FIND DB HELP.
ITS GEOMETRY AND IM SO CONFUSED

Answer:

Just go up by 5

Step-by-step explanation:

Answer:

Step-by-step explanation:

1) Separate terms with roots from terms without roots.

\(x^2+4=\sqrt[\frac{1}{2} ]{4+1}\)

2) Simplify 4 + 1 to 5.

\(x^2+4=\sqrt[\frac{1}{2} ]{5}\)

3) Invert and multiply.

\(x^2+4=5^2\)

4)  Simplify  \(5^2\) to 25.

\(x^2+4=25\)

5) Subtract 4 from both sides.

\(x^2=25-4\)

6) Simplify 25 - 1 to 24.

\(x^2=21\)

7)  Take the square root of both sides.

\(x=\pm\sqrt{21}\)

Answer:

A

Step-by-step explanation:

\(\sqrt{x^{2}+4}-1=2\\\sqrt{x^{2}+4}=3\\x^{2}+4=9\\x^{2}=5\\x=(plus/minus) \sqrt{5}\)

Answer:

21 meters

Step-by-step explanation:

you can see it goes 21 meters before it hits the ground

Answer:

21 is the answer

(i) To analyze the linear programming problem using the two-phase simplex method, we need to convert the problem into standard form by introducing slack variables. The problem can be expressed as:

Minimize z = x1 + x2

subject to:

3x1 + x2 + x3 = 1

7x1 + 3x2 - x4 = 4

x1, x2, x3, x4 ≥ 0

The two-phase simplex method involves two phases: the first phase identifies an initial feasible solution, and the second phase optimizes the objective function.

In this case, we start with the artificial variables x3 and x4. In the first phase, we maximize the sum of artificial variables while minimizing the objective function. After the first phase, we check if the optimal solution is feasible (i.e., if the value of the objective function is zero).

Once a feasible solution is obtained, we move to the second phase and proceed with the standard simplex method to optimize the objective function. The optimal solution will be obtained when all artificial variables are eliminated, and the objective function reaches its minimum value.

(ii) Yes, this problem can be solved using the dual simplex method. The dual simplex method is used to solve linear programming problems by analyzing the dual problem. However, to apply the dual simplex method, the problem must satisfy certain conditions, such as having a feasible solution and a bounded feasible region.

In this case, since the problem is a minimization problem and has a feasible solution, the dual simplex method can be applied. It involves analyzing the dual problem, constructing a dual tableau, and performing iterations to improve the objective function value.

By applying the dual simplex method, we can find the optimal solution and determine if any additional iterations are required to reach the minimum value of the objective function while satisfying the constraints.

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Answer:

Step-by-step explanation:

f(0)= -7(0)+1= 0 + 1 = 1

Answer:

no solution

-6 ≠ 2

Step-by-step explanation:

y = 2x + 6

2x - y = 2

substitute for y:

2x - (2x + 6) = 2

combine like terms:

-6 ≠ 2

The prefrontal cortex is responsible for regulating higher cognitive functioning of the brain.

What is prefrontal cortex?

In the frontal lobe of the brain, there is a structure called the prefrontal cortex. It carries out cognitive functions like memory, attention, planning, flexibility, etc. It is regarded as the region of the brain that develops the least quickly

Prefrontal cortex is located in the frontal lobe.

The prefrontal cortex is responsible for regulating higher cognitive functioning of the brain.

Mid-twenties is when it reaches maturity. This explains why teenagers are more likely to establish harmful behaviours than younger kids and why adults are better at planning and thinking. An attention deficit and trouble remembering details can be brought on by prefrontal cortex (PFC) damage. Moreover, it may result in psychological changes, a diminished capacity for feeling, and bodily impairments associated with daily activities.

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Answer:

False, because the lines do intersect at any point since there are no right angles

Step-by-step explanation:

Answer:

step 4

Step-by-step explanation:

Answer:

Step  4

Step-by-step explanation:

\(\frac{1 + 3^2}{5} + |-10| \div 2\\\\Step \ 1 : \frac{1 + 3^2}{5} + 10 \div 2\\\\step \ 2 : \frac{1 + 9}{5} + 10 \div 2 \\\\Step \ 3 : \frac{10}{5} + 10 \div 2\\\\Step\ 4: 2 + 10 \div 2\\\\Step \ 5 : 2 + 5 \ \ \ \ \ \ \ \ \ \ \ \ \ [ \ given : 12 \div 2 \ ]\\\\Step \ 6 : 7\)

Answer:

14 chocolate bars and change is 0.8

On a graph, the absolute value of a number is always non-negative.

The absolute value of a number is defined as the distance of that number from zero on the number line. Since the distance can never be negative, the absolute value of a number is always non-negative.

This is reflected in the graph of an absolute value function. The graph of an absolute value function, |x| is a V-shape that opens upward, with the vertex of the V being the point where the absolute value function equals zero. The two arms of the V extend out from this point, going in opposite directions along the number line. The coordinates of the vertex (0,0) and the graph is always non-negative.

It's important to note that although the absolute value is always non-negative on a graph, the input value (x) can be both positive and negative. The output of the absolute value function (|x|) will always be positive.

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Answer: y=2x-1

Step-by-step explanation:

In slope intercept form y=Mx+b

Mx=slope and b=intercept

Y=2x-1

The equation of line with slope m = 2 and y-intercept is -1 is given by

y = 2x - 1

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be represented as A

Now , the value of A is

Let the slope of the line m = 2

Let the y intercept of the line b = -1

Now , equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

Substituting the values in the equation , we get

y = 2x - 1   be equation (1)

Therefore , the value of A is y = 2x - 1

Hence , the equation of line is y = 2x - 1

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Answer:

answer is C

Step-by-step explanation:

Answer:

10 smoothies

Step-by-step explanation:

because each 3/8th yields 2 smoothies and the leftovers from each cup made 2 more.

Answer:

21$

Step-by-step explanation:

42÷6=7

7×3=21

Answer:

21 ( unit rate is 7$ per car)

Step-by-step explanation:

First you divide 42 by 6 which equals 7

and then you do 7x3 which equals 21

The percentage of the data values in the box-and-whiskers plot, that are greater than or equal to 92, which is the 75th percentile, based on the five number summary, are 25 percent of the data.

The five number summary of a box-and-whiskers plot are value of the minimum, the first quartile, the median, the third quartile and the maximum value of the set of data.

Please find attached the possible box-and-whiskers plot in the question, obtained from a similar question on the internet

The five number summary from the box-and-whiskers plot are;

Minimum value = 82

The first quartile or the 25th percentile = 87

The median, second quartile or the 50th percentile = 90

The third quartile or the 75th percentile = 92

The value 92 on the data represents the 75th percentile, therefore, the percentage of the data that are greater than or equal to 92 are; 100 - 75 = 25 percent

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A continuous time system can behave roughly throughout a variety of periods using a discretized state matrix. A continuous time condition matrix should be used in its place if these requirements are not satisfied since a discretized state matrix might not adequately depict the performance of a continuous time system.

A continuous time condition matrix is a matrix that is used to indicate the state of a system at any moment, as opposed to a discretized state matrix, which is used to describe the status of a system at discrete time intervals. Under the following conditions, a discrete-time state matrix is identical to a time series state matrix:

The system may be regarded as being in stable equilibrium at each time point since the time gaps between every discretization are short enough. This indicates that the behavior of the system does not drastically vary from one-time point to the next.

Over the time frames between each discretization, a linear model accurately predicts the behavior of the system. This means that the behavior of the system can be precisely predicted by a linear equation of the type "Ax = Bu," where A as well as B are matrices and x as well as u are vectors that, respectively, represent the system's state and input.

Over the intervals between each discretization, the system's input remains constant. This indicates that the system's input does not drastically vary from one-time point to the next.

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There are several different sampling methods that could be employed for this study, including:

Simple random sampling: This method involves randomly selecting a certain number of students from each campus and measuring the distance between their hometowns and their campuses.

Stratified random sampling: This method involves dividing the student population at each campus into different strata (e.g. by major or year in school) and then randomly selecting a certain number of students from each stratum.

Cluster sampling: This method involves randomly selecting a certain number of campuses and then measuring the distance between the hometowns of all students at those campuses and their respective campuses.

Multi-stage sampling: This method involves using a combination of the above methods, such as first using cluster sampling to select a certain number of campuses and then using stratified random sampling to select a certain number of students from each campus.

This study would be an enumerative study because it seeks to measure the characteristics of a population, in this case, the average distance between the hometowns of students and their campuses, by counting and measuring them.

It is not an analytic study because it doesn't involve testing a hypothesis or making causal inferences.

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Answer:

\(y=x^{2} -3x+2\)

Step-by-step explanation:

Give me Brainllest plz T-T

Answer:

0

Step-by-step explanation:

it displays the computed sum and product of the diagonal elements.

Here's a MATLAB code to find the sum and product of the diagonal elements of a given matrix `A`, as well as an example execution for `A = ones(5)`:

```matlab

% Define the matrix A

A = ones(5);

% Get the size of the matrix

[n, ~] = size(A);

% Initialize variables for sum and product

diagonal_sum = 0;

diagonal_product = 1;

% Calculate the sum and product of diagonal elements

for i = 1:n

   diagonal_sum = diagonal_sum + A(i, i);

   diagonal_product = diagonal_product * A(i, i);

end

% Display the results

disp("Sum of diagonal elements: " + diagonal_sum);

disp("Product of diagonal elements: " + diagonal_product);

```

Example execution for `A = ones(5)`:

```

Sum of diagonal elements: 5

Product of diagonal elements: 1

```

In this example, `A = ones(5)` creates a 5x5 matrix filled with ones. The code then iterates over the diagonal elements (i.e., elements where the row index equals the column index) and accumulates the sum and product. Finally, it displays the computed sum and product of the diagonal elements.

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Answer:

multiply the number in the numerator by the denominator.

Answer:

She made $121000.

Step-by-step explanation:

The money the agent sold was:

4*175000=700000 (dollars)

but she only gets 13% of this, so she earned:

700000*0.13=91000 (dollars)

She also makes $30000 per year, so the total income she earned was:

91000+30000=121000

Answer:

Your answer is A

y≤ 1/2x + 3

y≥ 1/2x - 4

Step-by-step explanation:

6.14 Checkpoint: Systems of Linear Inequalities

I took the test

Answer:

Which systems of inequalities does the graph show?

A

O y ≤ 1/2x + 3

   y ≥ 1/2x - 4

Step-by-step explanation:

You're welcome.

If a pollster wishes to estimate the number of left-handed scientists. The sample that is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4% is: 176.71.

Using this formula to find the sample

n =Z²π (1-π) ÷ e²

Where:

n =sample size =?

Z =  Z -score for 95% confidence level =1.960

π = Population proportion = 0.08

e = Margin of error = 0.04

Let plug in the formula

n = 1.96² × 0.08 × (1 - 0.08) ÷ 0.04²

n =  3.8416× 0.08 × 0.92 ÷ 0.0016

n = 176.71

Therefore the sample is 176.71.

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Since the volume of the sphere V = 36π cm³is greater than that of the cone, V' = 21π cm³ the ice cream will overflow.

The volume of a sphere is given by V = 4πr³/3 where r = radius of sphere

Now if the ice cream above is going to melt when it does, will it fit in the cone or will it overflow? Since the ice cream is a sphere, the ice cream will not overflow if the volume of the ice cream equals the volume of the cone. If is greater than the volume of the cone, it will overflow.

Now, since the ice cream is a sphere, its volume is given by V = 4πr³/3 where r = radius of sphere = 3 cm

So, substituting this into the equation, we have that

V = 4πr³/3

V = 4π(3 cm)³/3

V = 4π × 27 cm³/3  

= 4π × 9 cm³

= 36π cm³

Also, since the volume of the cone is given by V' = 1/3πr²h where r = radius of cone = 3 cm and h = height of cone = 7 cm

So, substituting the value of the variables into the equation, we have that

V' = 1/3πr²h

V' = 1/3π(3 cm)² × 7 cm

= 1/3π × 9 cm² × 7 cm

= 3π cm² × 7 cm

= 21π cm³

We see that V = 36π cm³ > V' = 21π cm³

Since the volume of the sphere is greater than that of the cone, the ice cream will overflow.

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If one mass increases by a factor of 6 and the other mass increases by a factor of 1.5, the distance between them would need to be adjusted to maintain the same gravitational force as before. To calculate the new distance, we can use the inverse square law of gravitational force.

According to the inverse square law of gravitational force, the force (f) between two masses is given by the equation f = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses, and r is the distance between them.

To maintain the same force, we need to adjust the distance (r) between the masses. Let's assume the original distance is represented by r_0. The masses can be denoted as m1_0 and m2_0 initially, and m1_f and m2_f after the increase.

To find the new distance (r_f), we can set up the equation (G * (m1_0 * m2_0) / r_0^2) = (G * (m1_f * m2_f) / r_f^2). Since the gravitational constant and the masses remain the same, we can simplify the equation to (m1_0 * m2_0) / r_0^2 = (m1_f * m2_f) / r_f^2.

Given that one mass increases by a factor of 6 (m1_f = 6 * m1_0) and the other mass increases by a factor of 1.5 (m2_f = 1.5 * m2_0), we can substitute these values into the equation and solve for the new distance. Rearranging the equation, we have (m1_0 * m2_0) / r_0^2 = (6 * m1_0 * 1.5 * m2_0) / r_f^2.

Simplifying further, we find r_f^2 = (6 * 1.5) * r_0^2, which can be written as r_f = sqrt(9) * r_0. Therefore, the masses need to be placed at a distance that is 3 times the original distance (r_f = 3 * r_0) to experience the same gravitational force as before.

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Answer:

x <= 9.75

Step-by-step explanation:

W = x

L = 3x

P = 2L + 2W <= 78

2(3x) + 2(x) <= 78

6x + 2x <= 78

8x <= 78

x <= 9.75

For the given rectangle, the width at the instant the width is decreasing at the rate of 0.5 meters per second is 5 m and the rate of change of diagonal is 3.59m/s.

What is meant by rate of change?

How quickly something changes over time is referred to as its rate of change. So, it is not the size of the individual changes themselves but rather their rate of acceleration or slowdown that matters. Either a positive or negative rate of change is possible. Simply said, the rate of change is calculated by dividing the amount of change in one item by the equal amount of change in another.

Given,

  The area of rectangle = 200 m²

   The length l is increasing at a rate of 4m/s.

If t is the time, then l = 4t

a) We have to find the width w at the instant it is decreasing at the rate of 0.5m/s.

 We know area = l*w

   200 = l*w

200 = 4t * w

w = 200/4t = 50 t⁻¹

dw/dt = -50t⁻²

dw/dt = -0.5

So,

-0.5 = -50 t⁻²

t² = -50 / -0.5 = 100

t = 10

Then l = 4*10 = 40m

 w = 200/l = 200/40 = 5m

b) when w = 10m

   area = l * w = 4t * w

    200 = 4t * 10

t = 5s

diagonal k² = l² + w² = 16t² + 100

k = √(16t² + 100)

Differentiating,

dk/dt = \(\frac{32t}{2\sqrt{16t^2 + 100} }\)

when t = 5s

dk/dt = 160/ 44.7 = 3.59 m/s

Therefore for the given rectangle, the width at the instant the width is decreasing at the rate of 0.5 meters per second is 5 m and the rate of change of diagonal is 3.59m/s.

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To find the center of enlargement, we need to determine the scale factor of enlargement between the original quadrilateral ABCD and the image quadrilateral A'B'C'D'.

We can do this by finding the ratio of the corresponding side lengths. Let the scale factor be k. Then,

AB' = k * AB

and

AA' = k * AA'

Using the distance formula, we can find the lengths of AB and AA',

AB = sqrt((6-(-1))^2 + (3-3)^2) = sqrt(50)

AA' = sqrt((11-3)^2 + (-5-(-1))^2) = sqrt(80)

Thus, k = AB' / AB = AA' / AA' = sqrt(80 / 50) = sqrt(8 / 5) = 1.7889 (approx)

Next, we can use the formula for the center of enlargement, which states that the center of enlargement is the point of intersection of the corresponding lines joining the original and the image points.

The line joining A(3,-1) and A'(11,-5) has the equation y = -x/2 + 5/2

The line joining B(3,6) and B'(6,8) has the equation y = (2/3)x + 6

\

Solving for the point of intersection, we get:

x/2 + 5/2 = (2/3)x + 6

=> x = 21.6

Substituting x in either of the equations, we get:

y = -x/2 + 5/2

=> y = -21.6/2 + 5/2

=> y = -5.55 (approx)

Therefore, the center of enlargement is approximately (21.6, -5.55).

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To find the center of enlargement, we need to determine the scale factor of enlargement between the original quadrilateral ABCD and the image quadrilateral A'B'C'D'.

We can do this by finding the ratio of the corresponding side lengths. Let the scale factor be k. Then,

AB' = k * AB

and

AA' = k * AA'

Using the distance formula, we can find the lengths of AB and AA',

AB = sqrt((6-(-1))^2 + (3-3)^2) = sqrt(50)

AA' = sqrt((11-3)^2 + (-5-(-1))^2) = sqrt(80)

Thus, k = AB' / AB = AA' / AA' = sqrt(80 / 50) = sqrt(8 / 5) = 1.7889 (approx)

Next, we can use the formula for the center of enlargement, which states that the center of enlargement is the point of intersection of the corresponding lines joining the original and the image points.

The line joining A(3,-1) and A'(11,-5) has the equation y = -x/2 + 5/2

The line joining B(3,6) and B'(6,8) has the equation y = (2/3)x + 6

\

Solving for the point of intersection, we get:

x/2 + 5/2 = (2/3)x + 6

=> x = 21.6

Substituting x in either of the equations, we get:

y = -x/2 + 5/2

=> y = -21.6/2 + 5/2

=> y = -5.55 (approx)

Therefore, the center of enlargement is approximately (21.6, -5.55).

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Answer:

1: X = 4

Step-by-step explanation:

2 times 4 equals 8 minus 1 equals 7.