!! 100 points for anyone who answers this problem !!

1,673,581,437 x 9,852,463,267 =__________
NO CALCULATORS!
lets see how smart you are >:)

To determine whether the assumption of constant error variance is satisfied for a model with tut, independent variables x, and x₂, you would examine the residual plot where the residuals are plotted against predicted values y.

This plot is also known as the plot of residuals versus fitted values. In this plot, if the residuals are randomly scattered around the horizontal line of zero, then the assumption of constant error variance is satisfied. However, if there is a pattern in the residuals, such as a funnel shape or a curve, then the assumption of constant error variance may not be met. It is important to ensure that the assumption of constant error variance is met, as violation of this assumption can lead to biased and inefficient estimates of the model parameters. Additionally, it can affect the reliability of statistical inferences and lead to incorrect conclusions.
In summary, to determine whether the assumption of constant error variance is satisfied for a model with tut, independent variables x, and x₂, you would examine the residual plot where the residuals are plotted against predicted values y. It is important to check this assumption to ensure the validity of the model and the accuracy of the results.This plot allows you to assess the variance of the residuals and identify any patterns, which could indicate that the assumption of constant error variance may not be met. If the plot shows no discernible pattern and the spread of residuals appears to be uniform across the range of predicted values, the assumption of constant error variance is likely satisfied.

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The values of sin A and cos A for A = 45 degrees are √2/2

Let's consider the angle measure A = 45 degrees. Then we need to find sin A and cos A.

Sin A: We know that sin A = opposite side/hypotenuse of a right triangle.

Here, A = 45 degrees, and

let's consider a right triangle with the opposite side as 1 unit and the hypotenuse as √2 units.

By using the above formula, we get;

sin A = opposite side/hypotenuse = 1/√2

Therefore, sin A = (1/√2) × (√2/√2) = √2/2cos A:

We know that cos A = adjacent side/hypotenuse of a right triangle.

Here, A = 45 degrees, and

let's consider a right triangle with the adjacent side as 1 unit and the hypotenuse as √2 units.

By using the above formula, we get;

cos A = adjacent side/hypotenuse = 1/√2

Therefore, cos A = (1/√2) × (√2/√2) = √2/2

So, the values of sin A and cos A for A = 45 degrees are √2/2.

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Answer:

-5

Step-by-step explanation:

-3y=-3x+15

y=x-5

make x=0

y=0-5

y=-5

Answer:

He jogged for 24 minutes and ran for 26 minutes

Step-by-step explanation:

Mathematically,

distance = speed * time

Let the amount of time jogged be x and the amount of time ran be y hours

50 minutes to hours = 50/60 = 5/6

so x + y = 5/6

Total distance jogged is 7x and total distance ran is 12y

7x + 12y = 8

So we have two equations;

x + y = 5/6

7x + 12y = 8

From i, x = 5/6-y

So;

7(5/6 - y) + 12y = 8

35/6 - 7y + 12y = 8

Multiply through by 6

35 + 30y = 48

30y = 13

y = 13/30

13/30 in minutes is 13/30 * 60 = 26 minutes

So the amount of time jogged is 50-26 = 24 minutes

The root of the equation sin(x) = 2 - 3 is x = 0, determined using the false position method.

To find the root of the equation sin(x) = 2 - 3 using the false position method, we need to perform iterations by updating the bounds of the interval based on the function values.

Let's define the function f(x) = sin(x) - (2 - 3).

First, we need to find an interval [a, b] such that f(a) and f(b) have opposite signs. Since sin(x) has a range of [-1, 1], we can choose an initial interval such as [0, π].

Let's perform the iterations:

Iteration 1:

Calculate the value of f(a) and f(b) using the initial interval [0, π]:

f(a) = sin(0) - (2 - 3) = -1 - (-1) = 0

f(b) = sin(π) - (2 - 3) = 0 - (-1) = 1

Calculate the new estimate, x_new, using the false position formula:

x_new = b - (f(b) * (b - a)) / (f(b) - f(a))

= π - (1 * (π - 0)) / (1 - 0)

= π - π = 0

Calculate the value of f(x_new):

f(x_new) = sin(0) - (2 - 3) = -1 - (-1) = 0

Since f(x_new) is zero, we have found the root of the equation.

The root of the equation sin(x) = 2 - 3 is x = 0.

The root of the equation sin(x) = 2 - 3 is x = 0, determined using the false position method.

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The approximate probability that the pH measurement of a randomly selected water specimen is between 7.5 and 8.2 is approximately 0.7011 or 70.11%.

To find the approximate probability that the pH measurement of a randomly selected water specimen is between 7.5 and 8.2, we can use the properties of the normal distribution.

Given:

Mean (μ) = 8

Standard deviation (σ) = 0.3

We need to find the probability of the pH measurement falling between 7.5 and 8.2. Let's denote this as P(7.5 < X < 8.2), where X represents the pH measurement.

To calculate this probability, we can standardize the values using the z-score formula:

z1 = (7.5 - 8) / 0.3

z2 = (8.2 - 8) / 0.3

Calculating the z-scores:

z1 ≈ -1.67

z2 ≈ 0.67

Now, we can look up the z-scores in the standard normal distribution table or use a calculator to find the corresponding probabilities.

Using a standard normal distribution table or calculator, we can find:

P(Z < z1) ≈ P(Z < -1.67) ≈ 0.0475 (approximately)

P(Z < z2) ≈ P(Z < 0.67) ≈ 0.7486 (approximately)

To find the probability between 7.5 and 8.2, we subtract the lower probability from the upper probability:

P(7.5 < X < 8.2) ≈ P(Z < z2) - P(Z < z1)

≈ 0.7486 - 0.0475

≈ 0.7011

Therefore, the approximate probability that the pH measurement of a randomly selected water specimen is between 7.5 and 8.2 is approximately 0.7011 or 70.11%.

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Answer:

30 shirts

Step-by-step explanation:

What we know:

30 seconds = 3 shirts

1 minute 30 seconds = 9 shirts

30 seconds per each 3 shirts

shirts:      3, 6, 9, 12, 15, 18, 21, 24, 27, 30

minutes: .5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5

Answer:

30 shirts

Step-by-step explanation:

The required Matlab code to find the greatest common divisor of a number using the Euclidean algorithm is shown.

To find the greatest common divisor (GCD) of two numbers using the Euclidean algorithm in MATLAB, you can use the following code:

% Replace '12345678' with your actual student number

studentNumber = '12345678';

% Extract the first 4 digits as the first number

firstNumber = str2double(studentNumber(1:4));

% Extract the last 3 digits as the second number

secondNumber = str2double(studentNumber(end-2:end));

% Find the GCD using the Euclidean algorithm

gcdValue = gcd(firstNumber, secondNumber);

% Display the result

disp(['The GCD of ' num2str(firstNumber) ' and ' num2str(secondNumber) ' is ' num2str(gcdValue) '.']);

Make sure to replace '12345678' with your actual student number. The code extracts the first 4 digits as the first number and the last 3 digits as the second number using string indexing. Then, the gcd function in MATLAB is used to calculate the GCD of the two numbers. Finally, the result is displayed using the disp function.

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Cross multiplying

20 × 5 = t × t

100 = 2t

Dividing 2 on the opposite side

100/2 = t

t = 50

Answer:

45.00%

Step-by-step explanation:

The total answers count 40 - it's 100%, so we to get a 1% value, divide 40 by 100 to get 0.40. Next, calculate the percentage of 18: divide 18 by 1% value (0.40), and you get 45.00% - it's your percentage grade.

Please rate me brainliest

Answer:

Option D. 5 EE 6 ÷ 6.6 EE 4

Step-by-step explanation:

Data obtained from the question include the following:

Area of land purchased = 6.6×10^4 square miles

Cost = $ 5×10^6

To determine the key strokes on a calculator which will give the cost the

United States paid for each square mile of Florida, let us calculate cost of 1 square mile.

This can be obtained as follow:

6.6×10^4 sq mile = $ 5×10^6

Therefore,

1 sq mile = $ 5×10^6 ÷ 6.6×10^4

In calculator, the key strokes will be:

5 EE 6 ÷ 6.6 EE 4

Answer:

Like Eduard22sly said D). 5 EE 6 ÷ 6.6 EE 4 is correct.

plus i took the test 100% :)

Answer:

\( {x}^{2} + 12x - 28 = 0\)

\((x + 14)(x - 2) = 0\)

x = -14, 2

Step-by-step explanation:

x 2+12x−28=0

(�+14)(�−2)=0

(x+14)(x−2)=0

x = -14, 2

Answer:

That he made a medicine that reduces coughing

Step-by-step explanation:

Answer:

I can't see that very good, but I counted 8 units.

Step-by-step explanation:

% Initialize variables

delta = 1/2;

M = 100;

N = 150;

% Create a vector of particle positions

x = zeros(M, N);

% Simulate the random walk

for n = 1:N

 for i = 1:M

   x(i, n) = x(i, n - 1) + randi([-1, 1], 1, 1) * delta;

 end

end

% Plot the particle positions

figure

plot(x)

xlabel('Timestep')

ylabel('Position')

The first paragraph of the answer summarizes the code. The second paragraph explains the code in more detail.

In the first paragraph, the code first initializes the variables delta, M, and N. delta is the step size, M is the number of particles, and N is the number of timesteps. The code then creates a vector of particle positions, x, which is initialized to zero. The next part of the code simulates the random walk.

For each timestep, the code first generates a random number between -1 and 1. The random number is then used to update the position of each particle. The final part of the code plots the particle positions. The x-axis of the plot represents the timestep, and the y-axis represents the position.

The code can be modified to simulate different types of random walks. For example, the step size can be changed, or the probability of moving forward or backward can be changed. The code can also be used to simulate random walks in multiple dimensions.

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To find the y-coordinate of point P on the unit circle, given that its x-coordinate is 5/13, we can utilize the Pythagorean identity for points on the unit circle.

The Pythagorean identity states that for any point (x, y) on the unit circle, the following equation holds true:

x^2 + y^2 = 1

Since we are given the x-coordinate as 5/13, we can substitute this value into the equation and solve for y:

(5/13)^2 + y^2 = 1

25/169 + y^2 = 1

To isolate y^2, we subtract 25/169 from both sides:

y^2 = 1 - 25/169

y^2 = 169/169 - 25/169

y^2 = 144/169

Taking the square root of both sides, we find:

y = ±sqrt(144/169)

Since we are dealing with points on the unit circle, the y-coordinate represents the sine value. Therefore, the y-coordinate of point P is:

y = ±12/13

So, the y-coordinate of point P can be either 12/13 or -12/13.

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

Answer:

9+3+9 ÷7

Step-by-step explanation:

9+3+9=21÷7=3

Answer:

1 - 1 = 0

1 + 1 = 2

Step-by-step explanation:

:)

Answer:

1-1=0 1+1=2

hope this helps

have a good day :)

Step-by-step explanation:

A quarterback throws an incomplete pass. The height of the football at time t is modeled by the equation h(t) = –16t² + 40t + 7. Rounded to the nearest tenth, the solutions to the equation when h(t) = 0 feet are –0.2 s and 2.7 s.

the solution to be eliminated is -0.2s this is because time do not have negative values

ax² + bx + c = 0 is a quadratic equation, which is a second-order polynomial equation in a single variable. a.

It has at least one solution because it is a second-order polynomial equation, which is guaranteed by the algebraic fundamental theorem. The answer could be real or complex.

Considering the given function, the answer is both real one is negative the other is positive.

The solution in this case represents time, and time of negative value do not apply in real life

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we get that the equation that models the situation is:

when t=2. We get that

so we get that after 7 years ( 1997 )

\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{68\% of 32}}{\left( \cfrac{68}{100} \right)32}\implies 21.76\)

Answer: 21.76 or 0.22

Step-by-step explanation: You put in 68% and 32 then you'll get 21.76

32=100

and .68%

32=100%(1)

68%(2)

.68/100

Then 0.22 or 21.76

The steps of the perpendicular bisector construction in order from 1 to 4 are;

1) Open the compass

2) Draw arcs above and below the segment to be bisected

3) Draw arcs from the other endpoint of the segment to be bisected

4) Join the intersection of the arcs with a line

A perpendicular bisector is a line, that is perpendicular to another line, and which divides the other line into two congruent segments.

The steps of a perpendicular bisector construction includes;

1) Opening the compass to a radius that is more than half the length of the segment to be bisected

2) With the radius of the compass opening in step 1, place the compass at one endpoint of the segment to be bisected and draw arcs above and below the the segment to be bisected

3) With the same radius of the compass from step 1, place the compass at the other endpoint and draw arcs above and below the segment to be bisected to intersect the arcs drawn in step 2

4) With a straightedge, draw a straight line joining the point of intersection of the arcs in step 3. The line is the perpendicular bisector of the segment.

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The ball hits the ground after x = 6 seconds.

Two or more expressions with an equal sign are defined as an equation.

The given equation is h(x) = -2x² + 8x + 24.

(a) when the ball is thrown, the time is t = 0 sec.

Therefore, the height of the ball when it is thrown is,

h(0) = -2(0)² +8(0) +24

h(0) = 24

(b) The derivative of the function is,

h'(x) = -4x + 8

Substitute h'(x) = 0 into the above equation,

0 = -4x +8

4x = 8

x = 2

The second derivative of the function is,

h''(x) = -4

Since the second derivative of the function is negative, the function is maximum at x = 2.

(c) The maximum height of the ball is,

h(2) = -2(2)² + 8(2) +24

h(2) = -8 +16 +24

h(2) = 32

(d) The ball hits the ground when h(x)= 0, therefore,

0 = -2x² +8x +24

0 = -2x² +12x - 4x + 24

0 = -2x(x - 6) - 4(x - 6)

0 = (x - 6)(-2x - 4)

(x - 6) = 0 or (-2x-4) = 0

x = 6 or x = -2

Since time cannot be negative, it follows, x = 6 seconds.

Hence, the ball hits the ground after x = 6 seconds.

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Answer:

the distance between points M(2,6) and N(3,1)

MN = \(\sqrt{(3 -2)^{2} + (1 - 6)^{2} }\) =\(\sqrt{26}\)

Answer:

10

Step-by-step explanation:

Answer:

Associative property