Examine the following graphed systems of linear inequalities. Select the points below that are solutions to each system of inequalities. Select TWO that apply.
1. 2.
(2,3) (0,0)
(4,3) (4,3)
(-7,6) (6,1)
(-2,3) (2-5)
I need help D: pls ​

The cost of each item would be = $1.5 each of cup of coffee and donuts.

For yesterday, the number of donut he ordered = 6

The number of cup of coffee he ordered = 8cup

Total cost = $21

The total number of items he ordered = 6+8 = 14

The cost for donuts alone,

= 6/14× 21/1

= 126/14

= $9

The cost of each donut = 9/6 = $1.5

The cost of cup of coffee ;

= 8/14× 21/1

= 168/14

= 12

for each cup of coffee;

= 12/8

=$1.5

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Answer:

Here is a diagram and transition matrix for this case:

Diagram:

        +---(0.65)---> State 1 (work)

        |

Start ---+

        |

        +---(0.35)---> State 2 (procrastinate)

                  |

                  +---(0.15)---> State 1 (work)

                  |

                  +---(0.85)---> State 2 (procrastinate)

Transition matrix:

         |  State 1  |  State 2  |

----------+-----------+-----------+

State 1   |   1.00    |   0.00    |

----------+-----------+-----------+

State 2   |   0.15    |   0.85    |

----------+-----------+-----------+

In the transition matrix, the rows represent the starting state and the columns represent the ending state. The entries in the matrix represent the probabilities of transitioning from the starting state to the ending state. For example, the entry in row 1 and column 2 (0.00) represents the probability of transitioning from State 1 to State 2, which is 0.00.

The 5-number summary in the given situation is:

Minimum = 4; Q1 = 8; Median = 12; Q3 = 16; Maximum = 20

When conducting descriptive analyses or conducting an initial analysis of a sizable data set, a five-number summary is particularly helpful.

The maximum and minimum values in the data set, the lower and upper quartiles, and the median make up a summary's five values.

A five-number summary is a tool for exploratory data analysis that sheds light on how values for a single variable are distributed.

These statistics represent the distribution of data values, as well as their central tendency, variability, and overall shape.

So, 5 number summary would be:

Minimum = 4

Q1 = 8

Median = 12

Q3 = 16

Maximum = 20

Therefore, the 5-number summary in the given situation is:

Minimum = 4; Q1 = 8; Median = 12; Q3 = 16; Maximum = 20

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The probabilities that each of the five boxes has no balls, which is E[X] = Σ5i=1 (1-pi)^10. The probabilities that each of the five boxes has exactly one ball, which is E[X] = Σ5i=1 pi*(1-pi)^9.

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The probability of the randomly chosen American passenger car is a uniformly distributed random variable ranging from 1,557 pounds to 4,665 pounds is given as:

In statistics, a uniform distribution is a kind of probability distribution where all possible outcomes have an identical likelihood of occurring. Because there is an equal chance of getting a heart, club, diamond, or spade, a deck of cards has uniform distributions.

PDF of Uniform Distribution f(x) = 1/(b-a) for a <x<b

b = Maximum Value

a = Minimum Value

Mean = (a + b)/2

Standard Deviation [tex]\sqrt{((b- a)^2/12)}[/tex]

a) Mean = a + b/2=3111

mean weight of a randomly chosen vehicle is 3111

b) Standard Deviation = [tex]\sqrt{((b- a)^2/12)}[/tex] =897.2023

f(x) = 1/(b-a)

= 1/(4665-1557)

=1/3108

= 0.0003

the standard deviation of a randomly chosen vehicle is 0.0003.

c) P(X < 1946) = (1946-1557) x f(x)

= 389 x 0.0003

= 0.1167

the probability that a vehicle will weigh less than 1,946 pounds is 0.1167.

d) P(X > 4455) = (4665-4455) x f(x)

=210 x 0.0003

= 0.063

the probability that a vehicle will weigh more than 4,455 pounds is 0.063.

e) To find P(a< X< b)=( b - a) x

f(x) P(1946 < X < 4455)

= (4455-1946) x f(x)

=2509 x 0.0003

= 0.7527

the probability that a vehicle will weigh between 1,946 and 4,455 pounds is 0.7527.

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As a result, the probability that the average battery life exceeds 553.9 minutes is 0.0262 (or 2.62%). The answer, rounded to four decimal places, is 0.0262.

Probability serves as an indicator of how likely an event is to occur. It is represented by a number between 0 and 1, with 0 representing an unlikely event and 1 representing an unavoidable event. Switching a fair coin and coin flips has a probability of 0.5 or 50% because there are two equally likely outcomes. (Heads or tails). Probability theory is a branch of mathematics that studies happenings rather than their properties. It is applied in many fields, including statistics, fund, science, and engineering.

The central limit theorem can be used to approximate the sample mean distribution as a normal distribution with a mean of the population mean and a standard deviation of the population standard deviation divided by the square root of the sample size.

The standard error of the mean (SE) is calculated as follows:

SE = σ/√n

Where n is the sample size and is the population standard deviation.

SE = 83/√160 = 6.575

Z = (X - μ) / SE

Where X represents the sample mean, is the population mean, and SE represents the standard error of the mean.

Z = (553.9 - 541) / 6.575 = 1.94

As a result, the probability that the average battery life exceeds 553.9 minutes is 0.0262 (or 2.62%). The answer, rounded to four decimal places, is 0.0262.

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a) The first four nonzero terms of the power series for f(x) about x=0 are

e^6 - 2x^2 + (2x^4)/2! - (2x^6)/3!

The general term of the power series is (-2)^n (2x)^(2n) / (2n)!

b) The interval of convergence of the power series is (-∞, ∞).

c) To estimate the error between f(x) and its partial sum g(x) given by the sum of the first four nonzero terms of the power series, we can use the Lagrange form of the remainder

|R4(x)| = |f(x) - g(x)| ≤ M |x|^5 / 5!

a) To find the power series for f(x) about x = 0, we can use the Maclaurin series formula

f(x) = Σ[n=0 to ∞] (fⁿ(0)/n!) xⁿ

where fⁿ(0) denotes the nth derivative of f evaluated at x=0.

In this case, we have

f(x) = e^6(-2x^2)

fⁿ(x) = dⁿ/dxⁿ(e^6(-2x^2)) = (-2)^n(2x)^ne^6(-2x^2)

So, we can write the power series as

f(x) = Σ[n=0 to ∞] ((-2)^n(2x)^n e^6(0))/n!)

= Σ[n=0 to ∞] ((-2)^n (2x)^n /n!)

To find the first four nonzero terms, we substitute n = 0, 1, 2, and 3 into the above formula

f(0) = e^6

f'(0) = 0

f''(0) = 24

f'''(0) = 0

So, the first four nonzero terms of the power series are:

e^6 - 2x^2 + (2x^4)/2! - (2x^6)/3!

The general term of the power series is

(-2)^n (2x)^(2n) / (2n)!

b) To find the interval of convergence of the power series, we can use the ratio test

lim [n→∞] |((-2)^(n+1) (2x)^(2n+2) / (2n+2)! ) / ((-2)^n (2x)^(2n) / (2n)!)|

= lim [n→∞] |-4x^2/(2n+1)(2n+2)|

= lim [n→∞] 4x^2/(2n+1)(2n+2)

Since this limit depends on the value of x, we need to consider two cases

i) If x = 0, then the power series reduces to the constant term e^6, and the interval of convergence is just x=0.

ii) If x ≠ 0, then the series converges absolutely if and only if the limit is less than 1 in absolute value

|4x^2/(2n+1)(2n+2)| < 1

This is true for all values of x as long as n is sufficiently large. So, the interval of convergence is the entire real line (-∞, ∞).

c) We can use the Lagrange form of the remainder to estimate the error between f(x) and its partial sum g(x) given by the sum of the first four nonzero terms of the power series

|R4(x)| = |f(x) - g(x)| ≤ M |x|^5 / 5!

where M is an upper bound for the fifth derivative of f(x) on the interval [-0.6, 0.6].

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The minimum value of f subject to the given constraint is -62.42 (abs min).

We need to find the minimum and maximum values of f(x,y) = 2x-5y subject to the constraint g(x,y) = x2+3y2 = 111.

Using Lagrange multipliers, we solve the equations:

∇f= λ∇g and g(x,y)  = 111.

This gives,

2 = λ2x    (1) equation.

-5 = λ6y   (2) equation.

From (1) we have λ=1/x. Substituting this into (2)

we have x=-6y/5 (3).

By substituting (3) into constraint g(x,y) we have

                     (-6y/5)2+3y2 = 111

                   y2(-36/25 + 3) = 111

                                         y = ±5√37/√13.

We have given some corresponding points in question (-6√37/√13, 5√37/√13) and (6√37/√13, -5√37/√13).

Evaluating f at these critical points:

f(-6√37/√13, 5√37/√13)

= 13√37/√13

≈ -62.42 (abs min)

f(6√37/√13, -5√37/√13)

=  37√37/√13

≈ 62.42  (abs max)

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Full Question:

Use Lagrange multipliers to find the maximum and minimum values of f(x,y)=2x−5y subject to the constraint x2+3y2=111, if such values exist.

Answer:

8.6 feet.

Step-by-step explanation:

To find the length of the leash, we use the Pythagorean theorem (a² + b² = c²).

Since c is the hypotenuse, c here is the leash length.

Plug the values in and solve:

c² = 5² + 7²

c² = 25 + 49

c² = 74

c = √74 ≈ 8.6

The leash is 8.6 ft long.

Answer:

35 minutes

Step-by-step explanation:

because it is composure

The probability that both are not defective​ is 47%.

It is the ratio of good outcomes to all possible outcomes of an event is known as the probability. The number of positive results for an experiment with 'n' outcomes can be represented by the symbol x. The probability of an occurrence can be calculated using the following formula.

Probability(Event) = Positive Results/Total Results = x/n

Total number of items = 10

Number of defective items= 3

Number of not defective items=7

Probability of two items are not defective

⁷C₂/¹⁰C₂=

=7!/(5!×2! ) ÷10!/(8!×2!)

=7/15×100=46.6%≈47%

Hence, the probability that both are not defective​ is 47%

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In order to see the school of fish, the scuba diver descended to a depth of 14 feet below sea level.

Hοw far sοmething stretches is described by the cοncept οf depth. The pοοl has a six-fοοt depth. Unknοwn is the well's depth. We can use the fοllοwing equatiοn tο determine the scuba diver's initial depth:

Initial depth = Final depth + Depth Change The scuba diver's change in depth is positive because he rose f feet (positive because he went up) and ended up 16 feet below the surface. Therefοre:

initial depth = 16 + f - 30 initial depth.

Simplifying the phrase:

Original depth = -14 + f

The scuba diver reached his initial depth there after descended another 14 feet below sea level to observe the school of fish.

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Questions-

A scuba diver was 30 feet below sea level when he ascended f feet to a depth of 16 feet below sea level to see a school of fish. what is her new elevation now?

Option D, F(x) = 1/x-4, is the rational function that best fits the graph.

Any function that can be expressed as a polynomial divided by a polynomial is said to be rational. Since polynomials are defined everywhere, the domain of a rational function is the set of all numbers except the zeros of the denominator.

The graph features a vertical asymptote at x = 4 and a horizontal asymptote at y = 0, as can be seen by looking at it.

Option A, F(x) = 1/4x, has a horizontal asymptote at y = 0, but does not have a vertical asymptote at x = 4.

Option B, F(x) = 4/x, has a vertical asymptote at x = 0, but not at x = 4.

Option C, F(x) = 1/x+4, has a vertical asymptote at x = -4, but not at x = 4.

Option D, F(x) = 1/x-4, has a vertical asymptote at x = 4, and does not have any other vertical asymptotes.

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Answer:

True

Step-by-step explanation:

Since x = 3 since we are given that f(3) = 16, x = 3.

The equation is:

[tex]f(x) = x^{2} + 2x + 1[/tex]

and x = 3, we can easily sustitute x with 3. When we do so, our equation will look like:

[tex]f(3) = 3^{2} + 2(3) + 1[/tex]

Now, we will solve.

3^2 is = 9

2(3) = 6

Now, we will plug into the equation:

[tex]f(3) = 9 + 6 + 1[/tex]

Combine like terms (constants)

[tex]f(3) = 16[/tex]

The correct research hypothesis and distribution is directional, t-test for independent means.

The research hypothesis that "people can hear better when they have just eaten a large meal" is a directional hypothesis because it predicts the direction of the effect (i.e., hearing ability will improve after a large meal).

The appropriate statistical test to use would be a t-test for independent means, which compares the means of two independent groups to determine if there is a statistically significant difference between them.

Therefore, the correct answer is B. Directional; t-test for independent means.

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Both rectangular prisms  will move at the same speed and volume of A > volume of B

What is rectangular prism ?

A rectangular prism is a three-dimensional solid shape that consists of six rectangular faces. It is also known as a rectangular cuboid, and it is a special case of a parallelepiped, which is a six-faced polyhedron where each face is a parallelogram. The rectangular prism has parallel and congruent rectangular bases that are connected by rectangular faces that are perpendicular to the bases.

The rectangular prism has several important properties. One of the most important is its volume, which is given by the formula V = lwh, where l is the length, w is the width, and h is the height of the rectangular prism.

Comparing their masses and volumes.
If the mass is the same for both rectangular prisms, then they will move at the same speed if pushed by the same amount of force. The mass of an object is a measure of the amount of matter it contains, and since both prisms have the same mass, they contain the same amount of matter. The force required to move an object is proportional to its mass, so if both objects have the same mass, they will require the same amount of force to move. Therefore, they will move at the same speed.

We can compare their volumes using the inequality sign:

volume of A > volume of B

This is because the area of the base of A is greater than the area of the base of B, and the height of A is less than the height of B. So, A has a greater volume than B.

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Therefore, the average American eats 13.552 more grams of salt per week than the Centers for Disease Control and Prevention recommend.

Multiplication is a mathematical operation used to find the product of two or more numbers. The result of multiplication is called the product. It is represented by the symbol "×" or "*", and the numbers being multiplied are called factors. Multiplication is a way of adding multiple numbers of the same value. Similarly, multiplication can also be thought of as repeated addition of one number. Multiplication has many practical applications in everyday life, such as calculating the total cost of multiple items at a given price or determining the area of a rectangular surface by multiplying its length and width. It is also an essential part of higher-level mathematics, such as algebra and calculus.

Here,

There are 7 days in a week, so to find the total amount of salt the average American eats in a week, we need to multiply the daily amount by 7:

3.436 grams/day * 7 days = 24.052 grams/week

To find the recommended amount for a week, we simply multiply the daily recommendation by 7:

1.5 grams/day * 7 days = 10.5 grams/week

The difference between these two amounts is:

24.052 grams/week - 10.5 grams/week = 13.552 grams/week

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a) The drawing of all data points on a 2D plane is illustrated below.

b) The angle in between the five other points is 27

c) The matrix outer product for X is R = XXT.

d) The matrix outer product can also be calculated via R is (2,27)

The data matrix X is a 2-by-7 matrix, where each column represents a data point with two components. We can visualize each data point as a vector in a two-dimensional plane, where the horizontal axis represents the first component and the vertical axis represents the second component.

To draw all data points on a 2D plane, we can plot each column of X as a vector starting from the origin. Proper labeling of the two axes and providing important tick values will facilitate a precise graphical description of the data.

Next, we can use the inner product formula to calculate the angle between the first data point (2, 27) and the other five data points, respectively.

The inner product, also known as the dot product, is a way to measure the similarity between two vectors by multiplying their corresponding components and summing the products.

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Answer:

Step-by-step explanation:

In the boys triangle:

  [tex]tanx=\frac{56}{48}[/tex]

        [tex]x=tan^{-1}(\frac{56}{48} )=49.4\textdegree[/tex]

Because triangles are similar:

   [tex]tan 49.8=\frac{h}{32}[/tex]

[tex]h=32tan49.8 = 37.3[/tex]

Hence, throughout March and April, the cafeteria served 1020 quarts of milk.

The unitary method is a mathematical approach where issues are solved by determining a single unit rate. To relate various quantities to one another, proportions must be used. This approach is frequently employed in issues involving direct and inverse proportionality. In inverse proportionality, the product of the two quantities is constant, whereas in direct proportionality, the two numbers fluctuate in the same ratio.

given

We must first determine the total number of cups of milk served in both March and April in order to calculate the total number of quarts of milk served in both months.

4080 cups of milk totaled from 2420 + 1660 cups.

We can convert the total number of cups to quarts by dividing by 4 because 1 quart equals 4 cups:

4080 cups of milk divided by 4 equals 1020 quarts total.

Hence, throughout March and April, the cafeteria served 1020 quarts of milk.

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Option C is the correct answer. 0.17 is the probability that a randomly selected student smokes out of 500 students, given 85 smoke.

By dividing the total number of students observed (500) by the number of students who smoke (85) in this scenario, it is possible to estimate the probability of smoking among the 500 students.

This results in a ratio of 0.17, or 17%. The estimated likelihood that a randomly chosen student smokes is therefore 0.17, meaning that roughly 17 out of every 100 students in the population smoke. It is crucial to remember that this is only an estimate, and the true probability could change slightly depending on the size and sampling method.

The estimated probability does, however, have a tendency to converge to the true probability when the sample size is sufficient.

Hence, the probability that a randomly selected student smokes  is 0.17

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Answer:

Step-by-step explanation:

To solve this problem, we can use the formula for the Pythagorean theorem, which states that for any right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

In this case, we are given the length of two sides of the triangle (the legs) and we need to find the length of the hypotenuse.

Let's label the sides of the triangle:

The shorter leg is the vertical side opposite the angle marked 55 degrees, so let's call it "a".

The longer leg is the horizontal side adjacent to the angle marked 55 degrees, so let's call it "b".

The hypotenuse is the side opposite the right angle, so let's call it "c".

Using trigonometry, we can determine the value of "a" and "b":

a = b * tan(55°) (since tangent = opposite/adjacent, we solve for opposite which is "a" in this case)

a = 100 * tan(55°) = 100 * 1.428 = 142.8

b = 100

Now, we can use the Pythagorean theorem to find the length of the hypotenuse:

c^2 = a^2 + b^2

c^2 = 142.8^2 + 100^2

c^2 = 20484.84 + 10000

c^2 = 30484.84

c = sqrt(30484.84)

c ≈ 174.6

Therefore, the length of the hypotenuse is approximately 174.6 units (the units are not given in the problem, but we can assume they are consistent with the units used for the given values of "a" and "b").

The problem does not specify the orientation or scale of the graph, but we can assume that it is a right triangle with the angle marked 55 degrees in the upper left corner.

The vertical side (the shorter leg) of the triangle should be labeled with a length of approximately 142.8 units (assuming the units used for the problem are consistent with the values given for "a" and "b"). The horizontal side (the longer leg) should be labeled with a length of 100 units.

The hypotenuse (the side opposite the right angle) should be drawn as a diagonal line connecting the endpoints of the vertical and horizontal sides. The hypotenuse should be labeled with a length of approximately 174.6 units.

The angle marked 55 degrees should be labeled as such, and the other two angles of the triangle (the right angle and the angle opposite the longer leg) should be labeled accordingly.

Answer:

Step-by-step explanation:

i think it B

Answer:

multiply them fro your answer

Answer:

2x² + x - 1

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

             = (x - 1) + 2x²

             = 2x² + x - 1

Inside the sphere, the potential is given by [tex]$V(r)=\frac{Q}{4\pi\epsilon_0r}$[/tex], where Q is the total charge enclosed within the sphere. Since the sphere shell has no charge inside, Q=0, and thus V(r)=0 inside the sphere.

Outside the sphere, the potential is given by

[tex]$V(r)=\frac{Q}{4\pi\epsilon_0r} + \frac{Q'}{4\pi\epsilon_0r'}$[/tex]

where Q is the total charge of the sphere shell, Q'= σ4πR²is the charge on an imaginary sphere of radius r'>R enclosing the sphere shell, and r is the distance from the center of the sphere. Using the result from Ex. 3.9, the potential outside the sphere becomes

[tex]$V(r)=\frac{Q}{4\pi\epsilon_0r} + \frac{\sigma_0 R^2}{2\epsilon_0 r}$[/tex]

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Answer:

center: (0, -2)

radius: 6

Step-by-step explanation:

You have to "complete the square" this allows you to fold up the expressions and put the equation in a standard kinda of format where you can pick the center and radius right out of the equation.

see image.

The mixed numbers that have 12 as the LCD are 2 11/12 and 6 4/5. All other fractions do not have 12 as the denominator and are not equivalent.

Mixed numbers consist of a whole number and a fractional part. To add or subtract mixed numbers, the fractions must have the same denominator (the bottom number of the fraction).

The LCD (lowest common denominator) is the smallest number that all of the denominators can be divided into evenly. In this case, the LCD is 12.

2 11/12 and 6 4/5 both have 12 as the denominator. The denominator of 11/12 can be divided by 11 and 12, so it is the same as 12/12. The denominator of 4/5 can be divided by 4 and 12, so it is the same as 48/12 (4 x 12 = 48). Therefore, both fractions have the same denominator.

The other fractions do not have 12 as their denominator. 3 1/7 can be divided by 3, 7, and 12, so it is the same as 21/12 (3 x 7 = 21). 5 3/4 can be divided by 4, 5, and 12, so it is the same as 60/12 (4 x 5 = 60). 8 38/47 can be divided by 8, 47, and 12, so it is the same as 376/12 (8 x 47 = 376). Since none of these fractions are equal to 12/12, they are not equivalent to the other two fractions.

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Question :

Which mixed numbers have 12 as the LCD (lowest common denominator)?

2 11/12

3 1/7

5 3/4

6 4/5

8 38/47