Can someone plz help me with this one problem plz!!!

I WILL MARK BRAINLIEST!!!

Answer:

This is an experiment because a treatment was applied to a group.

Step-by-step explanation:

There are two groups, The first group used the computer program while the second group did not therefore this is an experiment. An experiment involves changing an independent variable to see how it affects a dependent variable. The dependent variable in this case  determining the effect of a new computer program on learning while the independent variables was testing with the computer program and not testing with the program.

Rectangle X has a length of 17 meters and a width of 9 meters. Rectangle Y has a length of 17 meters and a width of 12 meters. You place both rectangles side-by-side to create a new rectangle Rectangle Z, 76 meter is the perimeter of Rectangle Z

The radius of a shape's edge is known as the perimeter. Discover how to calculate a shape's perimeter by multiplying its side lengths. By multiplying the lengths of all the sides of a form, the perimeter is always determined. The length of a two-dimensional shape's perimeter is referred to as its perimeter. The total length of all the sides of the thing is also a definition for it. The perimeter of the form is equal to the algebraic sum of each side's length. For the various geometric forms, there are formulae accessible.

Rectangle X has a length of 17 meters and a width of 9 meters

Rectangle Y has a length of 17 meters and a width of 12 meters.

So, perimeter of rectangle Z = 2 (length + width)

= 2 [17 + (9 +12)]

= 2 × 38

= 76 meters.

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The rules of the calculation are:

The complete question is added as an attachment

The equation is given as:

0.738 × 0.28 = 0.20664

When approximated, we have:

0.738 × 0.28 ≈ 0.21

The above approximation can mean any of the following:

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Answer: a

Step-by-step explanation:

Answer:

The following equations are equivalent: 2 + x = 5, x + 1 = 4, and -5 + x = -2. These three options are A, B, and E.

To find equivalent equations, we can simplify them by using algebraic operations such as adding, subtracting, multiplying, or dividing both sides by the same number. Equivalent equations have the same value for x when we solve them.

For example, to simplify 2 + x = 5, we can subtract 2 from both sides and get x = 3. Similarly, to simplify x + 1 = 4, we can subtract 1 from both sides and get x = 3. To simplify -5 + x = -2, we can add 5 to both sides and get x = 3. Therefore, these three equations are equivalent because they have the same solution for x.

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

(5x + 4y = 8) 2 = 10x+8y=16

(2x - 3y = 17)5 = 10x-15y=85

we can pick one of the equation and multiply it by a -1 which equals:

10x+8y=16

-10x+15y=-85

and -10 and 10 cancels out.

add 8 and 15 = 23y

add -85 and 16 = -69

divide -69 by 23 whcih equals -3

plug in the y value in any of the equation, i chose 2x - 3y = 17

you get 2x+9=17

2x=8

x=4

Step-by-step explanation:

im not really sure because there is no question

Step-by-step explanation:

'x plus five is twenty three'

Answer:

x+5=23

Step-by-step explanation:

Answer: Yes it would be the same so 20

Step-by-step explanation:

Given vector field, F(x, y, z) = y cos (xy) i + x cos (xy) j – sin z k To calculate the curl of F, we need to take the curl of each component and subtract as follows,∇ × F = ( ∂Q/∂y - ∂P/∂z ) i + ( ∂P/∂z - ∂R/∂x ) j + ( ∂R/∂x - ∂Q/∂y ) k...where P = y cos(xy), Q = x cos(xy), R = -sin(z)

Now we calculate the partial derivatives as follows,

∂P/∂z = 0, ∂Q/∂y = cos(xy) - xy sin(xy), ∂R/∂x = 0...

and,

∂P/∂y = cos(xy) - xy sin(xy), ∂Q/∂z = 0, ∂R/∂y = 0

Therefore,

∇ × F = (cos(xy) - xy sin(xy)) i - sin(z)j

The curl of F is given by:

(cos(xy) - xy sin(xy)) i - sin(z)j.

To state whether F is conservative, we need to determine if it is a conservative field or not. This means that the curl of F should be zero for it to be conservative. The curl of F is not equal to zero. Hence, the vector field F is not conservative. Let C be the curve joining the origin (0,1,-1) to the point with coordinates (1, 2V2,2) defined by the following parametric curve:

r(t) = n* i + t}j + tcos atk, 15t52.

The curve C is defined as follows,r(t) = ni + tj + tk cos(at), 0 ≤ t ≤ 1Given vector field, F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk Using the curve parameterization, we get the line integral as follows,∫CF.dr = ∫10 F(r(t)).r'(t)dt...where r'(t) is the derivative of r(t) with respect to t

= ∫10 [(t cos(at))(cos(n t)) i + (n cos(nt))(cos(nt)) j + (-sin(tk cos(at)))(a sin(at)) k] . [i + j + a tk sin(at)] dt

= ∫10 [(t cos(at))(cos(n t)) + (n cos(nt))(cos(nt)) + (-a t sin(at) cos(tk))(a sin(at))] dt

= ∫10 [(t cos(at))(cos(n t)) + (n cos(nt))(cos(nt)) - a^2 (t/2) (sin(2at))] dt

= [sin(at) sin(nt) - (a/2) t^2 cos(2at)]0^1

= sin(a) sin(n) - (a/2) cos(2a)

The vector field F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk is given. Firstly, we need to calculate the curl of F. This involves taking the curl of each component of F and subtracting. After calculating the partial derivatives of each component, we get the curl of F as (cos(xy) - xy sin(xy)) i - sin(z)j. Next, we need to determine whether F is conservative. A conservative field has a curl equal to zero. As the curl of F is not equal to zero, it is not a conservative field. In the second part of the problem, we have to calculate the scalar line integral of the vector field F. dr along the curve C joining the origin to the point with coordinates (1, 2V2, 2). We use the curve parameterization to calculate the line integral. After simplifying the expression, we get the answer as sin(a) sin(n) - (a/2) cos(2a).

The curl of the given vector field F(x, y, z) = y cos(xy) i + x cos(xy)j – sin zk is (cos(xy) - xy sin(xy)) i - sin(z)j. F is not conservative as its curl is not zero. The scalar line integral of the vector field F along the curve C joining the origin to the point with coordinates (1, 2V2,2) is sin(a) sin(n) - (a/2) cos(2a).

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Final Answer: The position of car is at 4.

Here position of car is given by p(t) = \(t^2+4t-17\)

Velocity is rate of change of function so we will calculate derivative of

p(t).

\(dp/dt = 2t+4\)

We want to find the position of car when it moves at a velocity of 10.

so dp/dt = 10

2t +4 = 10

2t = 6  

t = 3

Hence at t = 3 the position of car will be determined.

p(3) = 3^2 + 4*3 -17

p(3) = 4.

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Answer:

-6, -7

Step-by-step explanation:

basically

-4 5/8 - x >0

so

x< -4 5/8

you just need 2 values less than -4 5/8

like -6 and -7

The  possible values of x could be x = -20 or  x = -10 that satisfy the inequality.

Given: -4 5/8 - x > 0

To find two possible values of x that make the expression -4 5/8 - x positive, set up an equation and solve for x.

First, let's convert -4 5/8 to an improper fraction.

The improper fraction equivalent of -4 5/8 is -37/8.

So, -37/8 - x > 0

To isolate x, move -37/8 to the other side of the inequality by adding it to both sides:

x < -37/8

Now, Two possible values of x could be:

x = -20 or  x = -10

Both of these values are less than -37/8, so they satisfy the inequality and make the expression -4 5/8 - x positive.

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Answer:

Step-by-step explanation:

1. 34 animals because of 34 heads.

94 legs: 4 per cow, 2 per chicken

x= # of cows

y= # of chickens

so x+y=34

4x+2y=94

Multiply the first equation by -2 is -2x-2y=-68 and add it to the first equation.

which is 2x=26. so x=13. Since x+y=34, 13+y=34.

Therefore, y=21

13 cows and 21 chickens.

2. lets say

pizza=y

soda=x

6x+x=14 combine like terms

7x=14 divide both sides by 7

x=2

So a soda is $2.

6*2=12. So the pizza is $12.

12+2=14. So it's correct.

3.

# of DVDS=x

# of Bluray= y

11x+17y=95

x+y=7

dvds-4

blu-ray-3 (I just did trial and error, but it's correct)

4.  

# of 2-points= x

# of 3-points= y

2x+3y=18

2(6)+3(2)=18

so 6 two-point shots and 2 three-point shots.

5.

12 coins are quarters and 14 are dollar coins.

let q stand for the number of quarters

and 26 coins in total

26-q= dollar coins

x=dollar coins too

so its 1x+.25(26-x)=17

1x+6.5-0.25x=17

.75x+6.5=17

.75x=10.5

x=14

17-14=3

3*4= 12 since 4 quarters in a dollar.

Answer:

in Right triangles you can use this formula to find altitude by using two parts which altitude has made on the base

H² = b¹ × b²

So using this formula (which can be proven by triangle similarity) can help us to find x

10² = 4x × x ===>> x =5

By using Chebyshev's Inequality with K=3, we can determine that at least 88.89% of the days had temperatures between "F and "F, where "F represents the mean temperature of 76.4°F.

Chebyshev's Inequality provides a lower bound on the proportion of data that falls within a certain number of standard deviations from the mean. In this case, K=3 means that we are considering a range of three standard deviations from the mean.

The inequality states that for any dataset, the proportion of data falling within K standard deviations of the mean is at least 1 - (1/K^2). So, for K=3, we have 1 - (1/3^2) = 1 - (1/9) = 8/9 ≈ 0.8889. Therefore, at least 88.89% of the data falls within three standard deviations of the mean.

In the context of the temperature data, we can conclude that at least 88.89% of the days had temperatures between the mean temperature of 76.4°F minus three standard deviations (76.4 - 3 * 7.3) and the mean temperature plus three standard deviations (76.4 + 3 * 7.3). This range represents a relatively high proportion of the dataset, indicating that the temperature observations are fairly concentrated around the mean with limited extreme values.

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Interactions involving dummy variables can provide insights into the different effects of independent variables across categories.

1. Dummy variables are binary variables that represent categorical variables in a regression analysis. When interactions are included between dummy variables and other independent variables, it allows for differential effects of the independent variables based on the different levels of the categorical variable.

For example, let's consider a regression model to predict income based on education level and gender. We can include an interaction term between education level (represented by dummy variables for different levels) and gender. This interaction term allows us to examine whether the effect of education level on income differs between males and females. It helps capture any gender-specific differences in the relationship between education and income.

1.2 The linear probability model (LPM) is a common approach to estimate the probability of an event occurring using a linear regression framework. However, it has several problems:

1. The predicted probabilities from the LPM can fall outside the [0, 1] range: Since the LPM does not impose any restrictions on the predicted probabilities, they can sometimes exceed the valid probability range. This violates the assumption of probabilities being bounded between 0 and 1.

2. Heteroscedasticity: The LPM assumes constant error variance across the range of the predictors. However, in practice, the variability of the error term may change with different levels of the predictors, resulting in heteroscedasticity. This violates the assumption of homoscedasticity.

3. Non-linearity: The LPM assumes a linear relationship between the predictors and the probability of the event. However, this may not always be the case, and using a linear model can result in misspecification.

To remedy these problems, an alternative to the LPM is to use logistic regression or probit regression models. These models explicitly model the probability of an event occurring and address the issues mentioned above. They provide predicted probabilities that fall within the valid range of 0 to 1, account for heteroscedasticity, and allow for non-linear relationships between the predictors and the probability of the event.

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The cost to play 79 games would be $7.90. The expected money to be received can be calculated by multiplying the probability of winning (which is 1/8) by the reward ($1.00) and then multiplying it by the number of games played (79), resulting in an expected amount of $9.875.

The cost to play a single game is given as $0.10. To calculate the cost to play 79 games, we can multiply the cost per game by the number of games, which gives us $0.10 * 79 = $7.90.

In each game, the probability of getting three heads (HHH) is 1/8, as there are 8 possible outcomes \((2^3)\) and only one outcome results in three heads. The reward for getting three heads is $1.00.

To calculate the expected money to be received, we can multiply the probability of winning (1/8) by the reward ($1.00), which gives us (1/8) * $1.00 = $0.125.

Finally, we multiply the expected value per game ($0.125) by the number of games played (79), resulting in $0.125 * 79 = $9.875. Therefore, the expected amount of money to be received after playing 79 games is $9.875.

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The conclusion results in a correct decision when test of H0: =55 versus H1= 55 is performed using a significance level of the P-value is 0.048

The given null hypothesis is H0: μ = 55 and the alternative hypothesis is H1: μ ≠ 55.

The significance level is not given in the question.

Given P-value is 0.048.

If the true value of μ is 59, and the P-value is 0.048, then we would reject the null hypothesis at a significance level of α = 0.05.

Since the true value

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A

Its pretty easy no cap

What is the first error Vanessa made in her proof: B. Vanessa only established some of the necessary conditions for a congruence criterion.

In Mathematics and Geometry, two triangles are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.

Additionally, the lengths of three (3) pairs of corresponding sides or corresponding side lengths are proportional to the lengths of corresponding altitudes when two (2) triangles are similar.

Based on the reflexive property of equality, we can logically deduce the following congruent and similar triangles:

KM ≅ KM

ΔKLM ≅ ΔMNK  (SSS similarity theorem).

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

Answer:

-2x-11=0

1) Add 11 to both sides

Dividde both sides by - 2

X= _11/2

Drcimal form: - 5.5

The probability of choosing all five white balls correctly from a bowl of 69 white balls and the probability of choosing the correct red ball from a bowl of 29 red balls is \({}^{69}C_5/29\) .

The probability of choosing all five white balls correctly can be calculated using the formula for combinations, where the order does not matter and the balls are chosen without replacement. The probability is given by:

P(Choosing all 5 white balls correctly) = (Number of ways to choose 5 white balls correctly) / (Total number of possible combinations)

The number of ways to choose 5 white balls correctly is 1, as there is only one correct combination.

The total number of possible combinations can be calculated using the formula for combinations, where we choose 5 balls out of 69. It is given by:

Total number of combinations = \({}^{69}C_5\)

Next, we need to calculate the probability of choosing the correct red ball from a bowl of 29 red balls. Since there is only one correct red ball, the probability is 1/29.

Finally, to find the likelihood of being the winner of the Powerball lottery, we multiply the probability of choosing all five white balls correctly by the probability of choosing the correct red ball:

Likelihood = P(Choosing all 5 white balls correctly) * P(Choosing correct red ball)

=\({}^{69}C_5 \times 1/29\\\)

This gives us the probability of being the winner of the Powerball lottery.

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Answer:

2(5x+4)

Step-by-step explanation:

1,024 GB un TB es 1024 GB espero que te ayude esto

They will be 340 miles apart

Here, we want to calculate the distance between these two

We will need a triangular representation of this;

As we have a right triangle, the distance between the two is the hypotenuse

So, we will use Pytahgoras' theorem here;

This states that the square of the hypotenuse equals the sum of the squares of the two other sides

Let us have the distance between the two as D

Answer:

c

Step-by-step explanation:

Answer:

x-axis: (18,0)

y-axis: (0,12)

quadrant 1: (4.5, 10.6)

quadrant 2: (-15, 21)

quadrant 3: (–3/4, –4 1/9)

quadrant 4: (3, –7)

The letter "F" is used to refer to the theory-based standardized statistic for comparing several means. So, correct option is D.

The F-statistic is commonly used in statistical analysis to determine whether the means of two or more groups are significantly different from each other.

The F-statistic is derived from the F-distribution, which is a probability distribution that arises when comparing variances or ratios of variances. In the context of comparing means, the F-statistic is calculated by dividing the variance between groups by the variance within groups.

By comparing the calculated F-statistic to critical values from the F-distribution, we can determine whether there is a significant difference between the means of the groups being compared. If the calculated F-statistic is larger than the critical value, it suggests that there is a significant difference between at least two of the means.

Therefore, when comparing several means and conducting hypothesis tests or analysis of variance (ANOVA), the letter "F" is used to represent the theory-based standardized statistic.

So, correct option is D.

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Answer: Perpendicular lines

Step-by-step explanation:

The first equation (y - 2 = x + 20) represents a line with a positive slope and a y-intercept of 22, while the second equation (y - 2 = -(x + 20)) represents a line with a negative slope and a y-intercept of -18.

The two equations, y - 2 = x + 20 and y - 2 = -(x + 20), represent linear equations in standard form. Let's break down each equation:

y - 2 = x + 20

This equation represents a linear relationship between x and y. It states that the value of y minus 2 is equal to the value of x plus 20. This equation can be rearranged to slope-intercept form (y = mx + b) by isolating y:

y = x + 20 + 2

y = x + 22

The equation y = x + 22 represents a line with a slope of 1 and a y-intercept of 22.

y - 2 = -(x + 20)

Similarly, this equation represents a linear relationship between x and y. It states that the value of y minus 2 is equal to the negative of the value of x plus 20. This equation can also be rearranged to slope-intercept form by isolating y:

y = -(x + 20) + 2

y = -x - 20 + 2

y = -x - 18

The equation y = -x - 18 represents a line with a slope of -1 and a y-intercept of -18.

In summary, the first equation (y - 2 = x + 20) represents a line with a positive slope and a y-intercept of 22, while the second equation (y - 2 = -(x + 20)) represents a line with a negative slope and a y-intercept of -18.

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The volume of the preservative inside the box is 487.83 cm³.

The total volume of the box is calculated by using the following formula as shown below.

V = L x B x W

where;

V = 16 cm  x  8 cm  x  8 cm

V = 1,024 cm³

The total volume of the metal spheres inside the box is calculated as follows;

V = 16 x ( ⁴/₃πr³ )

where;

V = 16 x ( ⁴/₃π(2 cm)³ )

V = 536.17 cm³

The volume of the preservative inside the box = 1,024 cm³ -  536.17 cm³

= 487.83 cm³

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