The given statement "the branch of statistical studies called inferential statistics refers to drawing conclusions about sample data by analyzing the corresponding population." is FALSE
In inferential statistics, sample data is analysed as opposed to the entire population since, in some cases, it is impossible to analyse the population of an entire country. As a result, inferential statistics uses analysis of sample data to make conclusions about the entire population. The population's sample data are chosen, and after analysis, the results can be utilised to draw conclusions about the entire population.
Hence, the given statement "the branch of statistical studies called inferential statistics refers to drawing conclusions about sample data by analyzing the corresponding population." is false
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36.
Volume of a Bird Cage. A company makes rectangular shaped bird cages with height b inches and square bottoms.
The volume of these cages is given by the function V= 6³-66b²+ 9b.
(i) Find an expression for the length of each side of the square bottom.
Use the function to find the volume of a cage with a height of 18 inches.
(iii) Use the remainder theorem to find the volume of a cage with a height of 15 inches.
(iv) Verify the result of (iii) using function ?
The expression for side of square bottom = b - 3, volume of rectangle is 4050 and the volume of a cage with a height of 15 inches is 2160.
What is a function ?
Function can be defined as which relates an input to output.
Given,
Volume of a Bird Cage. A company makes rectangular shaped bird cages with height b inches and square bottoms.
Height = b
Volume V = 6³-6b²+9b.
Length of each side (s) :
V = 6³-6b²+9b.
s^2 b = b (b^2 - 6b + 9 )
s^2 = b^2 - 6b + 9
(a - b ) ^2 = a^2 + b^2 -2ab
s^2 = (b-3) ^2
s = b-3
height is 18 inches and height is given as b
Hence, b = 18
s= b-3 (from i)
= 18 - 3
s = 15
Therefore volume:
volume of rectangle = l x b x h
V= 18 x15 x15= 4,050
(If height = 15
then, b = 15
b -15 = 0
Definition of remainder theorem:
we divide a polynomial P(x) by a factor ( x – a); to find a smaller polynomial along with a remainder. The factor doesn't have to be a part of the polynomial.
b^3 - 6b^2 + 9b / b-15 = 2160
Therefore Volume with b = 15 is 2160
Therefore, The expression for side of square bottom = b - 3, volume of rectangle is 4050 and the volume of a cage with a height of 15 inches is 2160.
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The cost to produce bottled spring water is given by C(x) = 16x – 63 where x is the number of thousands of bottles. The total income (revenue) from the sale of these bottles is given by
C(x) = 16x – 63, where x is the number of thousands of bottles, gives the cost of producing bottled spring water.
The formula R(x) = - x2 + 326x – 7463 calculates the total amount (revenue) from the sale of these bottles.
How to determine?Bottles sold will yield the highest profit.
Profit maximization
Profit after selling 245 thousand bottles
C(x) = 16x – 63
R(x) = – x² + 326x – 7463.
Revenue – Cost = Profit
P(x) = R(x) – C (x)
= – x² + 326x – 7463 – (16x – 63) (16x – 63)
= – x² + 310x – 7400
Choice c)
Profit = x2 minus 310x minus 7400
P(x) = – x² + 310x – 7400
P’(x) = -2x + 310
P’(x) = 0 => -2x + 310 = 0 => x = 155
P’’(x) = - 2 < 0
As a result, profit is greatest at x = 155.
The highest profit will be generated if 155 bottles are sold.
Alternative b)
Profit maximization at x = 155
P(x) = – x² + 310x – 7400
= -(155)² + 310(155) – 7400
= Rs 16625
The highest possible profit is Rs 16625.
Alternative b)
Profit after selling 245 thousand bottles
X = 245
−(245)2 + 310(245) – 7400 = profit
= 8525
Alternative (a) Rs 8525
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scenario 2, continued next, you prepare for the question-and-answer session that will follow your presentation. what methods help you consider any limitations of your data? select all that apply. 1 point look at the context eliminate the outliers critically analyze the correlations understand the strengths and weaknesses of the tools
The concept is Data Analysis, which is the process of totally applying statistical tools to dissect data. The answer is options B, C, and D.
To help you consider data limitations, critically dissect correlations, examine the environment, and understand tool strengths and sins. Data analysis applies statistical and/ or logical ways to describe, illustrate, epitomize, and estimate data.
Data analysis helps individualities and associations make sense of data. Data analysts typically analyze raw data for insights and trends.
Limitations include:
Lack of alignment within teamsLack of commitment and patienceLow quality of dataPrivacy concernsComplexity & BiasQuestion
You're preparing a question-and-answer session that will follow your donation. Which styles help you to consider data limitations? elect everything that suits you.
A) exclude the outliers
B) Understand the strengths and sins of the tools
C) Critically dissect the correlations
D) Look at the environment
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Given the quadratic formula f(x)= 3x^2 - 2x + 5, calculate the average rate of change from x= -2 to x = 0.
The average rate of change from x = -2 to x = 0 of the function f(x) = 3x² - 2x + 5 is -8.
What is the average rate of change from x = -2 to x = 0?The average rate of change from -2 to 0 is;
f(0) - f(-2) / 0 - (-2)
Given the quadratic equation in question;
f(x) = 3x² - 2x + 5
Plug in the values;
[ ( 3(0)² - 2(0) + 5 ) - ( 3(-2)² - 2(-2) + 5 ) ]/ 0 - (-2)
[ ( 0 - 0 + 5 ) - ( 12 + 4 + 5 ) ]/ 0 - (-2)
[ 5 - 21 ] / 0 - (-2)
[ -16 ] / 2
-16/2
-8
Therefore, the average rate of change is -8.
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the graduate management admission test (gmat) is a standardized exam used by many universities as part of the assessment for admission to graduate study in business. the average gmat score is (magoosh website). assume that gmat scores are bell-shaped with a standard deviation of . use the empirical rule to answer the following. a. what percentage of gmat scores are or higher (to decimal)? b. what percentage of gmat scores are or higher (to decimal)? c. what percentage of gmat scores are between and (to decimal)? d. what percentage of gmat scores are between and (to decimal)?
a. The percentage of GMAT scores is 647 or higher approximately 15.9%
b. The percentage of GMAT scores that are 747 or higher (to 1 decimal) is approximately 2.3%.
c. The percentage of GMAT scores between 447 and 547 is approximately 84.1%.
d. The percentage of GMAT scores between 347 and 647 (to 1 decimal) is approximately 98.0%.
a. The GMAT score of 647 is 100 points above the average score of 547. Using the standard deviation of 100, we can calculate the standard score (z-score) as 647-547/100 = 1.
Using a standard normal table, we can find that the percentage of GMAT scores that are 647 or higher is approximately 15.9%.
b. The GMAT score of 747 is 200 points above the average score of 547. Using the standard deviation of 100, we can calculate the standard score (z-score) as 747-547/100 = 2.
Using a standard normal table, we can find that the percentage of GMAT scores that are 747 or higher is approximately 2.3%.
c. The GMAT scores between 447 and 547 are 100 points below and 100 points above the average score of 547, respectively.
Using the standard deviation of 100, we can calculate the standard score (z-score) as (447-547)/100 = -1 and (547-547)/100 = 0.
Using a standard normal table, we can find that the percentage of GMAT scores that are between -1 and 0 is approximately 84.1%.
d. The GMAT scores between 347 and 647 are 200 points below and 100 points above the average score of 547, respectively.
Using the standard deviation of 100, we can calculate the standard score (z-score) as (347-547)/100 = -2 and (647-547)/100 = 1.
Using a standard normal table, we can find that the percentage of GMAT scores that are between -2 and 1 is approximately 98.0%.
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The complete question is -
The Graduate Management Admission Test (GMAT) is a standardized exam used by many universities as part of the assessment for admission to graduate study in business. The average GMAT score is 547 (Magoosh website, January 5, 2015). Assume that GMAT scores are bell-shaped with a standard deviation of 100.
a. What percentage of GMAT scores are 647 or higher?
b. What percentage of GMAT scores are 747 or higher (to 1 decimal)?
c. What percentage of GMAT scores are between 447 and 547 ?
d. What percentage of GMAT scores are between 347 and 647 (to 1 decimal)?
An 8 unit x 8 unit x 8 unit cube is composed of smaller 1 unit cubes and is painted blue. How many of the 1 unit cubes have exactly 1 face painted blue?
A. 72
B. 296
C. 216
D. 512
order the following values from least to greatest 13 hundredths 0.03
This paperweight is a hemisphere with a diameter of 7cm. The glass has a density of 3g/cm squared. Calculate the the mass of the paperweight.
Give your answer to 3 significant figures
WILL MARK BRAINLIEST!
Answer:
The answer assumes that the density of glass is 3 g/cm^3, not 3 g/cm^2.
The mass of the paperweight is 270 grams.
Step-by-step explanation:
Lets calculate the volume of a sphere having a radius of 3.5cm, and then divide that by 2 to get the volume of the hemisphere (half a sphere). The sphere has a diameter of 7cm (therefore, a radius of 3.5cm).
Vol (sphere) = (4/3)πr^3
Vol = (4/3)(3.14)(3.5cm)^3
Vol = 180 cm^3
Half of this (the hemisphere) will be 90 cm^3
We know the volume, and we know the density of glass (3 g/cm^3), so multiply the two to obtain the mass of the paperweight.
(90 cm^3)*(3g/cm^3) = 270 grams
The polygons are similar. Find the value of x.
Answer:
24
Step-by-step explanation:
18/3=6 6*4=24
The value of x for the similar triangles is equal to 24.
How to calculate for x for the similar trianglesThe triangles are similar, this implies that the length x cm of the bigger triangle is similar to the length HJ = 18 cm of the smaller triangle
and the length DF = 16 cm of the bigger triangle is similar to the length JG = 12 cm of the smaller triangle
so;
x/18 = 16/12
12x = 18 × 16 {cross multiplication}
12x = 288
x = 288/12 {divide through by 12}
x = 24 cm
Therefore, the value of x is equal to 24 cm for the similar triangles.
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One serving of a crispy cereal has 8 grams of fiber, which is 25% of the recommended daily amount. What is the total recommended daily amount of fiber? Give your answer in grams.
The Recommended daily amount of fiber from the expression 8x is 32g.
what are expressions?
Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between. The mathematical operators can be of addition, subtraction, multiplication, or division. For example, x + y is an expression, where x and y are terms having an addition operator in between. In math, there are two types of expressions, numerical expressions - that contain only numbers; and algebraic expressions- that contain both numbers and variables.
e.g. A number is 6 more than half the other number, and the other number is x. This statement is written as x/2 + 6 in a mathematical expression. Mathematical expressions are used to solve complicated puzzles.
Now,
Given Fiber in one serving of cereal=8gm which is 25% of one day need.
Let 8x be the fiber in cereal where x is multiple of 25%.
So, for one day need fiber needed is 100% i.e. x=4.
Therefore, Fiber needed =8*4=32g
Hence,
The Recommended daily amount of fiber is 32g.
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if the simple multiplier is 5, the required reserve ratio must be group of answer choices 0 50 percent 20 percent 5 percent 10 percent
The required reserve ratio is 20 percent
What is Ratio?
A ratio displays the multiplicity of two numbers. For instance, if a dish of fruit contains eight oranges and six lemons, the ratio of oranges to lemons is eight to six. Similarly, the ratio of oranges to the overall amount of fruit is 8:14, while the ratio of lemons to oranges is 6:8.
A ratio is the relationship or comparison of two numbers belonging to the same unit to determine how much larger one number is than the other.
Given,
If the simple multiplier is 5
Multiplier = 1 / Required Reserve Ratio
5 = 1 / RR
5 = RR
The required reserve ratio = 1/5 = 20%
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what is the location of the center of a circle with diameter endpoints at (7,23) and (11,21)
I think "E" it's the most close answer for me
CONNECTING CONCEPTS Find the value of x such that the quadrilateral is a parallelogram. Then find the perimeter of the parallelogram.
2x+1
x²-5
x²-7
3x - 1
x =
Perimeter:
Answer:
To find the value of x such that the quadrilateral is a parallelogram, you need to solve for x in the equation 2x+1 = 3x - 1. This gives x = 1. The perimeter of the parallelogram is then 2x + x² - 5 + x² - 7 + 3x - 1 = 4x² - 13. Substituting x = 1 gives the perimeter as 4 - 13 = -9.
Evaluate the expression when a=2, b=4, c= -5, and d= -5. 1/4b^3 - 1/5d^3
When a = 2, b = 4, c = -5, and d = -5, the expression for 1/4b^3 - 1/5d^3 is 11.
How do you evaluate this expression?
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations solve the equation for the variable. Then plug that variable value into the expression and simplify to get the answer. Follow this same process anytime you need to use an equation to evaluate an expression.When a = 2, b = 4, c = -5, and d = -5, the expression becomes:
1/4 * 4^3 - 1/5 * (-5)^3
= 1/4 * 64 - 1/5 * -125
= 16 - 25/5
= 16 - 5
= 11
So the expression evaluates to 11.
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when $0.\overline{36}$ is expressed as a common fraction in lowest terms, what is the sum of the numerator and denominator?
When 0.36 is expressed as a common fraction in lowest terms, the numerator is 9 and the denominator is 25. The sum of the numerator and denominator is 34.
To calculate the sum of the numerator and denominator when 0.36 is expressed as a fraction in lowest terms, follow these steps:
Express 0.36 as a fraction by writing 0.36 as the numerator and 10, 100, 1000, or any other power of 10 as the denominator.Reduce the fraction to its lowest terms by dividing both the numerator and denominator by their greatest common factor.Add the numerator and denominator together to get the sum.In this case, 0.36 can be expressed as 9/25. The greatest common factor of 9 and 25 is 1, so the fraction is already in its lowest terms. The sum of the numerator and denominator is 9 + 25 = 34.
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solve the equation 4(x/8 - 2) = 1/4(2x - _) so that it has infinitely many solutions. NEED HELP ASAP
Answer:
Solution:
4 (x/8-2)
= 4 times 1/16 (16 x x/8 - 2x 16)
= 1/4 (2x-32)
Hence 4, (x/8-2) = 1/4 (2x-32) and it has infinitely many solutions
Step-by-step explanation:
The distance to Star A is 4x10^7 about light years. The distance to Star B is about 5x10^4 light years. Choose which star is farther away. Then fill in the blank with a number written in standard notation.
Answer:
Star is is further away
3.995 x [tex]10^{7}[/tex]
Step-by-step explanation:
(4 x [tex]10^{7}[/tex]) - ( 5 x [tex]10^{4}[/tex]) To subtract we need to have the same powers of 10
(4 x [tex]10^{7}[/tex]) - (.005 x [tex]10^{7}[/tex])
(4 - .005)x [tex]10^{7}[/tex]
3.995 x [tex]10^{7}[/tex]
61°24` in radians
Please and thank you
well, we know there are 60 minutes in 1 degree, so 24' is 24/60 = 0.4°, so 61°24' is really 61.4°, now, we also know that there are 180° in π radians, so
[tex]\begin{array}{ccll} degrees&radians\\ \cline{1-2} 180&\pi \\ 61.4&x \end{array}\implies \cfrac{180}{61.4}~~ = ~~\cfrac{\pi }{x} \\\\\\ 180x=61.4\pi \implies x=\cfrac{61.4\pi }{180}\implies x=\cfrac{307\pi }{900}\implies x\approx 1.07~radians[/tex]
Erin i making banana bread to erve 20 guet. He want each guet to have 1 1\6 of a loaf. If he bake 3 loave pf banana bread,will Erin have enough banana bread? Show your work and jutify your anwer
If he bake 3 loave pf banana bread. Since 23 1/3 wants a lot of bread, Erin's banana bread is not enough.
Will Erin have enough banana breadThese are the specified parameters:
Erin's number of guests = 20 people.
Each guet to have 1 1\6 of a loaf.
If he bake 3 loave pf banana bread.
Much to be desired bread
= number of guests × bread per guest
= 20 × 1 1/6
= 20 × 7/6
= 70/3
= 23 1/3
He baked 3 banana loaves, whereas the desired number of loaves was 23 1/3.
Thus Erin's banana bread is not enough for the guest.
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Determine the point P that
partitions the line segment AB
into the ratio 1:3 when A(2, 4)
and B(10, 8).
Answer:
[tex]\left(\dfrac{14}{3}\;, \;\dfrac{16}{3}\right)[/tex]
Step-by-step explanation:
We have two points A(2, 4) and B(10, 9)
P divides the segment AB, it is located 1/3 of the distance from A to B
Lets use the following notation
[tex]\textsf {x_{AB}$= x-distance from A to B}[/tex]
This is the absolute difference between the x-coordinates of A and B
[tex]\textsf {y_{AB}$= y-distance from A to B}[/tex]
This is the absolute difference between the y-coordinates of A and B
[tex]\textsf {x_{AP}$= x-distance from A to P}[/tex]
This is the absolute difference between the x-coordinates of A and P
[tex]\textsf {y_{AP}$= y-distance from A to P}[/tex]
This is the absolute difference between the y-coordinates of A and P
To find the coordinates of P:
Find the x-distance between A and B:Answer: The coordinates of point P are:
[tex]\left(\dfrac{14}{3}\;, \;\dfrac{16}{3}\right)[/tex]
If you actually calculate the distances AB and AP using the distance formula: [tex]d = \sqrt {(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}[/tex]
you will find
AB has length 8.944272 and AP has length 2.9829
2.9829/8.944272 ≅ 0.333 which is 1/3
List the key features of comparative bar graph and segmented bar graph:
Please mark the graph for this equation
The points to be graphed are (0, 3.5) and (-2.8, 0). The graph of the equation is shown in the attached image
How to graph the equation of a line?Given y = x/8 + 3.5
In order to graph the equation of the line:
First, find the value of x when y = 0:
y = x/8 + 3.5, when y = 0:
0 = x/8 + 3.5
x/8 = -3.5
x = -28
Thus, x-intercept is (-28, 0)
Also, find the value of y when x = 0:
y = x/8 + 3.5, when x = 0:
y = 0/8 + 3.5
y = 3.5
Thus, y-intercept is (0, 3.5)
Therefore, the values to be plotted on our graph are (0, 3.5) and (-2.8, 0). The image of the graph is attached
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i dont understand this
Answer:
C
Step-by-step explanation:
Hi there and welcome to brainly!
By looking at the number line, we want to identify which point represents the approximate value of 5π
We know that π has an approximate value of 3.14 so the approximate value of 5π = 5 × 3.14 = 15.7
Looking at the number line, 15.7 falls in between 15 and 16 which correlates to point C
find two vectors in u1 and u2 in r3 so that span u1 u2 = p
Span {u1, u2} = P, and we have found two vectors in u1 = (1, 0, -a/c) and u2 = (0, 1, -b/c) in R3 that span the plane P.
Given: "Find two vectors in u1 and u2 in R3 so that span {u1, u2} = P", where P is a plane in R3.
To find the vectors u1 and u2, we need to find two linearly independent vectors that lie in the plane P.
One possible method to find these vectors is to choose a point on the plane and find a normal vector to the plane. We can then use the point and the normal vector to parameterize the plane.
For example, let's choose a point on the plane as (x0, y0, z0) and a normal vector to the plane as n = (a, b, c).
Then, the equation of the plane can be written as:
ax + by + cz = d
where d = a * x0 + b * y0 + c * z0
We can then choose two linearly independent vectors in the plane by taking partial derivatives with respect to x and y, respectively.
Let's choose u1 = (1, 0, -a/c) and u2 = (0, 1, -b/c). These two vectors lie in the plane and are linearly independent.
Therefore, span {u1, u2} = P, and we have found two vectors in u1 and u2 in R3 that span the plane P.
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Solve the following inequalities; a. 4x+15 >27
Answer:
X>3
Step-by-step explanation:
So we're solving for X
Since it's an inequality, let's make it = 27 instead
4x+15=27
Now we can subtract 15
4x = 12
x = 3
Now that it's saying > 27, that means the same for x, it's has to be > too, concluding x>3... all x's greater than 3
Jamal depoited $4000 into an account with 2. 5% interet, compounded quarterly. Auming that no withdrawal are made, how much will he have in the account after 10 year? Do not round any intermediate computation, and round your anwer to the nearet cent
Jamal will have the amount of $5132.10 in the account after 10 years.
As per the given data:
Jamal deposited the principal amount of $4000 into an account.
P = $4000
Amount brought with 2. 5% interest which is compounded quarterly.
Convert the rate percent to the decimals.
We get:
2. 5% = [tex]$\frac{25}{100}[/tex]
2. 5% = 0.025 = r
Also given that no withdrawals are made.
Here we have to determine that how much will he have in the account after 10 years.
t = 10 years
As the interest is compounded quarterly the value of n is 4
n = 2
Compound interest is the type of interest that is added to the principle amount before the next compounding period begins.
According to compound interest formula:
[tex]$ A=P\left(1+\frac{r}{n}\right)^{n t} \\[/tex]
[tex]$\Rightarrow & A=4000\left(1+\frac{0.025}{4}\right)^{4 \times 10} \\[/tex]
[tex]\Rightarrow \quad & A=4000(1+0.00625)^{40} \\[/tex]
[tex]\Rightarrow \quad & A=4000 \times(1.00625)^{40} \\[/tex]
A = 4000 × 1.2830268206
A = 5132.1072824
A = 5132.10 (After rounding to the nearest cent)
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suppose that 20% of people own dogs. if you pick two people at random, what is the probability that they both own a dog?
Suppose that 20% of people own dogs, if you pick two people at random, the probability that they both own a dog is 0.04.
Suppose that 20% of people own dogs.
So the probability of selecting own dogs = 0.20
The probability that a population unit will be included in a sample obtained through probability sampling is known as probability of selection. Each subset of a population has a probability of being chosen in the sample, which is determined by the sampling design.
If you pick two people at random, then the probability that they both own a dog = 0.20 × 0.20
If you pick two people at random, then the probability that they both own a dog = 0.04
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Is W a subspace of the vector space? If not, state why. (Select all that apply.)
W is the set of all nonnegative functions in C(−[infinity], [infinity]).
W is a subspace of C(−[infinity], [infinity]).W is not a subspace of C(−[infinity], [infinity]) because it is not closed under addition.W is not a subspace of C(−[infinity], [infinity]) because it is not closed under scalar multiplication.
W satisfies both conditions and is closed under addition and scalar multiplication.
What is vector space?In mathematics, a vector space is a fundamental concept in linear algebra.
It is a mathematical structure that consists of a set of objects called vectors, along with operations for vector addition and scalar multiplication.
These operations follow certain axioms, which define the properties of a vector space.
The statement "W is the set of all nonnegative functions in C(−∞, ∞)" does not specify the vector space C(−∞, ∞) correctly.
To determine if W is a subspace of a given vector space, we need to define the vector space correctly.
However, assuming C(−∞, ∞) refers to the set of all continuous functions defined on the interval (−∞, ∞), we can analyze whether W is a subspace of this vector space.
To be a subspace, W must satisfy two conditions:
W must be closed under addition.
W must be closed under scalar multiplication.
Let's evaluate these conditions for W, the set of all nonnegative functions in C(−∞, ∞):
W is closed under addition:
If we take two nonnegative functions from W, their sum will also be nonnegative.
Thus, the sum of any two functions from W will remain in W. Therefore, W is closed under addition.
W is closed under scalar multiplication:
If we multiply a nonnegative function from W by a positive scalar, the result will still be a nonnegative function.
Thus, scalar multiplication by a positive scalar preserves the nonnegativity of the function.
Therefore, W is closed under scalar multiplication.
Based on the above analysis, W satisfies both conditions and is closed under addition and scalar multiplication.
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x is less than or equal to 8, y is more than -3. Graph the solution of the system of linear inequalities. (and fill in)
Answer:
The solution to the system of linear inequalities x <= 8 and y > -3, represented on a coordinate plane, is a region that satisfies both inequalities. It is the half-plane formed by the line x=8 and above the line y=-3 .
Step-by-step explanation:
The solution to the system of linear inequalities x <= 8 and y > -3 can be represented on a coordinate plane as a region that satisfies both inequalities.
To graph the solution, we first plot the line x = 8 on the coordinate plane. Since x <= 8, this line represents the boundary of the solution. Everything to the left of the line x = 8 is included in the solution.
Next, we plot the line y = -3. Since y > -3, everything above the line y = -3 is included in the solution.
The final graph will be a half-plane formed by the line x=8 and above the line y=-3 .
What's the value of x?
Answer:
52
Step-by-step explanation:
Using the exterior angle theorem, [tex]112+x=164 \implies x=52[/tex]
