-6(-4/7)=
I need for a math assignment please help

Answer:

Step-by-step explanation:

If you download Socratic it give u all the answers for free

using P.E.M.D.A.S. add 3 + 4 + 9:6 then subtract what you get ---> X - 8.72

Answer:

a) More time

b) 4 days

c) 1 day

d) 5 days

Step-by-step explanation:

The number of  days(d) taken for N ants to build a nest is inversely proportional to the number of ants. More ants less time, less ants more time

We can state this using the equation N/1000 = 2/d So the number of days for N ants to build the nest is d = 2000/N

a) 500 ants take more time to build the nest

b) Number of days taken for 500 ants  is double that for 1000 ants so 4 days

c) For 2000 ants, the completion time is halved so it takes 1 day

d) For 400 ants use the equation d = 2000/N = 2000/400 = 5 days

The graph that matches the polynomial function that has x-Intercepts at -2, ;, and 2 and a relative maximum at x = -1 is: graph A.

We are given that the polynomial function has the following characteristics:

Relative maximum at x = -1, this implies that the peak point of the graph has an x-value that is equal to -1. In order words, the "mountain" is at x = -1.

Graph A has a "mountain" that is at x = -1.

We are given the x-intercepts of the polynomial function as:

-2, 1/2, and 2. This means that the graph intercepts the x-axis at -2, 1/2, and 2.

Graph A in the image attached has x-intercepts of -2, 1/2, and 2.

Therefore, we can conclude that the graph that matches the polynomial function that has x-Intercepts at -2, ;, and 2 and a relative maximum at x = -1 is: graph A.

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Answer:

w≈7.6in

Step-by-step explanation:

L= 7.25

D= 10.5

Answer:-

The width of this rectangle is = 7.59

Given:-

In this question, it is given that -

The diagonal of this rectangle is = 10.5

the length of this rectangle is = 7.25

To find:-

We have to find the width of this rectangle.

Solution:-

We can easily solve this problem using the Pythagorean theorem.

In this problem, it is given that the length of this rectangle is = 7.25 and the diagonal is =10.5

so by the Pythagorean theorem, we can get-

(length)² + (width)² = (diagonal)²

or, (7.25)² + (width)² = (10.5)²

or, (width)² = (10.5)² - (7.25)²

= 17.75 × 3.25

= 57.6875

or, width = 7.59

So, the width of the rectangle is 7.59.

Answer:

Step-by-step explanation:

The next step in the construction is Aaron should Use the compass to find the perpendicular bisector for side.

What is the bisector about?

A bisector is known to be a kind of straight line that cut or divide an angle or a line segment.

Note that The next step in the construction is Aaron should Use the compass to find the perpendicular bisector for side as it is the right step to take.

The correct answer to this question is letter b.There are only three steps in constructing a circle circumscribed by a triangle. He is done with the first step.  Use the compass to find the perpendicular bisector for side DF. I hope I have helped you.

Answer:

It's quite easy

Step-by-step explanation:

people less than 30 years = frequency of people 0 to 15 + 15 to 30 = 8+15 =23

Therefore there are 23 people less than 30 years old.

pls mark me as brainliest pls.

Answer:

24.6

Step-by-step explanation:

4(4)+8.6

16+8.6=24.6

Answer:

4² + 8.6 = 24.6

Step-by-step explanation:

Just add.

16 + 8.6 = 24.6

Brainliest Please!!!?!!!!!

- ElizabethKate

Answer:

Step-by-step explanation:

x=5

Adam will need 512 cubic feet of packing peanuts to fill his brother's bedroom.

What is cube?

A cube is a three-dimensional geometric shape that has six equal square faces, 12 equal edges, and eight vertices (corners). All the angles between the faces and edges of a cube are right angles (90 degrees), and all the edges are of equal length. A cube is a special type of rectangular prism where all the sides are equal in length, making it a regular polyhedron.

The volume of a cube is calculated by raising the length of one of its sides to the third power. In this case, the side length is 8ft.

So, the volume of the cube is:

8³ = 512 cubic feet

Therefore, Adam will need 512 cubic feet of packing peanuts to fill his brother's bedroom.

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The number of women in the workforce will not equal the number of men during the time period of 2014-2022.

To determine whether the number of women in the workforce will equal the number of men during the period of 2014-2022, we need to solve the system of equations:

-7x + 16y = 1070

-5x + 10y = 759

where x=14 corresponds to the year 2014.

Substituting x=14 into the equations, we get:

-7(14) + 16y = 1070

-5(14) + 10y = 759

Simplifying and solving for y, we get:

y = 77

y = 153

So according to these models, the estimated number of women and men in the workforce in 2022 are 77 million and 153 million, respectively.

Therefore, the number of women in the workforce will not equal the number of men during the time period of 2014-2022.

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The spectral radius of the Jacobi iteration matrix is greater than 1, indicating that the Jacobi method diverges for the given system. On the other hand, the spectral radius of the Gauss-Seidel iteration matrix is less than 1, indicating that the Gauss-Seidel method converges for the system.

To analyze the convergence or divergence of iterative methods like Jacobi and Gauss-Seidel, we examine the spectral radius of their respective iteration matrices. For the given system, we construct the iteration matrices for both methods.

The Jacobi iteration matrix is obtained by isolating the diagonal elements of the coefficient matrix and taking their reciprocals. In this case, the Jacobi iteration matrix is:

[0 1/2 -1]

[2 0 -1]

[-1 -1/2 0]

To find the spectral radius of this matrix, we calculate the maximum absolute eigenvalue. Upon calculation, it is found that the spectral radius of the Jacobi iteration matrix is approximately 1.866, which is greater than 1. This indicates that the Jacobi method diverges for the given system.

On the other hand, the Gauss-Seidel iteration matrix is constructed by taking into account the lower triangular part of the coefficient matrix, including the main diagonal. In this case, the Gauss-Seidel iteration matrix is:

[0 1/2 -1]

[-12 0 2]

[1 1/2 0]

Calculating the spectral radius of this matrix gives a value of approximately 0.686, which is less than 1. This implies that the Gauss-Seidel method converges for the given system.

In conclusion, the spectral radius analysis confirms that the Jacobi method diverges while the Gauss-Seidel method converges for the provided system.

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Answer: 7x - 6

Step-by-step explanation:

The hypotheses for the test are H₀: σ₁² = σ₂² and H₁: σ₁² ≠ σ₂². This is a two-tailed test to assess if there is a difference in the standard deviations of sound levels between the areas designated as "casualty doors" and operating theaters. The claim being investigated is whether or not there is a difference in the standard deviations.

The hypotheses for the test are:

H₀: σ₁² = σ₂² (There is no difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)

H₁: σ₁² ≠ σ₂² (There is a difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)

This hypothesis test is a two-tailed test because the alternative hypothesis is not specifying a direction of difference.

To substantiate the claim that there is a difference in the standard deviations, we will conduct a two-sample F-test at a significance level of 0.10, comparing the variances of the two groups.

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The given equation is:\(3y" + 18y' + 102y = f(t)\)where f(t) is the applied force.

Let's solve the given differential equation: Solve for\($y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t]$b) For y(0) = 0,$y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t]$For y(0) = 10,Let $y'(0) = v_0$We know that,$y'(t) = -3y(t) - 6y'(t) - 34y''(t) + \frac{1}{3}f(t)$By initial conditions,$y'(0) = -3y(0) - 6y'(0)$i.e.,$v_0 = -18$$\) homogenous part: We know that:\($m^2 + 6m + 34 = 0$\)is the characteristic equation of the given differential equation.

The roots of the characteristic equation are $m = -3 ± i \sqrt{11}$

Therefore the homogenous solution is\(:$y_h(t) = e^{-3t} (c_1 \cos \sqrt{11}t + c_2 \sin \sqrt{11}t)$\)

\(Solve for the particular part: Now, let's solve for the particular part, for \($t≥ 0$ and $f(t) = 10$.Therefore, $y_p(t) = A$.So, we can write the equation as:$$3A + 18A + 102A = 10$$$$\Rightarrow 123A = 10$$$$\Rightarrow A = \frac{10}{123}$$\)\pi\)

Therefore the particular solution is:$y_p(t) = \frac{10}{123}$Complete solution:Therefore the complete solution \(is\(:$y(t) = y_h(t) + y_p(t)$$$\\)Rightarrow\(y(t) = e^{-3t} (c_1 \cos \sqrt{11}t + c_2 \sin \sqrt{11}t) + \frac{10}{123}$$For y(0) = y'(0) = 0, c1 = $\frac{10}{123}$ and c2 = 0.a)\) Now the solution becomes,$y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t]$b) For y(0) = 0,$y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t]$For y(0) = 10,Let $y'(0) = v_0$\)We know that,$y'(t) = -3y(t) - 6y'(t) - 34y''(t) + \frac{1}{3}f(t)$By initial conditions,$y'(0) = -3y(0) - 6y'(0)$i.e.,$v_0 = -18$$\Rightarrow y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t] - \frac{6}{\sqrt{11}} e^{-3t} \sin \sqrt{11}t + \frac{18}{\sqrt{11}} e^{-3t} \cos \sqrt{11}t$

\(know that,$y'(t) = -3y(t) - 6y'(t) - 34y''(t) + \frac{1}{3}f(t)$By initial conditions,$y'(0) = -3y(0) - 6y'(0)$i.e.,$v_0 = -18$$\Rightarrow y(t) = \frac{10}{123} [1 - e^{-3t} \cos \sqrt{11}t] - \frac{6}{\sqrt{11}} e^{-3t} \sin \sqrt{11}t + \frac{18}{\sqrt{11}} e^{-3t} \cos \sqrt{11}t$\)

The plot of y(t) for all cases are as follows: (a) The plot of y(t) for y(0) = y'(0) = 0 is as follows: (b) The plot of y(t) for y(0) = 0 and y(0) = 10 is as follows: The nonzero initial velocity causes a phase shift in the graphs, which means that the graph has moved horizontally. Therefore, there is a change in the starting point of the curve.

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In the given Markov chain, State 1 is absorbing, State 4 is periodic, State 1 is recurrent, and States 3, 4, and 5 are recurrent.

A Markov chain is a stochastic model that represents a sequence of states where the probability of transitioning from one state to another depends only on the current state. Let's analyze the given Markov chain to determine the properties of each state.

State 1: This state has a probability of 1 in the first row, indicating that it is an absorbing state. An absorbing state is one from which there is no possibility of leaving once it is reached. Therefore, statement a) is correct, and State 1 is absorbing.

State 2: There are no transitions from State 2 to any other state, which means it is an absorbing state as well. However, since it is not explicitly mentioned in the question, we cannot determine its status based on the given information.

State 3: This state has non-zero probabilities to transition to other states, indicating that it is not absorbing. Furthermore, it has a loop back to itself with a probability of 1/6, making it recurrent. Hence, statements c) and e) are incorrect, while statement f) is correct. State 3 is recurrent.

State 4: State 4 has a transition probability of 1/3 to State 3, which means there is a possibility of leaving this state. However, there are no outgoing transitions from State 4, making it an absorbing state. Moreover, since there is a loop back to itself with a probability of 2/3, it is also recurrent. Therefore, statement b) is correct, and State 4 is periodic and recurrent.

State 5: Similar to State 4, State 5 has a transition probability of 2/3 to State 3 and no outgoing transitions. Hence, State 5 is also an absorbing and recurrent state. Consequently, statement e) is correct.

To summarize, State 1 is absorbing and recurrent, State 4 is periodic and recurrent, and States 3 and 5 are recurrent.

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Answer:

About 4%

because 5 of 5.2 is about 96% so 100% - 96% = 4%

Answer:

4%

Step-by-step explanation:

vA = actual value

vE = expected value

percent error = ((vA - vE) / vE) x 100

((5.2 - 5) / 5) x 100 = 4

4%

Answer:

A.

Step-by-step explanation:

D: there is no square root

for both C and B there is no decimal.

A should end up being y=-8x+5 which is in y=mx+b form

Answer:

The twelfth term :)

hope this helps

Answer:

the twelfth term answer in edg 2021

Step-by-step explanation:

n the sequence generated by the formula an = n – 4, which term has a value of 8?

1) All interior angles of a square are right angles, so angle WER measures 90°

2) All squares are parallelograms, and diagonals of a parallelogram bisect each other, meaning PA=AE=8 cm. Thus, PE=16 cm

3) All squares are rectangles, and diagonals of a rectangle are congruent, meaning WR=16 cm. Then, using the fact that the diagonals bisect each other, we get that WA=8 cm

4) If we consider right triangle WPR, we know it is isoceles because all sides of a square are congruent. So, the length of WP is:

\( \frac{16}{ \sqrt{2} } = 8 \sqrt{2} \)

The solution of the system of equation is (-7, -2).

The system of the equations;

\(\rm y^2 + x^2 = 53 \\\\y -x = 5\)

From equation 1

\(\rm y -x=5\\\\y = 5+x\)

Substitute the value of y in equation 1

\(\rm y^2+x^2=53\\\\(5+x)^2+x^2=53\\\\25+x^2+10x+x^2=53\\\\2x^2+10x+25-53=0\\\\2 x^2 + 10x - 28 = 0 \\\\Divide \ by \ 2 \ both \ side \ the \ equation\\\\x^2 + 5x - 14 = 0\\\\x^2-7x+2x-14=0\\\\x(x-7) + 2(x-7) =0\\\\(x-7) \ (x+2)=0\\\\x-7=0 \ \ x = 7\\\\x +2 =0 \ \ x=-2\)

The value of x= 2 is rejected because x = 2 not satisfy the equation.

Substitute 2 for the value of x in equation II

y − x = 5

y – 2 = 5

y = 5 +2

y = 7 (x =2, y =7) … Not included in the options

If x = -7

Substitute the value of x = -7 in the equation

\(\rm y -x=5\\\\y - (-7)=5\\\\y +7= 5\\\\y = 5-7\\\\y = -2\)

Hence, the solution of the system of equation is (-7, -2).

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The acronym used in assessing a patient's level of consciousness is A. AVPU.

AVPU stands for Alert, Voice, Pain, and Unresponsive. This mnemonic is commonly used by healthcare professionals to quickly and easily assess a patient's level of consciousness. Here's a brief explanation of each level:

1. Alert: The patient is fully awake, responsive, and aware of their surroundings.
2. Voice: The patient responds to verbal stimuli but may not be fully alert.
3. Pain: The patient responds only to painful stimuli, such as pinching or applying pressure.
4. Unresponsive: The patient does not respond to any stimuli, indicating a potentially critical condition.

In assessing a patient's level of consciousness, the acronym AVPU is the most suitable choice among the options provided. It allows healthcare professionals to quickly evaluate a patient's responsiveness to various stimuli and determine their level of consciousness.

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Answer:

This will plot as an upward  "V" with the vertex at x = 4/3, y = 5

Step-by-step explanation:

The absolute value will mean that y can only be positive. y will be at a minimin when the absolute value is zero. To determine that find the x that makes it zero, so

-3x + 4 = 0

-3x = -4

x = 4/3

which makes y = 5 (the minimin)

Answer:

x ≤ - 20/21

Step-by-step explanation:

- 27x - 60 ≥ 15x - 20

- 27x - 60 - 15x ≥ - 20

- 27x - 15x ≥ - 20 + 60

- 42x ≥ - 20 + 60

- 42x ≥ 40

Answer:

$34.30

Step-by-step explanation:

He pays 7 percent to health insurance.

7 percent of 490 is 34.30. (490 x 0.07)

ALSO: question 1 answer is actually $298.90

The required maximum volume of the box would be 85184 cube units.

The surface area of a box is the total area of all of the box's faces. For a box with a square base and no top, the surface area is equal to the sum of the areas of the four sides and the bottom.

To find the maximum volume of such a box, we can first find the length of one side of the square base. We can do this by dividing the given surface area by the number of sides of the box.

In this case, the box has 4 sides plus the bottom, so the length of one side is 220 / 5 = 44.

We can now use the length of one side to find the maximum volume of the box. The volume of a box with a square base and no top is equal to the length of one side cubed.

The length of one side is 44, so the maximum volume of the box is :

⇒ 44 × 44 × 44  = 85184.

Therefore, the maximum volume of the box is 85184 cube units.

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The values of x, y and z for the right triangle are: x = √6, y = 3, and z = √10 respectively.

The perpendicular height of the right triangle divides the triangle in two triangles with the same proportions as the original triangle.

√15/(y + 2) = y/√15 {opposite/adjacent}

y(y + 2) = (√15)² {cross multiplication}

y² + 2y = 15

y² + 2y - 15 = 0

by factorization;

(y - 3)(y + 5) = 0

y = 3 or y = -5

by Pythagoras rule:

(√15)² = x² + y²

15 = x² + 3²

x = √(15 - 9)

x = √6

z² = (√6)² + 2²

z = √(6 + 4)

z = √10

Therefore, the values of x, y and z for the right triangle are: x = √6, y = 3, and z = √10 respectively.

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The given differential equation is `(27xy + 45y²) + (9x² + 45xy)y' = 0`.We have to solve this differential equation by using integrating factor `u(x, y) = (xy(2x+5y))-1`.The integrating factor `u(x,y)` is given by `u(x,y) = e^∫p(x)dx`, where `p(x)` is the coefficient of y' term.

Let us find `p(x)` for the given differential equation.`p(x) = (9x² + 45xy)/ (27xy + 45y²)`We can simplify this expression by dividing both numerator and denominator by `9xy`.We get `p(x) = (x + 5y)/(3y)`The integrating factor `u(x,y)` is given by `u(x,y) = (xy(2x+5y))-1`.Substitute `p(x)` and `u(x,y)` in the following formula:`y = (1/u(x,y))* ∫[u(x,y)* q(x)] dx + C/u(x,y)`Where `q(x)` is the coefficient of y term, and `C` is the arbitrary constant.To solve the differential equation, we will use the above formula, as follows:`y = [(3y)/(x+5y)]* ∫ [(xy(2x+5y))/y]*dx + C/[(xy(2x+5y))]`We will simplify and solve the above expression, as follows:`y = (3x^2 + 5xy)/ (2xy + 5y^2) + C/(xy(2x+5y))`Simplify the above expression by multiplying `2xy + 5y^2` both numerator and denominator, we get:`y(2xy + 5y^2) = 3x^2 + 5xy + C`This is the general solution of the differential equation.

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