Which equation is equivalent to the formula d = rt? r equals d over t r = dt t equals r over d t = dr

Answer:

The complete factorization of x2 + 8x – 48 is (x+4)(x−12)

which woud make the answer A. (x – 6)

Step-by-step explanation:

May I have brainliest please? :)

Their experimental design was Independent variable was contact plates placed on the tile for less than 5 seconds. Option D is the correct answer.

The independent variable is the factor that is being manipulated by the experimenter. In this case, the experimenter is manipulating the length of time the plates are on the tiles. The dependent variable is the factor that is being measured by the experimenter. In this case, the experimenter is measuring the amount of bacteria on the plates.

The control is a group of subjects that are not exposed to the independent variable. In this case, the control group is the floor tiles that have been inoculated with chicken broth. The control group is used to compare the results of the experimental group, which is the group of plates that have been dropped on the tiles.

The standardized variables are the factors that are kept the same for both the experimental group and the control group. In this case, the standardized variables are the type of food, the surface of the tiles, and the temperature of the room. These factors are kept the same so that the only difference between the two groups is the length of time the plates are on the tiles.

This experimental design is a well-controlled experiment because the experimenter has taken steps to ensure that the only difference between the two groups is the length of time the plates are on the tiles. This will allow the experimenter to make accurate conclusions about the effect of the independent variable on the dependent variable. Option D is the correct answer.

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The following question may be like this:

The Myth busters conducted an experiment to test the five second rule. Which of the following represented their experimental design?

In summary, a standard score tells us how many standard deviations a measurement is from the mean, while an unbiased sample statistic is one whose expected value is equal to the population parameter it is estimating.

In statistics, a standard score or z-score is a variable that shows how many standard deviations above or below the mean a measurement is. The formula for calculating z-scores is given as:

Z = (X - μ) / σ

where X is the observed value, μ is the population mean, and σ is the population standard deviation. A z-score can be positive or negative, depending on whether the observation is above or below the mean, respectively. A z-score of zero means that the observation is exactly at the mean.

This means that on average, the sample mean will be equal to the population mean, even though it may vary from sample to sample. In summary, a standard score tells us how many standard deviations a measurement is from the mean, while an unbiased sample statistic is one whose expected value is equal to the population parameter it is estimating.

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By simple algebra, Jane is 57 9/20 inches taller.

If one object or person's height exceeds that of another, the taller object or person is said to exist. There is a two-object or two-person limit. Taller is a relative term. For instance: Hoppy stands at 7 feet.

You can begin this issue by first figuring out Dwight's height. At 54 3/4 inches, he would be 1 1/2 inches taller than Chloe:

54 3/4 plus 1 1/2 equals 55 + (3/4 + 1/2) equals 55 + (3/4 + 2/4) equals 55 + 5/4 equals 56 1/4 inches.

Dwight stands at 56 1/4 inches.

Dwight is 1 1/5 inches shorter than Jane, so

56 1/4 plus 1 1/5 is 57 plus (1/4 plus 1/5) is 57 plus (5/20 plus 4/20) is 57 plus 9/20 is 57 9/20 inches.

Jane stands at 57 9/20 inches.

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Answer:

$3

Step-by-step explanation:

8% of $25 is $2. $25 + $2 is $27. $30 - $27 is $3.

Answer:

3/7

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

Answer: D

Step-by-step explanation:

just got it correct.

Answer:

5.4

Step-by-step explanation:

there

Answer:

Step-by-step explanation:

y = -1                       *Then put in the x accordingly

2x + 6y = 2                         2(4) + -6 = 2    

2x + 6(-1) = 2                         8 + -6 = 2

2x + -6 = 2                               2 = 2✅

      +6     +6

2x = 8

/2    /2

x = 4    

y = -1

(4, -1)

Answer:

The acceleration of the car will be 400 m/s².

Step-by-step explanation:

The acceleration of the car can be found using Newton second law:

\( F = ma \)

Where:

F: is the net force = 200 N

m: is the mass = 500 g

a: is the acceleration =?

Then, the acceleration will be:

\( a = \frac{F}{m} = \frac{200 N}{500 g*\frac{1 kg}{1000 g}} = 400 m/s^{2} \)  

Therefore, the acceleration of the car will be 400 m/s².

I hope it helps you!

Answer:

8.5

Step-by-step explanation:

58.65/6.9= 8.5

Answer:

Step-by-step explanation:

To find the dimensions of a parallelogram, you need to know the length of its base and the perpendicular distance from the base to the opposite side, which is also called the height or altitude of the parallelogram.

A quadrilateral (a four-sided polygon) with two pairs of parallel sides is referred to as a parallelogram. This means that the opposite sides of the parallelogram are parallel and have the same length, while the adjacent sides are unequal in length.

The properties of a parallelogram include:

The opposing sides seem to be congruent and parallel (equal in length)

Congruent opposite angles (equal in measure)

The angle adjacent to each other are supplementary (their sum is 180 degrees)

Diagonals bisect each other (the diagonals divide each other into two equal parts)

If you have the measurements of the sides and angles of the parallelogram, you can use trigonometry and geometry to find the length of the base and the height. For example, if you have the lengths of two adjacent sides and the angle between them, you can use the sine function to find the height. The base can be found by using the formula for the area of a parallelogram, which is base times height.

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Answer:

0.7

Step-by-step explanation:

Answer:(-6,30)

Step-by-step explanation:

x=-6

y=30

Answer: (-6,30)

Step-by-step explanation:

-5x=-x+24

+x=+x

-4x=24

÷-4=÷-4

X=-6

Y=-5x

Y=-5(-6)

Y=30

(-6,30)

Answer:

Step-by-step explanation:

60+20=80

Answer:

Step-by-step explanation:

sorry but i,m not sure

It takes Ms. Haas 3n + 8 minutes to complete one lap more than Mr. Wilkerson, where n is a whole number.

What is the equivalent expression?

Equivalent expressions are expressions that perform the same function despite their appearance. If two algebraic expressions are equivalent, they have the same value when we use the same variable value.

We know that the difference in the time taken by Ms. Haas and Mr. Wilkerson to complete one lap is 5 - 8 = -3 minutes. This means that Mr. Wilkerson is slower and takes more time to complete one lap than Ms. Haas.

Let's assume that Ms. Haas and Mr. Wilkerson start together at the starting point. When Ms. Haas completes one lap, she is one lap ahead of Mr. Wilkerson.

Let's find out the time it takes for Ms. Haas to complete one lap and Mr. Wilkerson to complete (n + 1) laps, where n is the number of laps Mr. Wilkerson completes before Ms. Haas completes one lap.

Ms. Haas takes 5 minutes to complete one lap. Therefore, she takes 5n minutes to complete n laps.

Mr. Wilkerson takes 8 minutes to complete one lap. Therefore, he takes 8(n + 1) minutes to complete (n + 1) laps.

We want to find the value of n for which Ms. Haas is exactly one lap ahead of Mr. Wilkerson. This means that the distance covered by Ms. Haas should be one lap more than the distance covered by Mr. Wilkerson.

The distance covered by Ms. Haas in n laps is n laps.

The distance covered by Mr. Wilkerson in (n + 1) laps is (n + 1) laps.

Equating the two distances, we get:

n = n + 1 - 1

n = n

This means that the value of n can be anything. Therefore, Ms. Haas will be exactly one lap ahead of Mr. Wilkerson after any whole number of laps.

Let's find out how much time it takes for Ms. Haas to complete one lap more than Mr. Wilkerson.

When Ms. Haas completes one lap, Mr. Wilkerson completes (n + 1) laps.

The time taken by Ms. Haas to complete one lap is 5 minutes.

The time taken by Mr. Wilkerson to complete (n + 1) laps is 8(n + 1) minutes.

We want to find the value of n for which Ms. Haas completes one lap more than Mr. Wilkerson. This means that the time taken by Ms. Haas should be 8(n + 1) + 5 minutes.

8(n + 1) + 5 = 5(n + 1) + t

8n + 13 = 5n + 5 + t

3n + 8 = t

Therefore, it takes Ms. Haas 3n + 8 minutes to complete one lap more than Mr. Wilkerson, where n is a whole number.

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The price of the Motorcycle, not including the tax, is $11,500

The price of the motorcycle before the tax, we need to subtract the tax amount from the total price, including the tax. Let's denote the price of the motorcycle before tax as P.

Given:

Tax rate = 12.5%

Tax amount = $1437.50

We know that the tax amount is equal to 12.5% of the price of the motorcycle:

Tax amount = 0.125 * P

We can set up the equation and solve for P:

0.125 * P = $1437.50

To isolate P, divide both sides of the equation by 0.125:

P = $1437.50 / 0.125

Performing the calculation:

P = $11,500

Therefore, the price of the motorcycle, not including the tax, is $11,500.

Tax amount = 0.125 * $11,500 = $1437.50

The tax amount matches the given information, confirming that the price of the motorcycle before tax is indeed $11,500.

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The question presents the five assumptions for multiple linear regression (MLR). Each assumption plays a crucial role in ensuring the validity of the regression analysis. Here is a summary of the assumptions:

MLR.1: Linear model - The relationship between the dependent variable (Y) and the independent variables (X₁, X₂, ..., Xk) is assumed to be linear. The equation represents the linear regression model, where the coefficients (β₀, β₁, ..., βk) represent the effects of the independent variables on the dependent variable.

MLR.2: No perfect multicollinearity - There should be no perfect linear relationship among the independent variables (X₁, X₂, ..., Xk). This assumption ensures that the independent variables provide unique and distinct information in the regression model.

MLR.3: Random sampling - The observations used in the regression analysis are assumed to be obtained through a random sampling process. This assumption ensures that the sample accurately represents the population and allows for generalization of the results.

MLR.4: Zero conditional mean - The expected value of the error term (ε) is assumed to be zero given the values of the independent variables. This assumption implies that the independent variables are not systematically related to the error term.

MLR.5: No outliers - There are no influential or extreme observations that significantly impact the regression results. Outliers can have a substantial effect on the regression model, leading to biased estimates.

Each assumption in multiple linear regression is important for different reasons. MLR.1 assumes a linear relationship between the dependent variable and independent variables, allowing for a straightforward interpretation of the regression coefficients. MLR.2 ensures that the independent variables are not redundant or perfectly correlated, avoiding multicollinearity issues that can affect coefficient estimation.

MLR.3 assumes that the observations are randomly selected, allowing for generalizability of the regression results to the population. MLR.4 implies that the independent variables are not systematically related to the error term, which is essential for unbiased estimation. MLR.5 assumes the absence of influential outliers that could distort the regression results and compromise the model's predictive accuracy. By satisfying these assumptions, the multiple linear regression model becomes a reliable tool for analyzing the relationships between variables and making predictions.

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Answer:

One solution.

Step-by-step explanation:

This question has different coefficients so it has one solution.

#3.

k (constant of proportionality) = y/x

We choose two points of the graph randomly, as follows:

(2, 30); (4, 60)

Now we use the formula on both relationships and compare:

k = 30/2 k = 60/4

k = 15 k = 15

k = 15

Answer:

7b+3r

Step-by-step explanation:

Combine all like terms

Answer:

11200

Step-by-step explanation:

is that right

In a family with five girls and the probability of a boy being born is 1/2, the probability of the next child being a boy is still 1/2.

The previous births do not affect the probability of the next birth since each birth is an independent event.

The probability of an event occurring is determined by the ratio of the number of favorable outcomes to the total number of possible outcomes. In this case, the event of interest is the birth of a boy.

Since each birth is an independent event, the probability of having a boy on any given birth is always 1/2, regardless of the previous children born.

In the given scenario, the family already has five girls. This information is not relevant to the probability of the next child being a boy. The gender of the previous children does not affect the probability of the next child being a boy or a girl.

Therefore, the probability of the next child being a boy remains 1/2, as it is for any independent birth event.

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Answer: -2a,-2b

Step-by-step explanation:

Answer:

1. 0.6p

Step-by-step explanation: Well its quite obvious since its 40%

Answer:

18.62

Step-by-step explanation:

Answer:

18 whole gallons

Step-by-step explanation:

65 divided by 3.49=18.6246418= 18 whole gallons

Hope I helped!! :)

Brainliest?!?!

Stay safe and have a good day/night/afternoon!!!

Answer:

x=\(-\frac{1+2i\sqrt{31} }{5}\)

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

−25=  \(\frac{1}{2}\)  (10x−2)+3x

−25=(\(\frac{1}{2}\))(10x)+( \(\frac{1}{2}\) )(−2)+3x(Distribute)

−25=5x+−1+3x

−25=(5x+3x)+(−1)(Combine Like Terms)

−25=8x+−1

−25=8x−1

Step 2: Flip the equation.

8x−1=−25

Step 3: Add 1 to both sides.

8x−1+1=−25+1

8x=−24

Step 4: Divide both sides by 8.

8x  ÷ 8   =   −24  ÷ 8

Answer:

(0, - 5 ) and (2, - 1 )

Step-by-step explanation:

Given the 2 equations

y = 2x - 5 → (1)

y = x² - 5 → (2)

Substitute y = x² - 5 into (1)

x² - 5 = 2x - 5 ( subtract 2x - 5 from both sides )

x² - 2x = 0 ← factor out x from each term

x(x - 2) = 0

Equate each factor to zero and solve for x

x = 0

x - 2 = 0 ⇒ x = 2

Substitute these values into (1) for corresponding values of y

x = 0 : y = 2(0) - 5 = 0 - 5 = - 5 ⇒ (0, - 5 )

x = 2 : y = 2(2) - 5 = 4 - 5 = - 1 ⇒ (2, - 1 )

Answer:

y=2x-5 ......... 1

y = x² - 5 ......... 2

Substitute equation 1 into equation 2

You'll get

2x - 5 = x ² - 5

x² - 2x = -5 + 5

x² - 2x = 0

Factorize

x ( x - 2 ) = 0

x = 0 x = 2

Now put the values of x into any of the equation

When x = 0

y = 2(0) - 5

y = 5

When x = 2

y = 2(2) - 5

y = 4 - 5

y = -1

When x = 0 y = - 5

When x = 2 y = - 1

Hope this helps

Answer:

Option (1)

Step-by-step explanation:

Given triangle ABC shows the length of side AB = 3 units

Measure of angle A = 66°

Measure of angle C = 38°

By applying Sine rule in the given triangle,

\(\frac{\text{Sin}A}{BC}=\frac{\text{Sin}B}{AC}=\frac{\text{Sin}C}{AB}\)

Or \(\frac{\text{Sin}A}{a}=\frac{\text{Sin}B}{b}=\frac{\text{Sin}C}{c}\)

By substituting the given measures,

\(\frac{\text{Sin}A}{BC}=\frac{\text{Sin}C}{c}\)

\(\frac{\text{Sin}66}{BC}=\frac{\text{Sin}38}{3}\)

BC = \(\frac{3\times \text{Sin}66}{\text{Sin}38}\)

Therefore, Option (1) will be the answer.

Answer:

its A

Step-by-step explanation:

it's the answer