On Monday, Jack bought 2 burgers and 3 fries for $11.25. On Tuesday, he bought 7 burgers and 5 fries
for $32.50. Find the price of each item.

Answers

Answer 1

The burgers is sold each for 3.75 dollars , while the fries is solde for 1.25 dollars each

How to solve for the equation

We would have to solve for the price of each of the items using the simultaneous linear equation method

2 burgers and 3 fries for $11.25

we would have:

Use the elimination method to solve the system of equations:

2 x+ 3 y = 11.25

7 x + 5 y = 32.50

Step 1 - Multiply Equation 1 by 7:

7 * (2x+3y=11.25) --> 14x + 21y = 78.75

Step 2 - Multiply Equation 2 by 2:

2 * (7x+5y=32.50) --> 14x + 10y = 65

Step 3 - s

14x + 21y = 78.75

-(14x + 10y = 65)

------------------------------

21y - 10y = 78.75 - 65

Step 4 - simplify and solve for y:

11y = 13.75

y  = 13.75 / 11

y = 1.25

Step 5 - now that we have solved for y, let's rearrange Equation 1 to solve for x:

2x = 11.25 - 3y

Divide each side by 2

2x / 2 = 11.25 - 3y / 2

x  =  11.25 - 3y / 2

Step 6 - we determined y = 1.25. Plug it into our Rearranged equation 1:

x  =  11.25 - 3(1.25) / 2

x  =  11.25 - 3.75 / 2

x  =  7.5 / 2

x = 3.75

Since x is the burgers which is 3.75 dollars while y is the fries which is 1.25 dollars

Read more on simultaneous linear equation here:https://brainly.com/question/26310043

#SPJ1


Related Questions

write the expression as a square of a monomial. 64x^6

Answers

The expression 64x^6 can be written as a square of a monomial by taking the square root of both sides of the expression:

√(64x^6) = √(64) * √(x^6) = 8 * x^3

So, the expression 64x^6 can be written as the square of the monomial 8x^3.

Answer: √(64x^6) = √(64) * √(x^6) = 8 * x^3 So, the expression 64x^6 can be written as the square of the monomial 8x^3. The exact thing that legoslucaswang had said but it's just a different way of saying it.

One solution to a quadratic function, h, is given.
-4 + 7i
Which statement is true?
A.
Function h has no other solutions.
B.
The other solution to function h is -4 − 7i.
C.
The other solution to function h is4 − 7i.
D.
The other solution to function h is 4 + 7i.

Answers

The correct statement is the other solution to the quadratic function h is -4-7i.

What is a quadratic function?

A quadratic function is a polynomial function with one or more variables in which the highest exponent of the variable is two.

Given that, one of the solution to a quadratic function, h, is given, -4 + 7i,

We know that,

The solution of a quadratic function, can be found by using the quadratic formula, which is given by,

x = -b±√b²-4ac / 2a

Here, ± is showing that there are two values of x one in positive and another in negative,

We have one solution = -4 + 7i

Therefore, another solution will be its opposite = -4 - 7i

Hence, the correct statement is the other solution to the quadratic function h is -4-7i.

Learn more about quadratic function, click;

https://brainly.com/question/18958913

#SPJ9

Witch equation is equivalent to n+4=11

Answers

The Equation which is Equivalent to n+4=11 is (n + 4) x 2 = 11 x 2.

What is Equivalent Expression?

Expressions that are equivalent do the same thing even when they have distinct appearances. When we enter the same value for the variable, two algebraic expressions that are equivalent have the same value.

Given:

n+4=11

Solving the Equation

n= 11-4

n= 7

1. (n + 4) x 2 = 11

2n + 8 = 11

2n = 3

n= 3/2

2. (n + 4) x 2 = 11 / 2

2n + 8 = 11/2

2n = -5/2

n = -5/4

3. (n+ 4) x2 = 11 x 4

2n+ 8 = 44

2n = 36

n= 18

4. (n + 4) x 2 = 11 x 2

2n+ 8 = 22

2n = 14

n= 7

Learn more about Equivalent Expression here:

https://brainly.com/question/12588383

#SPJ9

The Question attached here is missing the options which are as follow:

(n + 4) x 2 = 11

(n + 4) x 2 = 11 / 2

(n+ 4) x2 = 11 x 4

(n + 4) x 2 = 11 x 2

Please help answer this math problem!

Answers

Answer:

357

Step-by-step explanation:

0.22x=49.95+0.08x

Answers basically x+1

Suppose that 20 randomly selected customers give the following satisfaction ratings (on a scale of 1 to 10) for a DVD recorder N 1 1 4 4 4 4 7 7 6 8 8 8 8 9 9 9 10 10 10 Find the first quartile, the median, and the third quartile for these data (Round your answers to 1 decimal place.), Q1 Median Q3

Answers

From the given information provided, the first quartile (Q₁) is 4, the median is 8, and the third quartile (Q₃) is 9.

To find the first quartile, median, and third quartile for the given data set, we first need to arrange the data in ascending order:

1 1 4 4 4 4 6 7 7 8 8 8 8 9 9 9 10 10 10

There are 20 data points in the set, so the median is the average of the 10th and 11th values:

Median = (8 + 8) / 2 = 8

To find the first quartile (Q₁), we need to find the median of the lower half of the data set. There are 10 data points in the lower half, so the median is the average of the 5th and 6th values:

Q₁ = (4 + 4) / 2 = 4

To find the third quartile (Q₃), we need to find the median of the upper half of the data set. There are 10 data points in the upper half, so the median is the average of the 15th and 16th values:

Q₃ = (9 + 9) / 2 = 9

Learn more about median here: brainly.com/question/26177250

#SPJ4

Decide how many solutions this equation has:
x2 + 3 = 0

Decide how many solutions this equation has:
x2 - 2x + 1 = 0

Answers

how many solutions this equation has:

x2 + 3 = 0

answer : no real solution

x = + i√3

x = - i√3

Decide how many solutions this equation has:

x2 - 2x + 1 = 0

answer : has 1 solution

x=1

chatgpt

A flagpole casts a 17-foot shadow on the ground when the sun is at a 59° angle of
elevation. Which of the following expressions can be used to determine the height (h), in
feet, of the flagpole? (Assume the flagpole is perpendicular to the ground.)
A. cos59° =h/17
B. tan59° =h/17
C. sin59° =h/17
D. cot59° =h/17

Answers

The expression tan59° = h/17 can be used to determine the height (h), in feet, of the flagpole.

What is the right triangle?

A right triangle is defined as a triangle in which one angle is a right angle or two sides are perpendicular.

The height of the flagpole is the opposite side of the right triangle formed by the flagpole, its shadow on the ground, and the line from the top of the flagpole to the end of the shadow.

The angle of elevation of the sun is opposite the height of the flagpole, and the length of the shadow is the adjacent side.

Therefore, the tan of the angle of elevation is equal to the height of the flagpole divided by the length of the shadow:

tan59° = h/17

Thus, the correct expression to determine the height of the flagpole is:

B. tan59° = h/17

Learn more about the right triangle here:

https://brainly.com/question/11899922

#SPJ1

I need to complete the tables using the equation..

Answers

The values of y when the equation is y = 8x + 5 will be -3,5,13,21,29.

How to calculate the values

An 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.

Since y = 8x + 5

when x = -1, y will be:

= 8(-1) + 5

= -3

when x = 0, y will be:

= 8(0) + 5

= 5

when x = 1, y will be:

= 8(1) + 5

= 13

when x = 2, y will be:

= 8(2) + 5

= 21

when x = 3, y will be:

= 8(3) + 5

= 29

Learn more about equations on:

https://brainly.com/question/2972832

#SPJ1

The Garcia family drew a circle graph of their budget that contained the following: Taxes, 20% Rent, 32% Food, 20% Utilities, 5% Gas, 13% Miscellaneous, 12% What would you tell the family concerning the data?​

Answers

If the Garcia family drew a circle graph of their budget I would tell the Garcia family that the circle graph shows the percentage breakdown of their budget.

What would you tell the family concerning the data?​

The largest portion of their budget is going towards rent, followed by taxes and food. Utilities, gas, and miscellaneous expenses make up smaller portions of their budget.

It may be helpful for the family to further analyze their spending in each category to see if any adjustments can be made to better align with their financial goals.

Learn more about budget here:https://brainly.com/question/6663636

#SPJ1

Work out
a) √11 × √11
b) √5 × √5 x√√2 × √2
c) √6 × √6 × √6 x
Note: Please leave your answer in surd form when appropriate.

Answers

The result of the evaluation of each of the expression are as follows;

a). 11b). 10c). 6√6 x.

What are the results of.the expressions evaluation?

Recall that; √a × √a = a.

As evident in the task content; the results of the expressions are as follows;

a). √11 × √11 = 11.

b). √5 × √5 x √2 × √2 = 5 × 2 = 10.

c). √6 × √6 × √6 x = 6√6 x.

Ultimately, the results are as evaluated above.

Read more on surds;

https://brainly.com/question/24700530

#SPJ1

In the figure, triangle UVW is similar to triangle RST, VU=48, VW=26, and SR=24.

What is the value of x? Show all your work.

Answers

x = 13

set the problem up using ratios.

given VU = 48, VW = 26 and SR = 24, find ST = x

VW / VU = ST / SR

26 / 48 = x / 24 and solve for x.

x = 13

c) Find the perimeter

Answers

The measure of the perimeter of the shape is 12.78cm

Finding the perimeter of a composite figure

The given figure consists if a right triangle and a semicircle. The perimeter of the shape is calculated using the expression;

Perimeter = perimeter of the semicircle + 4.5cm + 2cm

Perimeter of the figure = πr + 6.5cm

Perimeter of the figure = 3.14(2) + 6.5

Perimeter of the figure = 6.28 + 6.5

Perimeter of the figure = 12.78cm

Hence the perimeter of the given composite figure is 12.78cm

Learn more on perimeter of composite figure here: https://brainly.com/question/16247505

#SPJ1

14 friends are saving money for a trip to the movies. 6 of the friends put $1.50 into the
pile every day, while others put $1.50 into the pile every even day, and the rest of the
friends put $1.50 into the pile every odd day. If $12 was put into the pile on February
3rd, how much money will be put into the pile on February 4th?

Answers

Answer:

UM I THINK ITS 1500

Step-by-step explanation:

, $18 will be put into the pile on February 4th.

What is expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given, 14 friends are saving money for a trip to the movies

On February 3rd, a total of $12 was put into the pile. Let's find out how many friends put money into the pile that day.

The 6 friends who put $1.50 into the pile every day contributed:

6 friends x $1.50/friend/day = $9/day

So, on February 3rd, they would have contributed $9.

Let's assume that there are x friends who put $1.50 into the pile every even day.

Since February 3rd was an odd day, none of these friends would have contributed on that day.

Similarly, let's assume that there are y friends who put $1.50 into the pile every odd day.

Since February 3rd was an odd day,

y friends would have contributed $1.50 each, for a total of $1.50y.

Therefore, we can set up an equation to solve for y:

$9 + $1.50y = $12

Simplifying this equation, we get:

$1.50y = $3

y = 2

So, there are 2 friends who put $1.50 into the pile every odd day.

Thus, friends who contribute on even day are = 14 -6 -2 = 6

So,

on 4th February total money collected = money added by the friends who adds money  every day + money added by the friends who adds money on even days.

Thus,

on 4th February total money collected = 6*1.5 + 6*1.5 = 9 + 9 =18

Therefore, $18 will be put into the pile on February 4th.

Learn more about expression here:

https://brainly.com/question/14083225

#SPJ2

Referring to the figure, evaluate the expression shown
when a = 3, b = 7, c = 2

Answers

Answer:

5

Step-by-step explanation:

which of the following is always true for all probability density functions of continuous random variables? group of answer choices they are symmetrical they are bell-shaped the area under the curve is 1.0 they have the same height

Answers

True, for all probability density functions of continuous random variables that the area under the curve is 1.0, but they do not have to be symmetrical or bell-shaped, and they do not have the same height.

A continuous random variable is a random variable that can take any value within a certain range, such as time or distance. Probability density functions (PDFs) describe the probability distribution of continuous random variables, and they have some important properties that hold true for all of them.

The first property of a PDF is that the area under the curve is always equal to 1.0. This means that the total probability of all possible outcomes of the random variable is equal to 1.0.

The second property is that PDFs do not have to be symmetrical or bell-shaped. The shape of the PDF depends on the distribution of the data.

The third property is that PDFs do not have the same height. The height of the PDF depends on the distribution of the data and the range of values that the random variable can take. The height of the PDF represents the density of the probability distribution for a given value.

To know more about probability here.

https://brainly.com/question/11234923

#SPJ4

let fxn; n 0g be a dtmc on state space f1; 2; : : : ; ng. suppose it incurs a cost of c.i / dollars every time it visits state i. let g.i / be the total expected cost incurred by the dtmc until it visits state n starting from state i. derive the following equations: g.n / d0; g.i / dc.i / c pn jd1 pi;j g.j /; 1 j n 1

Answers

We can derive the equations using the principle of optimality for Markov decision processes. This principle states that an optimal policy for a process must satisfy the property that whatever the initial state and initial decision are, the remaining decisions must constitute an optimal policy with regard to the state resulting from the first decision.

Let g(i) denote the total expected cost incurred by the DTMC until it visits state n starting from state i. We can express this as:

g(i) = c(i) + p(i, i+1)g(i+1) + p(i, i+2)g(i+2) + ... + p(i, n-1)g(n-1)

Here, p(i, j) denotes the transition probability from state i to state j. The first term c(i) represents the cost incurred by visiting state i for the first time, and the second term p(i, i+1)g(i+1) represents the expected cost of moving from state i to state i+1 and continuing optimally from state i+1. The same applies to the following terms, with the last term p(i, n-1)g(n-1) representing the expected cost of moving from state i to state n-1 and continuing optimally from state n-1 to state n.

To solve for g(n), we note that the expected cost to reach state n from state n is zero since we are already at the target state. Therefore, we have:

g(n) = 0

Now, we can use the principle of optimality to solve for the remaining g(i)'s. Specifically, we consider the expected cost of moving from state i to state i+1 and continuing optimally from state i+1. This can be expressed as:

c(i) + p(i, i+1)g(i+1)

The optimal decision is to minimize this cost, which can be achieved by choosing the state j that minimizes the cost of moving from state i to state j and continuing optimally from state j. Therefore, we have:

g(i) = c(i) + min_j{p(i, j)g(j)}, for 1 <= i < n

This equation states that the expected cost of visiting state i and continuing optimally to state n is the sum of the cost of visiting state i and the expected cost of moving from state i to the state j that minimizes the expected cost of moving from state i to state j and continuing optimally from state j.

Combining the two equations, we obtain the desired results:

g(n) = 0

g(i) = c(i) + min_j{p(i, j)g(j)}, for 1 <= i < n

To know more about optimality for Markov:

https://brainly.com/question/29764916

#SPJ4

I need help please i dont understand this

Answers

The distance from where it is tied to the base of the pole is 7.25ft

Solving angles of elevation and depression

Then given resulting figure that translated the statement is a right triangle with the following

Hypotenuse = 28 feet

Angles made with the base = 15 degrees

The distance from where it is tied to the base of the pole (height of the triangle) is required

Using the trigonometry identity

sin theta = opposite/hypotenuse

sin 15 = h/28

h = 28sin15

h = 7.25ft

Hence the distance from where it is tied to the base of the pole is 7.25ft

Learn more on angle of elevation here: https://brainly.com/question/88158

#SPJ1

write each number as fraction or mixed number in simplest form 9.355

Answers

The fraction form or mixed number in simplest form of number 9.355 is,

⇒ 1871 / 200

What is mean by Fraction?

The number is expressed as a quotient in which the numerator is divided by the denominator is called fraction.

Given that;

The number is,

⇒ 9.355

Now, We can simplify the number to change in fraction as,

⇒ 9.355

Multiply and divide by 1000;

⇒ 9355/1000

Multiply and divide by 5;

⇒ 1871 / 200

Thus, We get;

The fraction form or mixed number in simplest form of number 9.355 is,

⇒ 1871 / 200

Learn more about the fraction visit:

https://brainly.com/question/5454147

#SPJ9

write a function count element : 'a list -> 'a -> int such that count element l m returns the number of elements in the input list l that are equal to m. the function is required to use (only) tail recursion (no other form of recursion). you may not use any library functions.

Answers

Here's an implementation of the "count_element" function in OCaml:

 | x :: xs -> count (if x = m then acc + 1 else acc) xs

 in count 0 l

ocaml

let count_element l m =

 let rec count acc = function

   | [] -> acc

  x = m, then acc + 1; otherwise, acc) | x:: xs -> count 0 xs in count

The function takes a list l and a value m to count, and returns the number of elements in the list that are equal to m. The function uses tail recursion by accumulating the count of matching elements in the acc variable, which is passed along with the remaining list to the recursive call.

The base case is when the input list is empty, in which case the accumulated count is returned. The recursive case checks whether the head of the list matches the target value, and updates the accumulator accordingly. The function then recurses on the tail of the list.

Note that the function is not specific to any particular type of elements in the list, so it should work with any type that supports equality.

TO learn more about  function count element : 'a list -> 'a ->  :

https://brainly.com/question/15900095

#SPJ4

The tailgate of a truck is 2 feet above the ground. The incline of a ramp used for loading the truck is 11°, as shown below. 2' 11° Find, to the nearest tenth of a foot, the length of the ramp.​

Answers

The required length of the ramp is approximately 10.4 feet.

What is trigonometry?

Trigonometry is essentially the study of triangle calculations (hence the name trigonometry). It is a mathematical study of connections involving the lengths, heights, and angles of various triangles. The discipline was created in the third century BC as a result of the use of geometry in astronomical research.

According to question:

Let's call the length of the ramp "x". We can then use the sine function to relate the angle and the height of the ramp:

sin(11°) = opposite/hypotenuse

sin(11°) = 2/x

We can then solve for x:

x = 2/sin(11°)

x ≈ 10.4 feet

Therefore, the length of the ramp is approximately 10.4 feet.

To know more about Trigonometry visit:

brainly.com/question/29002217

#SPJ1

How much does the water in a 6-person hot tub weigh?

Answers

Answer: A six-person model typically weighs approximately 1,000 pounds empty or 6,000 pounds full.

A function is defined by the equation f(x) = 2x - 5.
a. What is f(0)?
b. What is ƒ(1/2)?
c. What is f(100)?
d. What is x when f(x) = 9?

Answers

Answer:

a. f(0)= -5

b. f(1/2) = -4

c. f(100) = 195

d. x = 7

Step-by-step explanation:

Given that,

f(x) = 2x - 5 .........(1)

a)

Putting x = 0 in equation (1), we have

f(0) = 2(0) -5 = 0 - 5 = -5

b)

Putting x = 1/2 in equation (1), We have

f(1/2) = 2(1/2) -5 = 1 - 5 = -4

c)

Putting x = 100 in equation (1), We have

f(100) = 2(100) -5 = 200 - 5 = 195

d)

Putting f(x) = 9 in equation (1), We have

9 = 2x - 5

⇒ 2x = 9 + 5

⇒ 2x = 14

⇒ x = 14/2

x = 7

Let f(x) = 4x2 – 63. We want to estimate f(3.05) using linear approximations. That is, using an appropriate tangent line. First, we will build the tangent line at (x, y)=_____ Enter as an ordered pair (a,b). The slope of the tangent line comes from f'. For this problem, f'(x) = ______
And mtan = _____
The equation of the tangent line, in slope intercept form, is y = T(x) = ______
Now, f(3.05) = T(3.05) =______
Compare to actual value f(3.05) =_____

Answers

The tangent line at (x, y) = (3, 33) is y = 25x + 8.Enter as an ordered pair (a,b). The slope of the tangent line comes from f'. For this problem,f'(x) = 8x. And mtan = f'(3) = 24.The equation of the tangent line in slope-intercept form is y = T(x) = 24x - 69.

T(3.05) = 24(3.05) - 69 = -18.2.

f(3.05) = 4(3.05)^2 - 63 = -16.73.

We want to estimate the value of f(x) = 4x^2 - 63 at x = 3.05 using linear approximations. This means we need to find the equation of the tangent line to the graph of f at x = 3, which will give us a good approximation of f(3.05) near x = 3.

To find the tangent line, we first need to find the slope of the tangent line, which is given by the derivative of f at x = 3. We have f(x) = 4x^2 - 63, so f'(x) = 8x. Therefore, f'(3) = 24, which is the slope of the tangent line at x = 3.

Next, we need to find a point on the tangent line. We can use the point (x, y) = (3, 33), which is on the graph of f and also happens to be at x = 3. This means the tangent line at (3, 33) will be very close to the graph of f near x = 3.

Using the point-slope form of a line, we can find the equation of the tangent line at (3, 33):

y - 33 = 24(x - 3)

Simplifying this equation gives us the slope-intercept form of the tangent line:

y = 24x - 69

Now we can use this equation to estimate the value of f(3.05) by plugging in x = 3.05:

T(3.05) = 24(3.05) - 69 = -18.2

This means the tangent line predicts that f(3.05) is approximately -18.2.

To compare this to the actual value of f(3.05), we can plug it into the original function:

f(3.05) = 4(3.05)^2 - 63 = -16.73

So the actual value of f(3.05) is approximately -16.73, which is close to the estimate given by the tangent line.

In summary, using linear approximations, we found that the tangent line at (3, 33) has a slope of 24 and passes through the point (3, 33). The equation of the tangent line is y = 24x - 69. Using this equation, we estimated that f(3.05) is approximately -18.2, which is close to the actual value of -16.73.

For more questions like Tangent line click the link below:

https://brainly.com/question/23265136

#SPJ4

use the distributive property to create an equivalent expression.
7(x +2y + 3z)

Pls help

Answers

7 (x + 2y + 3z)

Distribute 7

7x + 7 x 2y + 7 x 3z

Calculate

7x + 14y + 21z should be your answer.

5) h(x) = -2x² - 5
g(x) = 2x - 1
Find (h•g)(x)

Answers

The value of of function is  -8x² + 8x - 7.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

In mathematics, a function is an expression, rule, or law that describes the relationship between one variable (the independent variable) and another variable (the dependent variable) (the dependent variable). In mathematics and the physical sciences, functions are indispensable for formulating physical relationships.

Linear function is a function whose graph is a straight line

We are given that;

The function h(x) = -2x² - 5 and g(x) = 2x - 1

Now,

To find (h•g)(x), we need to first evaluate the composition of functions h(g(x)):

h(g(x)) = -2(2x - 1)² - 5 [substituting g(x) into h(x)]

= -2(4x² - 4x + 1) - 5

= -8x² + 8x - 7

Therefore, the function (h•g)(x) will be equal to -8x² + 8x - 7.

Learn more about function here:

https://brainly.com/question/2253924

#SPJ1

can you plese do this

Answers

The vector is (-3, 4) and its x and y components are -3 and 4.

What are Vectors?

A quantity or phenomena with independent qualities for both magnitude and direction is called a vector. The term can also refer to a quantity's mathematical or geometrical representation. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields and weight.

Given:

Vector v have an initial point at (3, -5) and a terminal point at (0, -1).

It initial point of a vector is (a, b) and terminal point is (c, d), then the vector is

v= (c-a, d-b)

We have (a, b) = (3, -5) and (c, d) = (0, -1)

Then, vector v is defied as

v = (0 - 3, -1 - (-5))

v = (-3, -1+5)

v = (-3, 4)

Learn more about vectors here:

https://brainly.com/question/20566503

#SPJ1

When comparing the machining techniques for stainless steel sheet material to those for aluminum alloy sheet, it is normally considered good practice to drill the stainless steel at a
answer choices
A-higher speed with less pressure applied to the drill.
B-lower speed with more pressure applied to the drill.
C-lower speed with less pressure applied to the drill.

Answers

When comparing the machining techniques for stainless steel sheet material to those for aluminum alloy sheets, it is normally considered good practice to drill the stainless steel at a lower speed with less pressure applied to the drill. Hence, option C is the required accurate answer.

Stainless steel is a much harder and tougher material compared to aluminum, which makes it more difficult to machine.

Drilling at a higher speed with more pressure applied to the drill can cause the drill to overheat and wear out faster, resulting in lower-quality holes and increased production time.

Whereas, drilling at a lower speed with less pressure applied to the drill helps to reduce the risk of overheating, allows the drill to maintain its sharpness, and helps to produce higher-quality holes.

Read more about Stainless steel:

brainly.com/question/28448322

#SPJ4

A random rectangle is formed in the following way: The base, X, is chosen to be a uniform [0, 1] random variable and after having generated the base, the height is chosen to be uniform on [0, X]. Use the law of total expectation, Theorem A of Section 4.4.1, to find the expected circumference and area of the rectangle.

Answers

Using the law of total expectation, the expected circumference of the rectangle is 3/2, and the expected area of the rectangle is 1/6.

Let C and A denote the circumference and area of the rectangle, respectively. Then we have:

E[C] = E[C|X] * P(X) + E[C|X'] * P(X')

where X' is the complement of X, and P(X) and P(X') are the probabilities of X and X' respectively. Since X is a uniform [0, 1] random variable, we have P(X) = 1 and P(X') = 0.

Therefore, we can simplify the above expression to:

E[C] = E[C|X]

To find E[C|X], we can use the formula for the circumference of a rectangle:

C = 2 * (base + height)

Substituting in the values for the base and height of the rectangle, we get:

C = 2 * (X + U[0, X])

where U[0, X] denotes a uniform random variable on [0, X].

Then, we can find the expected value of C given X as follows:

E[C|X] = E[2*(X+U[0,X])|X]

= 2*(X+E[U[0,X]|X])

where we have used the linearity of expectation. Note that E[U[0,X]|X] is simply the expected value of a uniform random variable on [0, X], which is X/2.

Therefore, we have:

E[C|X] = 2*(X+X/2) = 3X

Substituting this back into the expression for E[C], we get:

E[C] = E[3X] = 3E[X]

Since X is a uniform [0, 1] random variable, we have E[X] = 1/2. Therefore, the expected circumference of the rectangle is:

E[C] = 3E[X] = 3/2

Similarly, we can use the Law of Total Expectation to find the expected area of the rectangle by conditioning on X:

E[A] = E[A|X] * P(X) + E[A|X'] * P(X')

where, again, we have P(X) = 1 and P(X') = 0. Therefore, we can simplify the expression to:

E[A] = E[A|X]

To find E[A|X], we can use the formula for the area of a rectangle:

A = base * height

Substituting in the values for the base and height of the rectangle, we get:

A = X * U[0, X]

where U[0, X] denotes a uniform random variable on [0, X].

Then, we can find the expected value of A given X as follows:

E[A|X] = E[XU[0,X]|X]

= XE[U[0,X]|X]

where we have again used the linearity of expectation. Note that E[U[0,X]|X] is X/2, as before.

Therefore, we have:

E[A|X] = X * (X/2) = X^2/2

Substituting this back into the expression for E[A], we get,

E[A] = E[X^2/2] = 1/2 * E[X^2]

To find E[X^2], we can use the formula for the variance of a uniform [0, 1] random variable:

Var(X) = E[X^2] - (E[X])^2 = 1/12

Solving for E[X^2], we get:

E[X^2] = Var(X) + (E[X])^2 = 1/12 + (1/2)^2 = 1/3

Substituting this back into the expression for E[A], we get:

E[A] = 1/2 * E[X^2] = 1/6

Therefore, the expected area of the rectangle is:

E[A] = 1/6

To learn more about random variable click on,

https://brainly.com/question/29807681

#SPJ4

What is the length of the third side, or c?

Answers

The length of the third side or c=30 feet.

What is length?

Length is defined as the measurement of distance of an object from one end to the other.

The  length of the sides of a triangle is given by ,

a=24 feet, b=18 feet. c=?.

By Pythagorean theorem,

“In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“.

[tex]c^{2}=a^{2} +b^{2}[/tex]

[tex]c^{2} = 24^{2} +18^2[/tex]

   = 900

c=30 feet.

Hence, the length of the third side or c=30 feet.

Question:

The given diagram forms the triangle with the length of the sides ,

a=24 feet, b=18 feet. Find the length of the side c.

Learn more about length here:

https://brainly.com/question/4953287

#SPJ9

Using the PERIOD method, design an experiment that compares how four different tires perform. You decide to run an experiment that tests all four tires on dry, damp, and wet roads for decelerations
lerations of 1, 3, 5, 7, and 9 m/s². If each experiment is repeated two times, how many measurements are needed?
measurements are needed. (Type a whole number)

Answers

640 measurements are needed to compare the performance of four different tires on dry, damp, and wet roads for decelerations of 1, 3, 5, 7, and 9 m/s², with two measurements per experiment.

How did we get the value?

The PERIOD method stands for:

P: Performance metric (Deceleration)

E: Environmental condition (Dry, Damp, Wet)

R: Replicates (Two measurements per experiment)

I: Inputs (Four tires)

O: Output (Measurement result)

D: Design (Full factorial)

The number of measurements can be calculated as:

Measurements = R * (number of inputs)^E * P

In this experiment, there are:

R = 2 replicates

E = 3 environmental conditions (Dry, Damp, Wet)

P = 5 different decelerations (1, 3, 5, 7, 9 m/s²)

Inputs = 4 tires

Therefore, the number of measurements can be calculated as:

Measurements = 2 * 4^3 * 5 = 2 * 64 * 5 = 640

So, 640 measurements are needed to compare the performance of four different tires on dry, damp, and wet roads for decelerations of 1, 3, 5, 7, and 9 m/s², with two measurements per experiment.

learn more about measurements: https://brainly.com/question/27233632

#SPJ1

Other Questions
Which of the following are examples of an economic signal?a) The market price for toilet paper has not changed over the last 10 years.b) Companies begin hiring more people after a long period of high unemployment in the U.S.c) Prices in housing markets fall.d) Purchases of floppy disks and CDs decline dramatically as the demand for online streaming of similargoods increases. What limits the lifespan or lifetime of data in a computer or network?ARPTTLACKSYN The reserved powers of the state governments can best be described as those powersResponsesExercised by both nation and state governmentExercised by both nation and state governmentNot specifically granted to the nation government or denied to the statesNot specifically granted to the nation government or denied to the statesListed specifically in the 10th amendmentListed specifically in the 10th amendmentGranted to states as part of the necessary and proper clause A) In the sequence for which the general term is t_(n)=(n^(2)-1)/(3n^(2)),find the value of n, if any, for which t_(n)=0.3325. B) Find S_(n) for the arithmetic series 16+13+10+cdots and determine the value of n for which S_(n)=-6.S_(n)=. The value of n for which S_(n)=-6 is . Beverly reviewed Nickis' personnel files and determined that there was no documentation that Nicki had previously been reported for neglect of her duties. When using the progressive discipline process, what actions should Beverly plan? rank the following in chronological order of how scientists think meteorites or comets striking earth caused mass extinctions, beginning with the first event at the top of the list. why is the right renal artery longer than the left renal artery? what is the second-largest surface transportation mode Agency: Group of answer choices:A. Refers to a person's ability to act according to their own willB. Is shaped by the structural rules a person encounters and the resources at their disposalC. Both A and BD. None of the above 4. What is found in the C horizon of a soil profile?A. Partially weathered rockB.the subsoil layerC. topsoilD. Mostly humus and litter the primary mirror of telescope a has a diameter of 20 cm, and telescope b has a diameter of 100 cm. how do the light gathering powers of these two telescopes compare? Revenge. Jane, a first-year law student, while walking to school in inclement weather, accidentally slipped on ice knocking down Greg, another first-year law student, breaking his glasses. He was very angry with Jane and let the air out of one of her car tires. Greg also decided to sue Jane for negligence, claiming as damages $300 for his broken glasses. He decided that he already knew all about the law and did not need a lawyer. Greg sued Jane in state court. Jane, in the same lawsuit, brought an action against Greg for letting the air out of her tire. At trial in state court, Jane told the judge that a friend, Susie, told her that she saw Greg let the air out of Jane's tire. The judge disallowed Jane's testimony on that issue. Susie, however, who was in the courtroom also came and testified to that effect. The state court judge ruled in favor of Jane. Greg said that he was not giving up and that he would seek double damages on appeal in federal court. Jane and Greg live in different states when not attending school. After trial, Jane reported Greg's actions in letting the air out of her tire to the police who said that they would proceed with a criminal action against Greg. Was the judge correct in disallowing Jane's testimony regarding what Susie told her about the tire? Multiple Choice Yes, the judge was correct to disallow the testimony because Susie's testimony was better evidence and she was in the courtroom Yes, the judge was correct to disallow the testimony because it was offered by a defendant, not an independent witness No, the judge was wrong and should have considered that testimony when he re-recorded the song layla eric clapton chose a tempo when he re-recorded the song layla eric clapton chose a tempo louder softer slower faster What is the value of 300m in miles What is the value of root 216? For "The Youngest Dolls" 1. Analyze the story to find two or three details that represent realism. Then find at least one detail that represents the magical aspect of the magic realism genre. What truth does the author express through joining realism with the fantastic? 2. Cite an action or speech by the aunt that you feel represents her main goal in life. Explain your choice. Briefly cite the main differences between ionic, covalent, and metallic bonding. (B) state the Pauli exclusion principle. The following angles are given in degrees and fractions of degrees. Rewrite them in degrees, arcminutes, and arcseconds.A. 24.2 degrees?B. 1.56 degrees?C. 0.1 degrees?D. 0.01 degrees?E. 0.001 degrees? A nurse is providing discharge teaching to a client who has AIDS about preventing infection while at home. Which of the following instructions should the nurse include in the teaching?a. "Wash your genitalia using an antimicrobial soap."b. "Rinse your dishes with cold water."c. "Clean your toothbrush once per month."d. "Incorporate raw fruits and vegetables into your diet." Raindrops acquire an electric charge as they fall. Suppose a 2.5-mm-diameter drop has a charge of +15 pC.If the strength of the earth's electric field is 100 N/CN/C, how does the magnitude of the electric force on the droplet compare to the weight force?