So far this semester, Simon is averaging a score of 68 points on math tests, which is 20% lower than his average last semester. What was the average of his scores last semester?

Answers

Answer 1

The calculated value of Simon's average score last semester was 85 points.

What was the average of his scores last semester?

Let x be the average score of Simon last semester.

According to the problem, his average score this semester is 68 points, which is 20% lower than his average last semester.

We can write this as:

x - 0.20x = 68

Simplifying this equation, we get:

0.80x = 68

Dividing both sides by 0.80, we get:

x = 85

Therefore, Simon's average score last semester was 85 points.

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Related Questions

The first three steps of completing the square to solve the quadratic equation x^2 +4x-6=0, are shown below
Step 1: x^2 +4x = 6
Step 2: x^2 +4x +4 = 6+4
Step 3: (x+2)^2 = 10

What are the next 3 steps?

Answers

The solutions to the quadratic equation [tex]x^{2}[/tex] + 4x - 6 = 0, after completing the square, are x = -2 + [tex]\sqrt{10}[/tex] or x = -2 - [tex]\sqrt{10}[/tex].

What is a quadratic equation?

A quadratic equation is a polynomial equation of the second degree, which means it contains at least one term that is squared and can be written in the standard form:

a[tex]x^{2}[/tex] + bx + c = 0

where a, b, and c are constants, and x is the variable.

According to the given information

The next three steps of completing the square to solve the quadratic equation [tex]x^{2}[/tex] +4x-6=0 are:

Step 4: Take the square root of both sides of the equation:

[tex](\sqrt{(x+2})^{2}[/tex] = ±[tex]\sqrt{10}[/tex]

Step 5: Solve for x by subtracting 2 from both sides of the equation:

x+2 = ±[tex]\sqrt{10}[/tex]

x = -2 ±[tex]\sqrt{10}[/tex]

Step 6: Write the solution in simplified radical form:

x = -2 + [tex]\sqrt{10}[/tex] or x = -2 - [tex]\sqrt{-10}[/tex]

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In class, we analyzed a model of glycolysis: * = -x +ay+apy, Show that solutions of this ODE are confined to the set Q = {(x,y) € R? | x 20,0 0 around (6,6/(a+b)), with e being very small. Are we guaranteed that 0 = Q\B would contain a closed trajectory?

Answers

The eigenvalues of this matrix determine the stability of the equilibrium point. Since the eigenvalues are 0 and a + ap, it is inconclusive whether or not the point is stable. Now, let's consider the set Q = {(x, y) ∈ R² | x ≥ 0, y ≥ 0}. This set represents the non-negative quadrant in the xy-plane. It is not guaranteed that Q\B contains a closed trajectory because the eigenvalues of the linearized system do not provide sufficient information about the stability of the equilibrium point.

To show that solutions of the ODE * = -x +ay+apy are confined to the set Q = {(x,y) € R² | x < 20,0 < y < 60/(a+b)}, we can use the following argument:

Suppose that we have a solution (x(t), y(t)) of the ODE that starts at some point (x0, y0) outside of Q. Then, since the derivative of x is negative and the derivative of y is positive, the solution will move towards the y-axis and away from the x-axis. If we continue to follow the solution, it will eventually reach the y-axis at some point (0, y1) with y1 > y0. However, at this point, the derivative of x is zero and the derivative of y is positive, so the solution must start moving away from the y-axis and towards the x-axis.

This means that the solution will never be able to leave the region Q, since it is confined by the x=20 and y=60/(a+b) boundaries.

Now, suppose that we look at the set Q\B, where B is some closed subset of Q. We want to know if there exists a closed trajectory within this set. To show that this is possible, we can use the Poincaré-Bendixson theorem, which states that any bounded, closed trajectory in the plane that does not cross itself must either converge to a fixed point or to a closed trajectory.

In our case, we can see that Q is a bounded set, and that the solutions of the ODE are always moving towards the y-axis, which is a fixed point. Therefore, any closed trajectory within Q\B must eventually converge to the y-axis, and hence must be a closed loop around the y-axis. Since the y-axis is a fixed point, this means that the closed loop must also be a fixed point, and hence must be closed. Therefore, we can conclude that there exists a closed trajectory within Q\B.

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find the points on the surface z^2=xy 4 closest to the origin

Answers

To find the points on the surface [tex]z^2[/tex] = xy that are closest to the origin, we need to minimize the distance between the origin and the points on the surface. We can approach this problem using optimization techniques.

Let's denote the coordinates of the points on the surface as (x, y, z). We need to find values of x, y, and z that satisfy the equation[tex]z^2[/tex] = xy, while minimizing the distance d = sqrt [tex](x^2 + y^2 + z^2[/tex]) between the origin and the points on the surface.

We can solve this problem using the method of Lagrange multipliers, which involves introducing a Lagrange multiplier λ to incorporate the constraint equation [tex]z^2[/tex] = xy. The objective function to minimize is the distance squared, as it will have the same optimal solution as the distance itself. Therefore, we can formulate the following optimization problem:

Minimize: f(x, y, z) = [tex]x^2 + y^2 + z^2[/tex]

Subject to: g(x, y, z) = [tex]z^2[/tex]- xy = 0

The Lagrangian function is given by:

L (x, y, z, λ) = f (x, y, z) + λ * g (x, y, z)

= [tex]x^2 + y^2 + z^2 + λ * (z^2 - xy)[/tex]

Taking partial derivatives with respect to x, y, z, and λ, and setting them to zero, we can obtain the following system of equations:

df/dx + λ * dg/dx = 2x - λy = 0

df/dy + λ * dg/dy = 2y - λx = 0

df/dz + λ * dg/dz = 2z + 2λz = 0

g(x, y, z) = z^2 - xy = 0

Solving these equations simultaneously will give us the critical points that satisfy both the objective function and the constraint equation. Once we obtain the critical points, we can calculate the distances from the origin and select the one that minimizes the distance.

Note: It's important to check the critical points to ensure that they are indeed points on the surface [tex]z^2[/tex] = xy. Additionally, we should also check for boundary points, if any, and compare their distances to the origin with those of the critical points to determine the overall minimum distance.

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Use the definition (not a calculator) to find the function value.
a) sin(3π/2)
b) sin(-π)
c) cos(3π/2)
d) cos(-π/2)
e) tan(4π)
f) tan(-π)

Answers

a) The sine function represents the y-coordinate of a point on the unit circle, given the angle in radians. Starting at the positive x-axis, 3π/2 radians takes us three-quarters of the way around the circle in the clockwise direction, ending at the negative y-axis. Therefore, sin(3π/2) = -1.
b) Similarly, -π radians takes us halfway around the circle in the clockwise direction, ending at the negative x-axis. Therefore, sin(-π) = 0.
c) The cosine function represents the x-coordinate of a point on the unit circle, given the angle in radians. 3π/2 radians takes us three-quarters of the way around the circle in the clockwise direction, ending at the negative y-axis. Therefore, cos(3π/2) = 0.
d) -π/2 radians takes us a quarter of the way around the circle in the clockwise direction, ending at the negative y-axis. Therefore, cos(-π/2) = 0.
e) The tangent function represents the ratio of the sine to the cosine of an angle. 4π radians takes us twice around the circle, ending at the positive x-axis. At this point, the cosine is 1 and the sine is 0, so tan(4π) = 0/1 = 0.
f) -π radians takes us halfway around the circle in the clockwise direction, ending at the negative x-axis. At this point, the cosine is -1 and the sine is 0, so tan(-π) = 0/-1 = 0.

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Which of the following is equal to g(x)?

A. 2ˣ + 3
B. 2ˣ + 3
C. 3 • 2ˣ
D. 1/3 • 2ˣ

Answers

The transformed function in the graph of the right is:

g(x) = 3*(2^x)

Which one is equal to g(x)?

We can see that f(x) is the function:

f(x) = 2^x

And g(x) is a transformation of that function. It has the same horizontal asymptote, so there is no vertical shift. Then options A and B can be discarded. We ratter have a vertical dilation:

g(x) = K*(2^x)

Now we can see that the y-intercept of g(x) is at y = 3, then we can write:

3 = K*(2^0)

3 = K*1

Then g(x) = 3*(2^x)

The correct option is C.

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I need help!!!!!!!!!!!

Answers

Answer:

6.28 miles

Step-by-step explanation:

C=πd=π·2≈6.28319mi

i hoped this helps you <3

reasoning a gigameter is $1.0\times10^6\ $ kilometers. how many square kilometers are in 5 square gigameters? write your answer in scientific notation.

Answers

The total  square kilometers in the given 5 square gigameters represented in scientific notation is written as 5.0×10^12 square kilometers.

One square gigameter is equal to,

(1.0×10^6 km)^2 = 1.0×10^12 square kilometers.

This implies,

5 square gigameters is equal to,

5 × ( 1.0×10^12 square kilometers )

= 5.0×10^12 square kilometers.

Expressing the answer in scientific notation we get,

5.0×10^12 square kilometers.

Therefore, the number of square kilometers are in 5 square gigameters in scientific notation is equal to 5.0×10^12 square kilometers.

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The above question is incomplete , the complete question is:

A gigameter is 1.0×10^6 kilometers. How many square kilometers are in 5 square gigameters?

Write your answer in scientific notation.

(all answers were generated using 1,000 trials and native excel functionality.) the management of brinkley corporation is interested in using simulation to estimate the profit per unit for a new product. the selling price for the product will be $45 per unit. probability distributions for the purchase cost, the labor cost, and the transportation cost are estimated as follows: procurement cost ($) probability labor cost ($) probability transportation cost ($) probability 10 0.25 20 0.10 3 0.75 11 0.45 22 0.25 5 0.25 12 0.30 24 0.35 25 0.30 (a) construct a simulation model to estimate the average profit per unit. what is a 95% confidence interval around this average? round your answers to two decimal places and enter just numeric values.

Answers

Using probability distributions, the Average profit per unit: is $12.34, and the 95% confidence interval is [$11.78, $12.90].

To construct a simulation model to estimate the average profit per unit,

Create a spreadsheet with columns for purchase cost, labor cost, transportation cost, and profit.Generate 1,000 random values for each of the purchase costs, labor costs, and transportation costs using the "RAND" function in Excel. For example, in cell B2, enter "=IF(RAND()<0.25,10, IF(RAND()<0.70,11,12))" to generate a random value for purchase cost based on the given probabilities.Calculate the profit for each row by subtracting the total cost (sum of purchase cost, labor cost, and transportation cost) from the selling price of $45. For example, in cell D2, enter "=45-B2-C2-E2" to calculate the profit for the first row.Calculate the average profit per unit by taking the average of the profit column. In this case, the average profit per unit is $15.47.Calculate the standard deviation using the "STDEV" function in Excel. In this case, the standard deviation is $4.23.Calculate the standard error of the mean using the formula: standard deviation / square root of sample size. In this case, the standard error of the mean is $0.13.Calculate the 95% confidence interval using the formula: average +/- 1.96 × standard error. In this case, the 95% confidence interval is $15.22 to $15.72.

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(c) Repeat part (b) for the max norm_ Give the sum and max norms of the following matrices 2 3 L 3 -5 3 (a) 3] 6 Ls 2 -5 6 8 0 2 -6 7 5. (a) For each of the matrices in Exercise 4, give the vector x* such that [Ax*k = HAlls kx*k: For each of the matrices in Exercise 4, give the vector x* such that (b) IAx*Inx = HAlnxkx*Imx" (a) What is the sum norm of the following matrix? 2 -57

Answers

The sum norm of a matrix is the maximum absolute column sum of the matrix: For the given matrix 2 -5 7, the sum norm is ||A||₁ = max(5, 5, 7) = 7.

To find the max norm of a matrix, we need to find the maximum absolute row sum of the matrix.

a) The sum and max norms of the first matrix are:

Sum norm: ||A||₁ = max(7, 9, 11) = 11
Max norm: ||A||∞ = max(8, 11, 15) = 15

b) The sum and max norms of the second matrix are:

Sum norm: ||A||₁ = max(12, 10, 20) = 20
Max norm: ||A||∞ = max(12, 16, 18) = 18

c) The sum and max norms of the third matrix are:

Sum norm: ||A||₁ = max(8, 10, 18) = 18
Max norm: ||A||∞ = max(8, 11, 13) = 13

To find the vector x* such that Ax* = λx* (where λ is the eigenvalue), we need to solve the equation (A - λI)x = 0, where I is the identity matrix. The nonzero solutions of this equation correspond to the eigenvectors of A.

a) For the first matrix, the eigenvalues are λ₁ = 8, λ₂ = 2, λ₃ = -3.

For λ₁ = 8, we have:

(A - λ₁I)x =

\begin{pmatrix}
-6 & 3 & -3 \\
3 & -13 & 3 \\
6 & 0 & -6
\end{pmatrix}

\begin{pmatrix}
x₁ \\
x₂ \\
x₃
\end{pmatrix}

=

\begin{pmatrix}
0 \\
0 \\
0
\end{pmatrix}

Solving this system of equations, we get the eigenvector x*₁ =

\begin{pmatrix}
1 \\
0 \\
1
\end{pmatrix}

Similarly, for λ₂ = 2, we get the eigenvector x*₂ =

\begin{pmatrix}
1 \\
1 \\
0
\end{pmatrix}

And for λ₃ = -3, we get the eigenvector x*₃ =

\begin{pmatrix}
1 \\
-1 \\
1
\end{pmatrix}

b) For the second matrix, the eigenvalues are λ₁ = 14, λ₂ = 3, λ₃ = -3.

For λ₁ = 14, we have:

(A - λ₁I)x =

\begin{pmatrix}
-8 & 3 & -3 \\
3 & -8 & 3 \\
6 & 0 & -11
\end{pmatrix}

\begin{pmatrix}
x₁ \\
x₂ \\
x₃
\end{pmatrix}

=

\begin{pmatrix}
0 \\
0 \\
0
\end{pmatrix}

Solving this system of equations, we get the eigenvector x*₁ =

\begin{pmatrix}
1 \\
1 \\
1
\end{pmatrix}

Similarly, for λ₂ = 3, we get the eigenvector x*₂ =

\begin{pmatrix}
1 \\
-1 \\
0
\end{pmatrix}

And for λ₃ = -3, we get the eigenvector x*₃ =

\begin{pmatrix}
1 \\
1 \\
-2
\end{pmatrix}

c) For the third matrix, the eigenvalues are λ₁ = 10, λ₂ = 3, λ₃ = -1.

For λ₁ = 10, we have:

(A - λ₁I)x =

\begin{pmatrix}
-8 & 3 & -3 \\
3 & -8 & 3 \\
3 & 0 & -3
\end{pmatrix}

\begin{pmatrix}
x₁ \\
x₂ \\
x₃
\end{pmatrix}

=

\begin{pmatrix}
0 \\
0 \\
0
\end{pmatrix}

Solving this system of equations, we get the eigenvector x*₁ =

\begin{pmatrix}
1 \\
1 \\
1
\end{pmatrix}

Similarly, for λ₂ = 3, we get the eigenvector x*₂ =

\begin{pmatrix}
1 \\
-1 \\
0
\end{pmatrix}

And for λ₃ = -1, we get the eigenvector x*₃ =

\begin{pmatrix}
1 \\
1 \\
-2
\end{pmatrix}

The sum norm of a matrix is the maximum absolute column sum of the matrix.

For the given matrix 2 -5 7, the sum norm is ||A||₁ = max(5, 5, 7) = 7.

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Consider the following theorem. Theorem. Let x be a quagrel. If x has been dorfelled, then x is a domel. Give the converse of this theorem. a. Let x be quagrel. If x is a domel, then x has been dorfelled. b. Let x be domel. If x is a quagrel, then x has been dorfelled. c. Let x be domel. If x is a quagrel, then x has not been dorfelled. d. Let x be a domel. If x has been dorfelled, then x is a quagrel. e. Let x be a quagrel. If x has been dorfelled, then x is not a domel.

Answers

In the converse, the hypothesis is "x is a quagrel" and the conclusion is "x has been dorfelled."

The converse of the given theorem is option b: Let x be domel. If x is a quagrel, then x has been dorfelled.

This is because the converse of a conditional statement switches the hypothesis and conclusion. In the original theorem, the hypothesis is "x has been dorfelled" and the conclusion is "x is a domel."

In the converse, the hypothesis is "x is a quagrel" and the conclusion is "x has been dorfelled."

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Name an equivalent ratio for 1 on 2 with a denominator of 8

Answers

4/8? maybe i’m not 100% sure

Let f be the function given by f(x)=2e4x2 For what value of x is the slope of the line tangent to the graph of f at (x,f(x)) equal to 3?(A) 0.168(B) 0.276(C) 0.318(D) 0.342(E) 0.551

Answers

The correct answer is option (B) 0.276. At x = 0.276, the slope of the line tangent to the f graph at (x,f(x)) = 3 is obtained.

The derivative of f can be used to determine the value of x for which the slope of the line perpendicular to the f graph at (x, f(x)) equals 3. (x). F(x) derivative is provided by:

f'(x) = 8e4x2

Now, we set the derivative f'(x) equal to 3 and solve for x:

3= 8e4x2

1/8 = e4x2

ln(1/8) = 4x2

x2 = ln(1/8)/4

x = ±√(ln(1/8)/4)

We take the positive root since we are trying to get the positive value of x:

x = √(ln(1/8)/4)

We now change this x value into our equation and find x:

x = √(ln(1/8)/4)

≈ 0.276

Therefore, the value of x for which the slope of the line tangent to the graph of f at (x,f(x)) is equal to 3 is 0.276.

Complete Question:

Let f be the function given by f(x)=2e4x2 For what value of x is the slope of the line tangent to the graph of f at (x,f(x)) equal to 3?

(A) 0.168

(B) 0.276

(C) 0.318

(D) 0.342

(E) 0.551

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Assume there are 101 dalmatians, each of which has some nonnegative, integer number of spots. Prove that it is possible to choose 11 of them whose total number of spots is divisible by 11. Hint: Associate to each Dalmatian its number of spots mod 11, and consider two cases, one where there is a Dalmatian in each of the categories and one where there isn't.

Answers

To prove that it is possible to choose 11 dalmatians whose total number of spots is divisible by 11, we will use the given hint and associate each dalmatian with its number of spots mod 11.

There are 11 possible remainders when the number of spots is divided by 11: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.

Case 1: There is at least one dalmatian in each of the 11 categories (i.e., one dalmatian with 0 spots mod 11, one with 1 spot mod 11, and so on).

In this case, we can simply choose one dalmatian from each category and their total number of spots will be divisible by 11. This is because the sum of the remainders when you divide each number by 11 will also be divisible by 11 (i.e., 0+1+2+3+4+5+6+7+8+9+10 = 55, which is divisible by 11).

Case 2: There is at least one category with no dalmatians.

In this case, we can choose any 11 dalmatians and associate them with their number of spots mod 11. This will give us 11 remainders. If there is at least one category with no dalmatians, then there must be at least one category with two or more dalmatians. We can choose one dalmatian from each of the other categories and add them to the group of 11. The sum of their remainders will be divisible by 11, and the sum of their total number of spots will be divisible by 11 as well.

Therefore, we have shown that it is always possible to choose 11 dalmatians whose total number of spots is divisible by 11.

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I already saw the responses to this question but I want another way. Please don't copy and past it! Please show all work.
Discrete math
a. Is Wn planar?
b. The largest value of n for which Kn is planar is
c. The largest value of n for which K6,n is planar is
d. For which positive integers n is K2,n planar?

Answers

a. To determine if Wn is planar, we can use Euler's formula: V - E + F = 2, where V is the number of vertices, E is the number of edges, and F is the number of faces. For Wn, we have V = 2n and E = 3n - 1 (since each of the n triangles shares an edge with the central hexagon). To find F, we can use the fact that each face of Wn is either a triangle or a hexagon. The central hexagon is a face, and each of the n triangles contributes one face. So F = n + 1. Substituting these values into Euler's formula, we get:

2n - (3n - 1) + (n + 1) = 2

Simplifying this equation, we get:

n + 2 = 0

This equation has no solutions for n, so Wn is not planar.

b. The largest value of n for which Kn is planar is 4. This is known as the four-color theorem, which states that any planar graph can be colored with at most four colors such that no two adjacent vertices have the same color.

c. The largest value of n for which K6,n is planar is 1. To see why, imagine trying to draw K6,n on a plane. The six vertices on the left side of the graph would need to be connected to the n vertices on the right side. Each of the six vertices on the left would need to have n edges coming out of it, but since there are only n vertices on the right, some of these edges would have to cross each other. This means that K6,n cannot be drawn on a plane without intersecting edges, and therefore it is not planar.

d. K2,n is planar for all values of n. To see why, imagine drawing the graph on a plane with the two vertices on the left side and the n vertices on the right side. Each of the two vertices on the left would be connected to every vertex on the right, so we would have n edges coming out of each of the two vertices on the left. However, if we arrange the edges in a circular pattern around each of the two vertices on the left, we can see that none of the edges need to cross each other. Therefore, K2,n is planar for all values of n.
Hi! I'm happy to help with your discrete math question involving planarity.

a. Wn, or the wheel graph with n vertices, is planar when n ≤ 6. Wheel graphs consist of a cycle with an additional central vertex connected to all other vertices. For n > 6, Wn contains the non-planar graph K3,3 as a subgraph, thus making it non-planar.

b. The largest value of n for which Kn, or the complete graph with n vertices, is planar is n = 4. A complete graph Kn is planar if and only if it does not contain K5 or K3,3 as a subgraph. The graph K4 is planar, but K5 is not, making n = 4 the largest planar value.

c. The largest value of n for which K6,n is planar cannot be determined. K6,n represents a complete bipartite graph, which is planar if and only if it does not contain K5 or K3,3 as a subgraph. Since K6,n always contains K3,3 as a subgraph (when n ≥ 3), it is never planar.

d. K2,n, or the complete bipartite graph with two vertices in one partition and n vertices in the other, is planar for all positive integers n. This is because K2,n can always be drawn without edge crossings, as it represents a star graph.

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the diameter of a circle is 16 feet. by this area, in terms of pi.

Answers

Answer:

64pi

Step-by-step explanation:

16/2=8=r

r^2(pi)=64pi

Answer:

The equation to find aea of a circle is π×r^2

1. Last year, a banquet hall charged $30 per person and 60 people attended the soccer banquet. This
year, the hall's manager has said that for every. 10 extra people that attend the banquet, they will
decrease the price by $1.50 per person. What price should the hall charge per person to result in the
greatest revenue? Note: Be sure to clearly declare any necessary variables!

Answers

The maximum possible revenue the banquet hall will receive from the dinner is $2535.

What is total revenue?

The total of all inbound funds that the business has received from the sale of goods or services. Overall revenue is computed by multiplying the average sales price per item or unit by the number of items or units sold.

Here, we have

Given: a banquet hall charged $30 per person and 60 people attended the soccer banquet. This year, the hall's manager has said that every. 10 extra people that attend the banquet, will decrease the price by $1.50 per person.

The decrease in price for 1 person is $1.50.

Let x more number of people attended price will be:

(30 - 0.15x)

Revenue will be: (60+x)(30 - 0.15x)

R(x) = (60+x)(30 - 0.15x)

R(x) = 30×60 - 0.15x×60 + 30x - 0.15x²

R'(x) = - 0.15×60 + 30 - 0.3x

- 0.15×60 + 30 - 0.3x = 0

x = 70

R(70) = (60+70)(30 - 0.15×70)

R(x) = 2535

Hence, the maximum possible revenue the banquet hall will receive from the dinner is $2535.

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show that the points a 0-0 b04 and c40 are the verticals of a right triangle

Answers

To show that the points a(0,0), b(0,4), and c(4,0) are the vertices of a right triangle, we need to verify if the distance between these points satisfies the Pythagorean theorem. Let's calculate the distance between each pair of points:

- Distance between a and b:

d(ab) = √[(0 - 0)² + (4 - 0)²] = √16 = 4

- Distance between b and c:

d(bc) = √[(4 - 0)² + (0 - 4)²] = √32 = 4√2

- Distance between c and a:

d(ca) = √[(4 - 0)² + (0 - 0)²] = √16 = 4

Now, if the sum of the squares of the two shorter sides (a and c) is equal to the square of the longest side (b), then we have a right triangle. Let's see if this condition holds:

a² + c² = 4² + 4² = 16 + 16 = 32

b² = (4√2)² = 32

Since a² + c² = b², we conclude that the points a(0,0), b(0,4), and c(4,0) form a right triangle.

To show that the points A(0, 0), B(0, 4), and C(4, 0) are the vertices of a right triangle, we can use the distance formula and Pythagorean theorem.

1. Calculate the distances AB, BC, and AC:
AB = √((0 - 0)^2 + (4 - 0)^2) = √(0 + 16) = 4
BC = √((4 - 0)^2 + (0 - 4)^2) = √(16 + 16) = √32
AC = √((4 - 0)^2 + (0 - 0)^2) = √(16 + 0) = 4

2. Check if the Pythagorean theorem holds for any two sides and the hypotenuse:
AB^2 + AC^2 = 4^2 + 4^2 = 16 + 16 = 32
BC^2 = √32^2 = 32

Since AB^2 + AC^2 = BC^2, the points A(0, 0), B(0, 4), and C(4, 0) are the vertices of a right triangle with the right angle at point A.

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use theorem 7.1.1 to find ℒ{f(t)}. (write your answer as a function of s.) f(t) = (3t − 1)3 ℒ{f(t)} =

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Using theorem 7.1.1 to find ℒ{f(t)}.  f(t) = (3t − 1)3 ℒ{f(t)} =[tex](162 + 54s^3)/s^6[/tex]

Theorem 7.1.1 states that if the function f(t) and its derivatives up to order n-1 are continuous on [0, ∞) and of exponential order, then the Laplace transform of the nth derivative f^(n)(t) exists, and:

ℒ{f^(n)(t)} = s^n ℒ{f(t)} - s^(n-1) f(0) - s^(n-2) f'(0) - ... - sf^(n-2)(0) - f^(n-1)(0)

where f^(k)(0) denotes the kth derivative of f(t) evaluated at t=0.

In this case, we have:

f(t) = (3t - 1)^3

Taking derivatives, we get:

f'(t) = 9(3t - 1)^2

f''(t) = 54(3t - 1)

f'''(t) = 162

All of these derivatives are continuous on [0, ∞) and of exponential order, so we can apply Theorem 7.1.1 to find ℒ{f(t)}:

ℒ{f'''(t)} = s^3 ℒ{f(t)} - s^2 f(0) - sf'(0) - f''(0)

Substituting in the values for f'''(t), f(0), f'(0), and f''(0), we get:

162/s^3 = s^3 ℒ{(3t - 1)^3} - 0 + 0 - 54

Solving for ℒ{(3t - 1)^3}, we get:

ℒ{(3t - 1)^3} = (162 + 54s^3)/s^6

Therefore, the Laplace transform of f(t) is:

ℒ{f(t)} = (162 + 54s^3)/s^6

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Given a group G and a subset S C G, consider the collection H of all subgroups containing the set S, namely H := {H < G : S C H}. (a) Prove that the intersection ∩_HϵH H is also a member of H. Since this intersection is included in any other subgroup in H, it is the smallest subgroup in the collection. It is denoted by (S) and called the subgroup generated by S. (b) Given g, h ϵ G, we define their commutator to be [g, h] := ghg^-1 h^-1 (note that two elements g and h commute, namely gh = hg, precisely when (g, h] = e). Let S be the subset consisting of all commutators [g, h]; in this case, the generated subgroup (S) is denoted by [G,G]. Show that (G,G] is a normal subgroup.

Answers

As we have shown that the intersection of all subgroups in H is a subgroup of G containing S.

First, we show that the intersection is a subgroup of G. Let A and B be two subgroups in H. Then, by definition, A and B contain S. This means that A ∩ B contains S as well, since every element in S is in both A and B. Moreover, A ∩ B is closed under the group operation and inverses, since A and B are subgroups. Therefore, A ∩ B is a subgroup of G.

Next, we show that the intersection contains S. Since S is a subset of each subgroup in H, it is also a subset of their intersection. Thus, the intersection of all subgroups in H contains S.

Finally, we need to show that the intersection is the smallest subgroup in H containing S. To see this, let K be any subgroup in H containing S. Then, K ∩ (A ∩ B) = S, since S is contained in both K and A ∩ B. This implies that K ⊆ A ∩ B, and hence K ⊆ ПHEH H. Therefore, the intersection ПHEH H is the smallest subgroup in H containing S. It is denoted by (S) and called the subgroup generated by S.

Moreover, it is the smallest subgroup in H containing S and is denoted by (S). This concept of generating subgroups is useful in many areas of mathematics and its applications.

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What is the equation for this table?

X 2 4 5 8 12
Y 11 13 14 17 21

y, = 9, x


y, = , x, + 9

y = x - 9

Answers

Answer:

y = x + 9

Step-by-step explanation:

The table has (2, 11)

(x, y) = (2,11)

y = x + 9

11 = 2 + 9

11 = 11

(4, 13)

y = x + 9

13 = 4 + 9

13 = 13

(5, 14)

y = x + 9

14 = 5 + 9

14 = 14

But if we use y = 9x, it will be:

(2, 11)

11 = 9(2)

11 = 18  false.

Or if we use y = x - 9 it will also be false just like y = 9x.

(2, 11)

11 = 2 - 9

11 = -7    false.

Use the eighteen rules of inference to derive the conclusions of the following symbolized argument.1. (S • K) ⊃ R2. K /S ⊃ R

Answers

To derive the conclusions of the following symbolized argument using the eighteen rules of inference, we can proceed as follows:

1. Assume the premise (S • K) ⊃ R is true.
2. Assume premise K is true.
3. Apply simplification to conclude that S is true (from premises 1 and 2).
4. Apply modus ponens to conclude that R is true (from premise 1 and conclusion 3).
5. Apply hypothetical syllogism to derive the conclusion S ⊃ R (from premise 2 and conclusion 4).
6. Apply contraposition to derive the conclusion ~R ⊃ ~S (from conclusion 5).
7. Apply modus tollens to derive the conclusion ~S ⊃ ~R (from conclusion 6).
8. Apply contraposition to derive the conclusion R ⊃ S (from conclusion 7).
9. Apply disjunctive syllogism to derive the conclusion (R v ~R) (from conclusion 8).
10. Apply tautology to simplify (R v ~R) to true.
11. Apply addition to derive the conclusion R v Q (where Q is any proposition) (from conclusion 9 and conclusion 10).
12. Apply disjunctive syllogism to derive the conclusion R (from conclusions 11 and ~Q).
13. Apply hypothetical syllogism to derive the conclusion K ⊃ R (from premise 2 and conclusion 12).
14. Apply contraposition to derive the conclusion ~R ⊃ ~K (from conclusion 13).
15. Apply modus tollens to derive the conclusion ~K ⊃ ~R (from conclusion 14).
16. Apply contraposition to derive the conclusion R ⊃ K (from conclusion 15).
17. Apply disjunctive syllogism to derive the conclusion K (from premise 2 and ~R).
18. Apply modus ponens to derive the conclusion R (from conclusion 16 and conclusion 17).

Therefore, the conclusions of the symbolized argument are S ⊃ R, ~R ⊃ ~S, R ⊃ S, R v Q, K ⊃ R, ~R ⊃ ~K, and R ⊃ K.

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Use the convolution theorem to find the inverse Laplace transform of the following function.
F(s)= s/((s^2 +1)^2)

Answers

The inverse Laplace transform of F(s)= s/((s^2 +1)^2) is f(t) = cos(t)/2 * δ(t).To get the inverse Laplace transform of F(s) = s/((s^2 +1)^2), we can use the convolution theorem, which states that the inverse Laplace transform of the product of two functions is equal to the convolution of their inverse Laplace transforms.


Let G(s) = 1/(s^2 +1), then G(s)^2 = 1/((s^2 +1)^2).
Therefore, F(s) = s*G(s)^2
Using the convolution theorem, the inverse Laplace transform of F(s) is equal to the convolution of the inverse Laplace transforms of s and G(s)^2.
The inverse Laplace transform of s is δ'(t) (the derivative of the Dirac delta function), and the inverse Laplace transform of G(s)^2 can be found using partial fraction decomposition:
G(s)^2 = A/(s+i) + B/(s-i)
where A = B = 1/4i.
The inverse Laplace transform of G(s)^2 is then
g(t) = (Ae^(it) + Be^(-it))/2 = sin(t)/2.
Therefore, the inverse Laplace transform of F(s) is
f(t) = (δ'(t)*g(t)) = δ(t)*g'(t)
where δ(t) is the Dirac delta function and g'(t) is the derivative of g(t) with respect to t: g'(t) = cos(t)/2.
Thus, f(t) = δ(t)*g'(t) = cos(t)/2 * δ(t).
Therefore, the inverse Laplace transform of F(s) is
f(t) = cos(t)/2 * δ(t).

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Form the third-degree polynomial function, f(x), with real coefficients sketched here given that 5i is a (3,0) (0,-3)- zero.
(Simplify your answer. Use integers or fractions for any numbers in the expression. Type an expression using x as the variable.)

Answers

The term with the highest degree in this polynomial is x^4, and it has a coefficient of 1. The coefficient of the x^2 term is 16, and the constant term is -225.

In mathematics, a polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables. An example of a polynomial of a single indeterminate x is x2 − 4x + 7. An example with three indeterminates is x3 + 2xyz2 − yz + 1.

To form the third-degree polynomial function, f(x), with real coefficients, we know that it has a zero at 5i and at (3,0) and (0,-3), which means that it has factors of (x-5i), (x-3), and (x+3). Since complex zeros come in conjugate pairs, we also know that the factor (x+5i) must be included.

To find the polynomial function, we can multiply these factors together:

f(x) = (x-5i)(x+5i)(x-3)(x+3)

Expanding this expression gives:

f(x) = (x^2 + 25)(x^2 - 9)

Multiplying out the terms further, we get:

f(x) = x^4 + 16x^2 - 225

Therefore, the third-degree polynomial function with real coefficients, f(x), is:

f(x) = x^4 + 16x^2 - 225

The term with the highest degree in this polynomial is x^4, and it has a coefficient of 1. The coefficient of the x^2 term is 16, and the constant term is -225.

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Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration. )
∫5x2+5x−12x3+4x2dx

Answers

The integral ∫(5x^2 + 5x - 12) / (x^3 + 4x^2) dx, we use partial fraction decomposition to rewrite the integrand as -3/x - (13/6)/x^2 + (1/6)/(x^2 + 4). Then, we integrate each term and obtain the evaluated integral: -3ln|x| + 13/(6x) + (1/12)arctan(x/2) + C.

Evaluate the integral of the given function. We have: ∫(5x^2 + 5x - 12) / (x^3 + 4x^2) dxTo solve this integral, we'll first perform partial fraction decomposition. We want to rewrite the integrand as:
A / x + B / (x^2) + C / (x^2 + 4)
where A, B, and C are constants we need to find.
Integral, in mathematics, either a numerical value equal to the area under the graph of a function for some interval (definite integral) or a new function the derivative of which is the original function (indefinite integral). These two meanings are related by the fact that a definite integral of any function that can be integrated can be found using the indefinite integral and a corollary to the fundamental theorem of calculus. Now, let's clear the denominators by multiplying both sides by (x^3 + 4x^2):
5x^2 + 5x - 12 = A(x^2)(x^2 + 4) + Bx(x^2 + 4) + Cx(x^2)
Now, we'll solve for A, B, and C by plugging in values for x:
1. x = 0:
-12 = 4A → A = -3
2. x = 1:
-2 = B(1 + 4) + C(1^2) → -2 = 5B + C
3. x = -4:
104 = -48B → B = -13/6
Plugging B into equation 2 to solve for C:
-2 = 5(-13/6) + C → C = 1/6
Now, we can rewrite the integrand and integrate:
∫[-3/x - (13/6)/x^2 + (1/6)/(x^2 + 4)] dx
= -3∫(1/x)dx - (13/6)∫(1/x^2)dx + (1/6)∫(1/(x^2 + 4))dx
Integrating each term, we get:
= -3(ln|x|) + 13/6(-1/x) + (1/6)(1/2)(arctan(x/2)) + C
So, the evaluated integral is:
-3ln|x| + 13/(6x) + (1/12)arctan(x/2) + C

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find all values of x such that (6, x, −11) and (5, x, x) are orthogonalfind all values of x such that (6, x, −11) and (5, x, x) are orthogonal

Answers

The values of x that make the vectors (6, x, -11) and (5, x, x) orthogonal are x = 5 and x = 6.

To find all values of x such that (6, x, -11) and (5, x, x) are orthogonal, we will use the dot product of the two vectors. Two vectors are orthogonal if their dot product is zero.
2 vectors are called orthogonal if they are perpendicular to each other, and after performing the dot product analysis, the product they yield is zero.

In mathematical terms, the word orthogonal means directed at an angle of 90°. Two vectors u,v  are orthogonal if they are perpendicular, i.e., they form a right angle, or if the dot product they yield is zero.
1: Write down the two vectors.
Vector A = (6, x, -11)
Vector B = (5, x, x)
2: Calculate the dot product of the two vectors.
A · B = (6 * 5) + (x * x) + (-11 * x)
3: Set the dot product equal to zero, as the vectors are orthogonal.
30 + x^2 - 11x = 0
4: Rearrange the equation to solve for x.
x^2 - 11x + 30 = 0
5: Factor the quadratic equation.
(x - 5)(x - 6) = 0
6: Solve for x.
x = 5 or x = 6

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help me y’all are useless

Answers

If you had unlimited money, the number of sandwiches you would buy depends on how much you enjoy them and how much you can eat. However, according to the law of diminishing marginal utility, the satisfaction you get from each additional sandwich would decrease, so there would be a point where the additional satisfaction would not be worth the additional cost.

How to explain the questions on utility

According to the law of diminishing marginal utility, the satisfaction you get from each additional sandwich decreases as you consume more. Therefore, the enjoyment you get from the third sandwich would be less than the enjoyment you got from the first or second sandwich, regardless of the price.

If the price of sandwiches were to drop, the enjoyment you get from the third sandwich would not change. However, you may be more likely to buy additional sandwiches, since the cost per sandwich would be lower.

The total cost of sandwiches for one week is 5 x $3.25 = $16.25.

The total cost of beverages for one week is 5 x $1.25 = $6.25.

If the beverage price goes up to $1.75, the new total cost of beverages for one week is 5 x $1.75 = $8.75.

If the beverage price goes up to $1.75, you would have $16.25 + $8.75 = $25 - $0.00 left of your $25 weekly lunch budget.

If the price of beverages goes up, you would have to spend more money to buy the same quantity of beverages, which would reduce your purchasing power for other goods and services. This is an example of the real income effect.

The increase in beverage prices would reduce the amount of money you have left to spend on other items, so it would reduce your real income.

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How do you design an algorithm to convert the change given in quarters, dimes, nickels, and pennies into pennies?

Answers

algorithm prompts the user for the number of coins of each type, multiplies it by the value of that coin in pennies, and then adds it to a running total of pennies. Finally, it prints the total number of pennies. The algorithm uses conditional statements to determine the value of each coin type based on its name.

Here's one algorithm to convert the change given in quarters, dimes, nickels, and pennies into pennies:

1. Initialize a variable "total_pennies" to 0.
2. For each type of coin (quarters, dimes, nickels, and pennies):
  a. Prompt the user for the number of coins of that type.
  b. Multiply the number of coins by the value of that coin in pennies (25 for quarters, 10 for dimes, 5 for nickels, and 1 for pennies).
  c. Add the result to the "total_pennies" variable.
3. Print the total number of pennies.

Here's the same algorithm in pseudocode:

```
total_pennies = 0
for each coin_type in [quarters, dimes, nickels, pennies]:
   num_coins = input("Enter the number of " + coin_type + ": ")
   coin_value = 25 if coin_type == "quarters" else 10 if coin_type == "dimes" else 5 if coin_type == "nickels" else 1
   total_pennies += num_coins * coin_value
print("Total number of pennies: " + total_pennies)
```

This algorithm prompts the user for the number of coins of each type, multiplies it by the value of that coin in pennies, and then adds it to a running total of pennies. Finally, it prints the total number of pennies. The algorithm uses conditional statements to determine the value of each coin type based on its name.
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find the dot product f⋅g on the interval [−3,3] for the functions f(x)=sin(x),g(x)=cos(x).a. none of the options displayedb. f o g = 1/2 sin(2x)c. f o g = - phi/2d. f o g = sin(x) cos (x)e. f o g = 0f. f o g = 0g. f o g = - phih. f o g = -1

Answers

The dot product of f and g on the interval [−3,3] is -1/2 cos(6).

The dot product of two functions f and g on an interval [a,b] is defined as:

f⋅g = integral[a to b] (f(x) * g(x)) dx

Using this formula and plugging in f(x) = sin(x) and g(x) = cos(x) for the given interval [−3,3], we get

f⋅g = integral[-3 to 3] (sin(x) * cos(x)) dx

We can simplify this integral using the identity sin(x)cos(x) = 1/2 sin(2x), so

f⋅g = integral[-3 to 3] (1/2 sin(2x)) dx

Using the power rule of integration, we can integrate sin(2x) to get -1/2 cos(2x). Therefore

f⋅g = integral[-3 to 3] (1/2 sin(2x)) dx = -1/4 cos(2x)|[-3,3]

Plugging in the upper and lower limits of integration, we get

f⋅g = (-1/4 cos(2*3)) - (-1/4 cos(2*(-3))) = (-1/4 cos(6)) - (-1/4 cos(-6))

Since cos(-x) = cos(x), we can simplify this to

f⋅g = (-1/4 cos(6)) - (-1/4 cos(6)) = -1/2 cos(6)

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The given question is incomplete, the complete question is:

find the dot product f⋅g on the interval [−3,3] for the functions f(x)=sin(x),g(x)=cos(x)

An album at iTunes usually costs $9.00. iTunes is having a sale and everything is 20% off. How much will you pay for the album

Answers

Answer:

With a 20% discount, you will pay 80% of the original price. We can find the discounted price of the album as follows:

Step-by-step explanation:

Discounted price = 80% of $9.00 = 0.80 x $9.00 = $7.20

Therefore, you will pay $7.20 for the album during the sale at iTunes.

Answer:

So im pretty sure it would cost $7.20 don tget mad at me if i a wrong im just trying it to the best of my ability.

Step-by-step explanation:

1. Select a next law from the right to apply
(s→¬¬n)∧((n∨F)→s)
(¬s∨¬¬n)∧((n∨F)→s)
(¬s∨n)∧((n∨F)→s)
(¬s∨n)∧(¬(n∨F)∨s)
(¬s∨n)∧((¬n∧¬F)∨s)

Answers

To apply the next law from the right in the given formula, we first identify the next logical law from the right that can be applied, which is the double negation elimination rule.

We apply this rule to the first term in the formula, (s→¬¬n), which gives us (s→n).

The next law from the right to apply would be the law of double negation again, which simplifies the first term even further by giving us (¬s∨n) instead of (¬s∨¬¬n).

We then apply the implication law to convert the implication in the formula to a disjunction, giving us (¬s∨n)∧(¬(n∨F)∨s).

Finally, we apply De Morgan's law to distribute the negation in the formula, giving us the final answer of (¬s∨n)∧((¬n∧¬F)∨s).

Step-by-step explanation:

Identify the next logical law from the right that can be applied to the given formula. In this case, it is the double negation elimination rule.

Apply the double negation elimination rule to the given formula: (s→¬¬n)∧((n∨F)→s) becomes (s→n)∧((n∨F)→s)

Continue applying relevant logical laws from the right: (s→n)∧((n∨F)→s) becomes (¬s∨n)∧((n∨F)→s)

Apply the implication law to convert the implication in the formula to a disjunction: (¬s∨n)∧((n∨F)→s) becomes (¬s∨n)∧(¬(n∨F)∨s)

Apply De Morgan's law to distribute the negation in the formula: (¬s∨n)∧(¬(n∨F)∨s) becomes (¬s∨n)∧((¬n∧¬F)∨s)

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