2 km = ( 19/20 ) cm
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the distance on the map be represented as A
Now , the equation will be
The scale on the map is given by 1/2 cm = 75 km
So , 1 km = ( 1/2 ) / 75 cm
1 km = ( 1/150 ) cm
a)
when the distance = 50 km
The distance on the map = 50 x ( 1/150 ) cm
The distance on the map = ( 1/3 ) cm
b)
when the distance = 280 km
The distance on the map = 280 x ( 1/150 ) cm
The distance on the map = ( 1 13/15 ) cm
c)
when the distance = 142 1/2 km
The distance on the map = 142 1/2 x ( 1/150 ) cm
The distance on the map = ( 19/20 ) cm
Hence , the equation is solved
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What is the domain of the table below?
Input|Output
-3
6
12
585
The domain of the table below is {-3, 6, 12}
How to determine the domain of the tableFrom the question, we have the following parameters that can be used in our computation:
The table of values
The domain of a function is the set of the input values
This means that the domain is
Domain = {-3, 6, 12}
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What number is 301% of 82?
Answer:
269
Step-by-step explanation:
big × square root 05 is Justin Beiber
Answer:
301/8200
Step-by-step explanation:
82 x (X) = 301/100
82x/1 = 301/100
now we cross multiply.
8200x = 301
x = 301/8200
it may be wrong, sorry if it is :(
Which point represents the origin? (2 points)
Part B: Starting from the origin, explain how to plot the following three points accurately:
(2, −2)
(−2, 1.5)
(−1, fraction 2 over 4 )
Answer:
The origin is the point (0,0)
(2,-2) Start at the origin and move 2 unit right along the x axis, from there move down 2 units. Place a point at that location.
(-2, 1.5) Start at the origin and move 2 units left along the x axis, from there move up 1.5 space and place a point.
(-1, 2/4) Start at the origin and move left 1 unit along the x axis, from there move up 1/2 a unit and place a point. 2/4 is the same as 1/2
Step-by-step explanation:
In the diagram below of triangle DEF, G is the midpoint of DF and H is the midpoint of EF. If GH = 3x + 2, and DE = 18 + 4x, what is the measure of GH?
Answer:
23.
Step-by-step explanation:
1) if 'G is the midpoint of DF and H is the midpoint of EF', then 0.5*DE=GH, and
2) it is possible to write: 0.5(18+4x)=3x+2, where x=7.
3) if x=7, then GH=3*7+2=23.
Isabella bought a T-shirt for $85, after sales tax is added is added the final cost was $97.75. what was the percent of sales tax?
97.75 - 85 = 12.75
This means the amount of tax was $12.75.
If we divide the amount of tax by the original price of the shirt, it gives us the percent of the tax:
12.75 ÷ 85 = 0.15 = 15%
Sales tax is 15%.
The key in the calculation is to divide by the original price of the shirt.
1. Explain IKEA's brand image. The video mentions how the brand at one point had French influence but then decision. 2. Describe IKEA's sustainability initiatives. What impact has Gen Z had on holding retailers accountable to act 3. Some businesses use sustainability as a marketing tactic as opposed to a mission true to its core. Do you be
1. KEA's brand image is centered around affordability, simplicity, and modern design.
2. IKEA has a strong commitment to sustainability, with initiatives that include reducing waste, using sustainable materials in its products, and investing in renewable energy.
3. Sustainability is an increasingly important issue for consumers, and many businesses use it as a marketing tactic to appeal to environmentally-conscious consumers. l IKEA is one such company, and its commitment to sustainability is reflected in its long-term goals and initiatives, as well as its focus on sustainable product design and operations.
How to explain the brand imageThe company's "Democratic Design" philosophy reflects this, emphasizing the importance of quality, sustainability, and affordability in its products.
The company has set ambitious goals to become more environmentally friendly, such as producing as much renewable energy as it consumes by 2020 and becoming climate positive (i.e., reducing its net greenhouse gas emissions) by 2030.
In recent years, Gen Z has been a major driving force behind holding retailers accountable for their environmental impact, and IKEA has responded to this by continuing to focus on sustainability and transparency in its operations.
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Jon walked 98 feet in 11.5 seconds. What is his speed in miles per hour? (1 mi = 5280 ft)
Answer:To convert this to miles per hour, we need to first convert the distance to miles. We know that 1 mi = 5280 ft, so 98 ft = 98 / 5280 mi = 0.0184 mi.
Now we can use the formula speed = distance / time again, but this time using miles and hours as the units. So, speed = 0.0184 mi / (11.5 s / 3600 s/hr) = 0.0184 mi / 0.003194 hr = 5.8 mi/hr.
Step-by-step explanation:
Answer:
5.81 mph
Step-by-step explanation:
We want to first convert the number of feet to miles and then divide by the number of hours. Since we know that 5280 feet is one mile, we essentially want to find how many "groups" of 5280 are in some distance and that's the number of miles. We can do this by dividing.
[tex]\frac{98}{5280}\approx0.018561[/tex]
Now we want to find how many hours 11.5 seconds is. It's basically the same process as we divide this by the number of seconds in an hour 3600.
11.5/3600 = 0.00319
Now divide the distance over the time and this gives us approximately: 5.81 mph
Amanda rented a bike from Ted's Bikes. It costs $10 for the helmet plus $3.75 per hour. If Amanda paid about $41.88, how many hours did she rent the bike? a) Let h = the number of hours she rented the bike. Write the equation you would use to solve this problem. b) Now solve your equation Amanda rented the bike for an hour.) hours. (Round your answer to the nearest tenth of Enter an integer or decimal number [more..]
Answer:
a) The equation to solve this problem would be:
10 + 3.75h = 41.88
b) To solve for h, we first need to subtract 10 from both sides:
3.75h = 31.88
Then, divide both sides by 3.75:
h = 8.50 (rounded to the nearest tenth)
So Amanda rented the bike for 8.5 hours.
Step-by-step explanation:
Answer: a) To solve the problem, we can use the equation:
Cost = 10 + 3.75h
Where h is the number of hours Amanda rented the bike.
b) We know that the cost is about $41.88, so we can plug that in for the cost and solve for h:
41.88 = 10 + 3.75h
31.88 = 3.75h
h = 31.88/3.75
h = 8.5 hours
So Amanda rented the bike for 8.5 hours. (rounding to the nearest tenth)
Step-by-step explanation:
Not sure of this, is this right?
Answer:
I think so.
Step-by-step explanation:
Find a solution to the initial value problem, xy' + y = 8e", y(1) = -1 + 8e. [Hint: Interpret the left-hand side of the equation as the derivative of the product of two functions.] y =
The solution of the initial value problem xy' + y = 8e is equal to
log (x ) = - log ( 8e - y ) .
Solution of the initial value problem is:
xy' + y = 8e
⇒ x (dy /dx ) + y = 8e
⇒ x (dy/dx ) = 8e -y
⇒ dx / x = ( 1 / (8e -y ) ) dy
Integrate both the sides we get,
⇒ log (x ) = - log ( 8e - y ) + c ____(1)
Now , we have y ( 1 ) = -1 + 8e
Substitute the value y ( 1 ) = -1 + 8e in (1) we get,
⇒ log ( 1 ) = - log ( 8e - ( -1 + 8e )) + c ( value of log (1) = 0 )
⇒ 0 = - log ( 8e + 1 - 8e ) + c
⇒ 0 = log ( 1 ) + c
⇒ c = 0
Now substitute c =0 in (1) we get,
log (x ) = - log ( 8e - y )
Therefore, the explicit solution of the initial value problem is equal to
log (x ) = - log ( 8e - y ) .
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The value(s) of x that satisfy √x² - 4x - 5 = 2x - 10 show work (a) (5, 7) (b) (5) (c) (7) (d) (3, 5, 7)
The value(s) of x that satisfy the given solution is (5, 7).
How to find the value(s) of x ?Power on both sides: (√4x-5)²-(2x-10)
2 Simplify using exponent power rule (a")=am
x²-4x-5-(2x-10) 2
Expand the expression using (a+b)
2-a2+2ab+
b2: 2-4x-5-(2x) 2-2×2×10+10²
Multiply the monomials: 2-4-5-(2) 2-40
+102 Calculate the power: 2-4-5-(2x) 2-40x+ 100
Simplify using exponent rule with same exponent
(ab)"a"-b" 2-4x-5-22-2-40x+100 Calculate the power: 2-4-5-4x-40+
100
equation: 2-4-5-4x²+40x-100-0 Combine like terms: -3x²+36-105-0
12r+35-0
Rearrange all nonzero terms to the left side of the Reduce the greatest common factor on both sides of the equation: -2+12-35-0 Multiply each term of the equation by -1: 2-
Find two integers: -7-5--12 1-7x (-5)=35
Rewrite the middle term: 2-7x-5x+35-0 Factor the first two terms and the last two terms respectively: (-7) -5(x-7)=0 Apply zero product property that at least one
Extract the common factor: (x-7)(x-5) =0
factor is zero: 2-7-0 or x-5-0 Rearrange unknown terms to the left side of the
equation: -7
Rearrange unknown terms to the left side
equation: =5
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MATH for 53 POINTS
Find m∠DEC.
Answer:
118°
Step-by-step explanation:
in a recent year, male students and female students were enrolled as undergraduates. receiving aid were of the male students and of the female students. of those receiving aid, of the males got federal aid and of the females got federal aid. choose student at random. (hint: make a tree diagram.) find the probability of selecting a student from the following.
To make a tree diagram, start by writing out the given information and drawing a box around it. Then draw two branches off of the box representing the two possible outcomes of selecting a student, male or female. Then draw two more branches off of each of the first two branches, representing the two possible outcomes of receiving aid.
Then draw two more branches off of each of the second two branches, representing the two possible outcomes of receiving federal aid. This will create a tree diagram that looks like this (see the image).
From the tree diagram, we can calculate the probability of selecting a student from the given information as follows:
P(selecting a student) = P(selecting a male) + P(selecting a female) = (of male students/total students) + (of female students/total students) = (of male students + of female students)/total students =
Therefore, the probability of selecting a student from the given information is .
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Given the table of values below, find the average rate of change of the function f(x) on the interval [4,9].
x 3 4 5 6 7 8 9 10
f(x) 77 97 131 155 160 177 212 245
Enter your answer as a reduced improper fraction, if necessary.
The average rate of change of the function f(x) on the interval [4,9] is equal to 23.
How to determine the average rate of change?In Mathematics, the average rate of change of f(x) on a closed interval [a, b] is given by this mathematical expression:
Average rate of change = [f(b) - f(a)]/(b - a)
Next, we would determine the average rate of change of the function f(x) over the interval [4, 9]:
a = 4; f(a) = 97
b = 9; f(b) = 212
Substituting the given parameters into the average rate of change formula, we have the following;
Average rate of change = (212 - 97)/(9 - 4)
Average rate of change = 115/5
Average rate of change = 23.
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Yolanda invests $6,000. Some of the money is invested in stocks paying 6% a year and some in bonds paying 11% a year. If she receives $580 each year., how much is invested in stocks?
The amount of money that Yolanda invested in the stock is x = $1600
What are equations?An equation is the equality that has mathematical expressions on both sides of it, they can be functions, polynomials or others, there are no limits for them.
Equations can be graphed, just like a function.
To solve this problem we will only formulate two equations:
(a) The sum of the amount to invest in stocks and bonds will be $6000:
x + y = 6000
(b) The percentage of stocks 6% and bonds 11% for a profit of $580.
0.06x + 0.11y = 580
x + y = 6000 ----⇒ x = 6000 - y
0.06(6000 - y) + 0.11y = 580
360 - 0.06y + 0.11y = 580
0.05y = 220
y = $4400
x = 6000 - 4400
x = $1600
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