Need help solving these two questions

Answer:

Deniz's expected winnings if she chooses rock are $30. If she chooses paper, her expected winnings are $20. If Deniz wants the best payoff in the long run, she should choose paper.

Expected winnings for rock:

Deniz wins against scissors with probability of 30%, and loses against paper with probability of 20%, so her expected winnings are (0.3100) - (0.2100) = 30

Expected winnings for paper:

Deniz wins against rock with probability of 50%, and loses against scissors with probability of 30%, so her expected winnings are (0.5100) - (0.3100) = 20

Answer:

Step-by-step explanation:

−x is always equal to a negative integer is an incorrect statement.

The student is not correct.

What is Number system?

A number system is defined as a system of writing to express numbers.

−x is always equal to a negative integer when x is positive integer

The functions can be simplified and ordered as follows (from smallest to largest):

1. O(1) = constant functions

2. O(log n) = logarithmic functions

3. O(√n) = square root functions

4. O(n log n) = log-linear functions

5. O(n²) = quadratic functions

6. O(n² / log n) = "quasi-quadratic" functions

This is a description of the concept of big-O notation and asymptotic analysis in computer science. Big-O notation is used to describe the upper bound of the growth rate of a function. It provides a way to classify functions based on how quickly they grow relative to the input size. Asymptotic analysis, on the other hand, is the study of the behavior of functions as the input size approaches infinity.

The purpose of this analysis is to determine which algorithms are the most efficient for a given problem. By understanding the asymptotic behavior of functions, we can make informed decisions about the trade-offs between different algorithms and choose the one that is best suited for a particular problem.

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Answer:

the answer is

1/8, 3/24, 5/40

Ordinary differential equation together with an initial condition which specifies the value of the unknown function at a given point in the domain.

A function’s initial value is its value when x equals zero. This is equivalent to the y-intercept. The graph shows that our line crosses the y-axis at point zero, eight. As a result, the starting value is eight. We’ll use SymPy’s solution() function to solve the two equations for the two variables x and y. The solution() method accepts two arguments: a pair of equations (eq1, eq2) and a pair of variables to solve for (x, y). A Python dictionary serves as the SymPy solution object.

The initial value, also known as the y-intercept, is the output value of a linear function when the input is 0.

The continuous solution to the initial value issue given by the linear equation with a forcing component q1x2 is one that meets the starting conditions and holds true across the whole range of x values. The equation's answer is provided by:

C1e(q1x2) + C2x + C3 = y(x).

Where C1, C2, and C3 are starting conditions-determined constants. To obtain the answer, use the beginning conditions to solve for C1, C2, and C3.

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The complete question is: What is the continuous solution to the initial value problem given by the linear equation with a forcing term q1x2?

The value of the segment BA for the similar triangles is equal to 12.6.

The triangles ABC and ADE are similar, this implies that the length EA of the smaller triangle is similar to the length CA of the larger triangle

and the length DA of the smaller triangle is similar to the length BA of the larger triangle

so;

DA/BA = EA/CA

DA/(7 + DA) = 3.2/7.2

7.2DA = 3.2(7 + DA) {cross multiplication}

7.2DA = 22.4 + 3.2DA

7.2DA - 3.2DA = 22.4

4DA = 22.4

DA = 22.4/4 {divide through by 4}

DA = 5.6

BA = 7 + DA = 12.6

Therefore, the value of the segment BA for the similar triangles is equal to 12.6.

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The values for k for which the given curve y = (k + 1) x² - 3x + (k + 1) lies below the X axis are k < -5/2 and k > 1/2.

Quadratic functions are defined as the kind of polynomial functions with the greatest degree of the independent variable equals 2.

A quadratic function can be generally represented as f(x) = ax² + b x + c.

The given function is y = (k + 1) x² - 3x + (k + 1), which is quadratic.

The graph of a quadratic function is a parabola.

If the curve lies below the X axis, then the curve will not touch the X axis.

Then the graph will be an inverted parabola, which does not touch the X axis.

So the function will not have values equal to zero.

That is y ≠ 0

So the function does not have real roots.

So the discriminant of the function f(x) = ax² + b x + c, which is [tex]\sqrt{b^2-4ac}[/tex]  will be negative.

Discriminant of the given function is [tex](-3)^2-[4 (k+1)(k+1)][/tex]. [tex](-3)^2-[4 (k+1)(k+1)][/tex] < 0

9 - 4(k + 1)² < 0

9 - 4(k² + 2k + 1) < 0

9 - 4k² - 8k - 4 < 0

-4k² - 8k + 5 < 0

Dividing throughout by -1,

4k² + 8k - 5 > 0

Let 4k² + 8k - 5 = 0

k = [ -8 ± √[(8)² - (4 × 4 × (-5)] / (2 × 4)

  = [ -8 ± √144 ] / 8

  = [-8 ± 12] / 8

Zeroes are k = 4/8 = 1/2 and k = -20/8 = -5/2

4k² + 8k -5 = 0 when k = 1/2 and k = -5/2

4k² + 8k -5 > 0, when k > 1/2 and k < -5/2

Hence the set of values of k are k > 1/2 and k < -5/2 for which the given function lies below the X axis.

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The answer is 1) V = [tex]2\pi\int\limits(2)+ {x} \, dx[/tex]; 2) V = [tex]2\pi \int\limits(1 - 2x) - 2x dx[/tex]; 3) V =[tex]2\pi \int\limits {\sqrt{2} } \, dx[/tex] ; 4) V = [tex]2\pi\int\limits {\sqrt{(-2/2)(2-2)} \ dx[/tex] .

1) The volume of the shell is then given by the product of the area of its curved surface and its height. The height is equal to 2 - (-2) = 4, and the radius is equal to the minimum of the distances from x = 2 to the two curves, which is x = 2 - () = 2 + . The volume of the solid is then given by the definite integral:

V = [tex]2\pi\int\limits(2)+ {x} \, dx[/tex] = [tex]2\pi [(/3) + 2x][/tex] evaluated from 0 to 1 = (4/3)π.

2) The height of the region is equal to  - (2x) =  -2x, and the radius is equal to the minimum of the distances from x = 1 to the two curves, which is x = 1 - (2x) = 1 - 2x. The volume of the solid is then given by:

V = [tex]2\pi \int\limits(1 - 2x) - 2x dx[/tex]=[tex]2\pi [/5 - 2/3 + /2][/tex] evaluated from 0 to 1 = (8π/15).

3) The height of the region is equal to (2-x) -  = 2-x. The radius is equal to the minimum of the distances from x = 0 to the two curves, which is x = The volume of the solid is then given by:

V =[tex]2\pi \int\limits {\sqrt{2} } \, dx[/tex] = [tex]2\pi [(x^4/4)][/tex] evaluated from 0 to √2 = (π/2).

4) The height of the region is equal to () - (2-) = 2 - 2. The radius is equal to the minimum of the distances from x = 0 to the two curves, which is x = √((2-)/2). The volume of the solid is then given by:

V = [tex]2\pi\int\limits {\sqrt{(-2/2)(2-2)} \ dx[/tex] = [tex]4\pi [(2/3)\± (2\sqrt{2} /3)][/tex]

The complete Question is:

Use the shell method to find the volumes of the solids generated by revolving the regions bounded by the curves and lines in about the

1.  y = x, y = -x/2, and x = 2

2. y = 2x, y = x/2, and x = 1

3. y = x/2, y = 2-x, and x = 0

4. y = 2-x/2, y = x/2, and x = 0

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The height of the cylinder-shaped pool is approximately 0.5 feet. The equation is h = 56.52 / (3.14 × 6²)

The equation to determine the height of a cylinder-shaped pool can be found using the formula for the volume of a cylinder:

V = πr²h

Where V is the volume, π is the constant pi, r is the radius of the pool, and h is the height.

Given that the volume is 56.52 cubic feet and the radius of the pool is 6 feet, we can substitute these values into the equation:

56.52 = π * 6² * h

Dividing both sides by π * 6²:

h = 56.52 / (π * 6²)

Using the approximate value of π as 3.14:

h = 56.52 / (3.14 * 6²)

So the equation to determine the height of the cylinder-shaped pool is:

h = 56.52 / (3.14 * 6²)

And the correct answer choices would be:

h = 56.52 / (π * 6²)

π = 3.14

r = 6

The equation would look like this:

h = 56.52 / (3.14 * 6²)

The equation h = 56.52 / (3.14 * 6²) is used to determine the height of a cylinder-shaped pool.

To find the actual value of h, we need to simplify the equation by substituting the value of π as 3.14 and the radius of the pool as 6:

h = 56.52 / (3.14 * 6²)

h = 56.52 / (3.14 * 36)

h = 56.52 / 113.04

h = 0.5

So the height of the cylinder-shaped pool is approximately 0.5 feet.

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The kernel of A is {(0,0,1,0)^T} and  the basis is {(1,0,2,4)^T, (0,1,0,-3)^T}.

The kernel of a matrix A is the set of all vectors x such that Ax = 0, where 0 is the zero vector.

To find a basis for the kernel of A, we can row reduce the augmented matrix [A | 0] to reduced row echelon form using Gaussian elimination.

The row reduced echelon form of the matrix A is

1 0 2 4

0 1 0 -3

0 0 0 0

0 0 0 0

Write out the elements in the second column

0 1 0 0

Reverse the elements

0 0 1 0

So, the basis for the kernel of A is {(0,0,1,0)^T}.

The image of a matrix A is the set of all linear combinations of the columns of A.

So, the basis for the image of A is {(1,0,2,4)^T, (0,1,0,-3)^T}.

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Answer:C

Step-by-step explanation:

the filled in circle means that it is equal to as well as lesser than or greater than where as a hollow circle means it is just lesser/greater than.

The expression to represent the cost of x monitors and chairs is 525x + 1450.

A system of equations in algebra consists of two or more equations and looks for common answers to the equations. "A set of equations satisfied by the same set of variables is called a system of linear equations."

Given that:

The cost to produce x monitors is:

350x + 1500

The cost to produce x chairs is:

175x - 50

We have to find the total cost of x monitors and chairs.

Total cost of x monitors and chairs = cost to produce x monitors + cost to produce x chairs

Substitute the equations:

Total cost of x monitors and chairs = (350x + 1500) + (175x - 50)

Total cost of x monitors and chairs = 350x + 1500 + 175x - 50

Total cost of x monitors and chairs = 525x + 1450

Hence, the expression to represent the cost of x monitors and chairs is 525x + 1450.

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The characteristics of a dataset indicate that linear regression (the kind we know how to do) may NOT be appropriate are, The data are drawn from 2 or more distinct groups, and A scatterplot of the data looks like a V.

These two characteristics indicate that linear regression may not be appropriate because the linear regression model assumes a linear relationship between the independent variable(s) and the dependent variable.

If the data are drawn from two or more distinct groups, this may indicate multiple relationships; therefore, a linear model may not be appropriate. If the scatterplot looks like a V, this may indicate a non-linear relationship, so a linear regression model may not be appropriate either.

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To figure out the perimeter of a triangle, we add up all of the sides.

172 + 186 + 123 = 481

The perimeter is equal to 481m.

If a fence were to be built around the perimeter of the park, it would need to be a length of 481m.

Answer:

The probability of getting the spinner to land on green and coin to show Tails is 1/20

Step-by-step explanation:

p(E) = p(spinner landing on green) = 2/20

p(F) = p(Coin lands on Tails) = 1/2

p(E and F) = p(E) . p(E/F)

p(E and F) = 2/20 . 1/2

p(E and F) = 1/20

The probability of getting the spinner to land on green and coin to show Tails is 1/20

Answer:

A

Step-by-step explanation:

In a systems of equations we have to set up two equations which relate to each other and in this case we're setting up two linear equations, so let's take a look at the question.

Let's first make an equation from: "A monster pizza, m, has 7 fewer slices than twice the number on a large pizza, l" That means if we subtracted  twice the large pizza from monster pizza, we would get 7 slices. [tex]2l-m=7[/tex] and if we multiply by -1 on both sides: [tex]m-2l=-7[/tex]

Now let's use the second piece of information given: "the difference between the number of slices on a monster pizza and the number of slices on a large pizza is 4 slices" this means if we take away 4 slices from the monster pizza we get the same amount of slices on a large pizza: [tex]m-4=l[/tex] and rearranging we get: [tex]m-l=4[/tex] making A the correct option

Answer:

k=8 is not part of the solution set

Step-by-step explanation:

5(8) < 39

40 < 39

If you plug in 8 for K it makes the inequality incorrect. 40 is not less than 39.

Hence the answer is

( i )  - 8/27   (ii) -4/9

Given question answer is

( i ) (-2/3)³

 = (-2/3) * (-2/3) *(-2/3)

=   (-8/27)

( ii )  (-4/3²)

      =  -4/3*3

      =  (-4/9)

You must substitute a number for each variable and conduct arithmetic operations to evaluate an algebraic statement. Because 6 + 6 = 12, the variable x in the preceding example is equal to 6. We can evaluate the expression after replacing the variables with their values if we know their values.

When x=4, calculate 2x2+3x+8. When x = 4, calculate 2 x 2 + 3 x + 8. When an expression contains a variable with an exponent, we must exercise caution. This phrase, 2x2 2 x 2, indicates 2xx 2 x x, as opposed to the expression (2x)2 (2 x) 2, which implies 2x2x 2 x 2 x.

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The normal vector of the plane containing the lines is the cross product of (-12, 3, 6) and (4, -1, -2), which is (48, -66, 0).

The direction vector of a line is a vector that points in the direction of the line and the position vector of a line is a vector that represents any point on the line.

Let's start with line r1(t) = - (-12t, 3t + 1,6t + 5).

The derivative of r1(t) = - (-12t, 3t + 1,6t + 5) is (-12, 3, 6).

So, the direction vector of line r1(t) is (-12, 3, 6).

We repeat this process for line r2(t) = (4t – 4, -t + 4,5 – 2t).

The derivative of r2(t) = (4t – 4, -t + 4,5 – 2t) with respect to t is (4, -1, -2), so the direction vector of line r2(t) is (4, -1, -2).

If we plug in t = 0 into the line equation, we get the point

=> (4t – 4, -t + 4,5 – 2t) = (-4, 4, 5).

So, the position vector of line r2(t) is (-4, 4, 5).

So, we find the cross product of (-12, 3, 6) and (4, -1, -2). If the cross product is equal to the zero vector, then the lines are parallel.

If not, then the lines are not parallel.

The cross product of (-12, 3, 6) and (4, -1, -2) is (48, -66, 0).

Since the cross product is not equal to the zero vector, the lines are not parallel.

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Answer:

1) It is not specified in the given information whether the market rate of interest is higher or lower than 7.75% when the Craft Foods bonds were issued.

2) The selling price of the bonds is determined by multiplying the face value of the bonds by the price percentage. In this case, the face value of the bonds is $750,000,000 and the price percentage is 100.5%, so the selling price would be:

$750,000,000 x 100.5% = $757,500,000

It's worth noting that the price percentage being 100.5% means that the bonds are being sold at a slight premium (i.e. above face value) and that the yield to maturity is lower than 7.75%.

For given parallelogram which is a quadrilateral,   The coordinates of the fourth vertex of parallelogram is (0,3).

what are quadrilaterals?

A quadrilateral is a polygon with four sides, four vertices, and four angles.

It is formed by joining four non-collinear points. The sum of the interior angles of quadrilaterals is always equal to 360 degrees. The word quadrilateral is derived from the Latin words ‘Quadra’ which means four and ‘Latus’ means ‘sides’. Not all the four sides of a quadrilateral need to be equal in length. Hence, we can have different types of quadrilaterals based on sides and angles.

Five special quadrilaterals are shown below in the image, along with their definitions and pictures, and points for them to get proven.

Now,

Let A(-4,0), B(4,-3), C(-2,-6) and D(x,y)

As for parallelogram diagonals bisect each other.

The midpoint of Diagonal AC= The midpoint of BD

((-4+4)/2,(0-3)/2)=(x-2)/2,(y-6)2

x-2=0     y=-3+6

x=0        y=3

Hence,

              The coordinates of the fourth vertex of parallelogram is (0,3).

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The probability of getting exactly one head and one tail in two tosses of a fair coin is 0.6

We are asked to estimate the probability of getting exactly one head and one tail in two tosses of a fair coin and it is given that the digits 0, 1, 2, 3, 4 are assigned to heads and 5, 6, 7, 8, 9 are assigned to tails.

By Making a pair of two digits the outcomes on basis of random digits are HT, HH, TT, TH, HH, HT, TT, TH, TH, HT.

Hence, the probability of head and tail = Total pairs with one head and one tail/Total number of pairs

                                                                = 6/10

                                                                = 0.6

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The probability in each case is:

The probabilities provided are the probabilities of each value of X. For example,

Similarly,

When finding probabilities for a range of X values, you need to add up the individual probabilities of all the values in the range. For example, if you are looking for

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When revolved over the {x} axis will occupy more volume as compared to when revolved over the {y} axis.

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the volume occupied between the lines -

x = 4, y = x and x - axis.

Refer to the image attached. The reflection over the {x} axis will occupy more volume as compared to the reflection over the {y} axis. The figure generated in both the cases would be a cuboidal prism structure.

Therefore, when revolved over the {x} axis will occupy more volume as compared to when revolved over the {y} axis.

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The length of the ramp is 5516.05 feet.

The sine function in trigonometry is the ratio of the hypotenuse's length to the opposite side's length in a right-angled triangle. To determine a right triangle's unknown angle or sides, utilize the sine function.

Given:

The angle of elevation is 5 degrees,

and the height of the pyramid is 481 feet.

Let x be the length of the ramp.

Then,

Sin(5°) = opposite/ hypotenuse

Sin(5°) = 481 / x

x = 481/ 0.0872

x = 5516.05 feet.

Therefore, the length is 5516.05 feet.

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Answer:

y = 4 + 6x

Step-by-step explanation:

Since the original height of the plant was 4 inches, the y-intercept must be four. The text says that after one month, the plant was 10 inches tall, meaning it grew 6 inches in one month. Therefore, the answer is y = 4 + 6x

Answer:

14

Step-by-step explanation:

26-12