Which property justifies rewriting 3x - 5x as (3 - 5)x ?

A. Distributive property

B. Commutative property of multiplication

C. Associative property of addition

D. Associative property of multiplication

Step-by-step explanation:

Velocity is a measure of the rate at which an object moves through space. It is a vector quantity, meaning that it has both magnitude (size) and direction. The standard unit for velocity is meters per second (m/s).

Of the quantities listed above, the following represent velocities:

A. 25 m/s: This represents a velocity of 25 m/s, because it gives both the speed (magnitude) and direction of the object's movement.

C. 15 mi/h eastward: This represents a velocity of 15 miles per hour (mi/h) in an eastward direction, because it gives both the speed and direction of the object's movement.

D. 3 mi/h: This represents a velocity of 3 mi/h, because it gives both the speed and direction (implied to be eastward or westward) of the object's movement.

B. 10 km/min: This does not represent a velocity, because it gives the distance traveled (10 km) but not the time over which the distance was traveled. Without the time, it is not possible to determine the speed or rate of movement.

Answer:

f multiplied by 3 divided by 625

Step-by-step explanation:

cant really explain

The shipping and handling price is $174.96

The price of the gold ring = $699.84

Shipping and handling price is 25% of the price of the gold ring.

x% means x/100. So 25 % = 25/100 in ratio.

x% of y can be found by (x/100) x y = xy/100

So, (25/100) x 699.84 = (1/4) x 699.84 = $ 174.96.

So Latrell has to pay an amount of $174.96 for shipping and handling.

Then he total price of ring becomes $699.84 + $ 174.96 = $874.8

Learn more about percentage at https://brainly.com/question/843074

#SPJ4

Linear regression forecasting is an algorithm used for identifying and predicting the future values of a dependent variable based on the independent variable.

The major restriction in linear regression forecasting is that it only takes into account the linear relationship between the dependent and independent variables.

The model assumes that the relationship between the dependent and independent variable is linear and not nonlinear. This assumption may not always be true because there might be cases where the relationship between the variables is non-linear, which can result in inaccuracies in the forecast.

The model's reliability is also based on the quality of the data used for regression analysis. If the data is incorrect, outdated, or incomplete, the accuracy of the model can be negatively affected. Another limitation is that the model assumes that the relationship between the dependent and independent variables is constant over time, which may not be true in the real world.

Also, linear regression is a parametric method that requires certain assumptions about the data, including the normality of the residuals and constant variance of the errors.Linear regression forecasts require data to be independent and unbiased and may not work well if data contains outliers or noise.

Linear regression cannot identify causality or differentiate between correlation and causality. Hence, it is recommended to use linear regression along with other techniques for better accuracy.

To learn more about Linear regression, visit

brainly.com/question/30401933

#SPJ11

Answer:

Step-by-step explanation:

the second one

Answer:

A. x > 23

Step-by-step explanation:

Isolate the variable, x. Treat the > sign like an equal sign, in that what you do to one side, you do to the other. Add 3 to both sides of the equation:

\(x - 3 > 20\\x - 3(+3) > 20 (+3)\\x > 20 + 3\\x > 23\)

\(A) x > 23\) is your answer.

~

Learn more about isolating the variable, here:

https://brainly.com/question/1730064

B) Yes they care because we reject the null hypothesis.

The marketing analyst performed a chi-square test in order to determine if there were differences in the preferences of car colors by women. The null hypothesis states that there is no difference in the proportions of car color preferences among women. By running the chi-square test with the given data, the analyst received a p-value of 0.000, which is less than 0.05, the significant level set at 5%.

This indicates that the differences in proportions of car color preference among women are statistically significant. Therefore, the null hypothesis is rejected and the conclusion is that women do care about the color of their cars.

For more questions like Null hypothesis click the link below:

https://brainly.com/question/14596256

#SPJ4

Answer:

14 im pretty sure

Step-by-step explanation:

.

To calculate the number of hits Courtney must get in her next 50 at-bats to achieve a .300 batting average, we'll need to consider her current stats.

The batting average is determined by dividing the total number of hits by the total number of at-bats. Currently, Courtney has 14 hits out of 50 at-bats, which gives her a batting average of \(14/50 = 0.28\)  or a 28% average. To achieve a .300 batting average, she needs her hits to make up 30% of her total at-bats.

Since Courtney will have 100 at-bats after her next 50, she'll need to have 30 hits to achieve her desired average. To calculate the number of hits needed in her next 50 at-bats, we subtract her current hits from the target hits. Therefore, Courtney needs \(30 hits - 14 hits = 16\) hits in her next 50 at-bats to finish with a .300 average.

To know more about average visit:

https://brainly.com/question/34397603

#SPJ2

Answer:

The Geometric mean of two numbers is the square root of their product.

Given numbers are 12,20.

Geometric mean = √(12*20)

= √240.

= 15.49.

= 15.5.

The geometric mean of 12 and 20 is 4√15.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 3 + 3x + 4y = 7 is an expression.

We have,

The geometric mean of a and b is √(ab).

Now,

a = 12 and b = 20

so,

The geometric mean of 12 and 20.

= √(12 x 20)

= √240

= 4√15

Thus,

The geometric mean of 12 and 20 is 4√15.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Answer: B. The volume of the cylinder is smaller than the volume of the prism.

Step-by-step explanation

Did the test!

The volume of the cylinder is smaller than the volume of the prism.

We have given that,

a. The volume of the cylinder is greater than the volume of the prism

b. The volume of the cylinder is smaller than the volume of the prism.

C. The volume of the cylinder is the same as the volume of the prism

d.You cannot compare the volumes of different shapes

We have to determine the,

the volume of a cylinder with a radius of 3 units and a height of 12 units compared to the volume of a rectangular prism with dimensions 16 units x 16 units x 9 units.

\(v=\pi r^2h\)

The volume of the cylinder is smaller than the volume of the prism.

To learn more about the volume of the cylinder visit:

https://brainly.com/question/14944363

#SPJ5

Answer:

555 minutes

Hope this helps!

Answer:

555 9x60=540

540+15=555 there is your answer

remember that 1/4 of an hour is fifteen minutes

pls mark brainliest

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer: The answer is 4

Step-by-step explanation:
the x is equal to an exponent. Since 3x4 equals 12, and 12+3 equals 15

Step-by-step explanation:

the answer is in the above image

Answer:

61°

Step-by-step explanation:

(x+18)°=(4x-15)°alternate angles, because BC is parallel to AD

x°+18°=4x°-15°

18°+15°=4x°-x°

33°=3x°

33°/3°=3x°/3°

11=x

angle ABD

90°-(x+18)°. the sides of a rectangle meet at 90°

90°-(11+18)°

90°-(29)°

90°-29°

61°

The given statement "In performing a lower-tailed z-test for one mean, the value of the test statistic was z=0.51, which would yield a p-value of 0.695." is true because we perform null hypothesis.

In a lower-tailed z-test for one mean, we test a null hypothesis that the population mean (μ) is greater than or equal to a certain value, against an alternative hypothesis that the population mean is less than that value.

To perform the test, we calculate the z-test statistic using the sample mean, sample standard deviation, sample size, and the hypothesized population mean. If the calculated z-test statistic falls in the rejection region (below the critical value), we reject the null hypothesis and conclude that the population mean is less than the hypothesized value.

In this case, the calculated z-test statistic is 0.51, which falls in the non-rejection region (above the critical value) for a lower-tailed test with a significance level of 0.05. Therefore, the p-value is greater than 0.05, and we do not reject the null hypothesis. The statement that the p-value is 0.695 is consistent with this conclusion.

To know more about z-test here

https://brainly.com/question/14790912

#SPJ4

Answer:

5 - 900

4.5 - 810

3 - 540

2.25 - 405

Step-by-step explanation:

5 x 180 = 900

4.5 x 180 = 810

3 x 180 =540

2.25 x 180 = 405

Answer:

Step-by-step explanation:

Since it's a right angled triangle we can use trigonometric ratios to find the value of x

To find the value of x we can use either sine or cosine

\( \sin(30) = \frac{5}{x} \\ x \sin(30) = 5 \\ x = \frac{5}{ \sin(30) } \\ x = \frac{5}{0.5} \\ \\ \\ \boxed{x = 10}\)

\( \cos(60) = \frac{5}{x} \\ x \cos(60) = 5 \\ x = \frac{5}{ \cos(60) } \\ x = \frac{5}{0.5} \\ \\ \\ \boxed{x = 10}\)

Hope this helps you

The dilation of the rectangle stretches it with regards to the distances from the central point

The option that gives the coordinates of the point D is the option;

D (0, 5)

Reason:

The known parameter;

Coordinates of the center of dilation is M(-3, -4)

Scale factor of dilation = 3

The coordinates of the vertex of the rectangle ABCD are;

A(-2, 2), B(3, 2), C(3, -1), and D(-2, -1)

Length MD = \(\sqrt{(-3 - (-2))^2 + (-4 - (-1))^2} = \sqrt{10}\)

Therefore, length of MD' = 3·√10

Slope of MD, is given as follows;

Therefore, y = 3·x

x² + y² = (3·√10)²

x² + (3·x)² = (3·√10)²

10·x² = 90

x = 3

y = 9

We note that the value of x, and y, are calculated as distance from the central point, M, therefore;

The coordinates of the point D' is (-3 + x, -4 + y)

∴ Coordinates of D' = (-3 + 3, -4 + 9) = (0, 5)

Learn more about dilation of a figure from a point here:

https://brainly.com/question/13625798

To graph y = x² + 4x + 6 with 5+ points using an x/y chart, follow these steps:

Step 1: Create an x/y chart with five rows and two columns. Label the first column x and the second column y.

Step 2: Choose five values for x. You can choose any values you want as long as you plug them into the equation in the next step. In this example, we will use -3, -2, -1, 0, and 1. Write these values in the first column of your chart.

Step 3: Plug each value of x into the equation y = x² + 4x + 6 to find the corresponding value of y. Write these values in the second column of your chart. To make it simpler, here are the calculations for each point:When x = -3: y = (-3)² + 4(-3) + 6 = 3When x = -2: y = (-2)² + 4(-2) + 6 = 2When x = -1: y = (-1)² + 4(-1) + 6 = 1When x = 0: y = (0)² + 4(0) + 6 = 6When x = 1: y = (1)² + 4(1) + 6 = 11

Step 4: Plot each point on the x/y chart. The x value goes on the horizontal axis (x-axis) and the y value goes on the vertical axis (y-axis). Once you have plotted all five points, connect them with a smooth curve to create the graph of y = x² + 4x + 6. The graph is shown in the figure below.

For more questions on: graph

https://brainly.com/question/29538026

#SPJ8

Answer:

a^32

Step-by-step explanation:

Apply law of exponents.

(a^b)^c = a^(bc)

(a^8)^4 = a^(8 × 4)

= a^32

variable

Step-by-step explanation:

Answer:

76.75 is 25% of 307

Step-by-step explanation:

Answer:

76.75

Step-by-step explanation:

do 25% of 307

Hope this helps u :D

Answer:

j = -10

Step-by-step explanation:

Given the mathematical expression;

-10 − 10j = -9j

To find the value of j?

Rearranging the equation, we have;

-10 = -9j + 10j

-10 = j

Therefore, j = -10

The centers of the circles are 15 units apart, if two circles have radii 15 and 95 and if the two external tangents to the circles intersect at 60 degrees.

Let O1 and O2 be the centers of the circles with radii 15 and 95, respectively. Let T1 and T2 be the points of tangency of the external tangent lines with the circles.

Since the tangent lines are external to the circles, we can draw radii perpendicular to the tangent lines from the centers of the circles to the points of tangency. Let T1' and T2' be the points where these radii intersect the tangent lines.

Then, we have:

OT1' = 15

OT2' = 95

T1'T2' = 2*OT1'*cos(60) = OT1'

Note that T1'T2' is equal to the distance between the centers of the circles. Therefore, we have:

Distance between the centers = T1'T2' = OT1' = 15

Hence, the centers of the circles are 15 units apart.

To learn more about circles : https://brainly.com/question/24375372

#SPJ11

Answer:

1. (an closed circle) on the negative 2 mark, then shade everything on the right. (Meaning anything greater than -2, such as -1, 0, 1, 2)

2. (an open circle) on the positive 3 mark, then shade everything right. (Meaning anything greater than 3, such as 4, 5, 6)

Answer:

5+10d=x The dogs he walks are the ind variable and the total money he earns is the dep variable

Step-by-step explanation:

If he earns five dollars a week then that is a confirmed amount which means it’s just $5. Then for every dog he walks that’s $10 so if he walks 0 dogs then he gets $0.

The dogs he walks is ind because this variable is the variable that changes and effects the total whereas, the dep is the total because that’s what changes depending on the ind variable

Answer:

the answer is b B decreases the fastest can I get the brainliest answer

Answer:

Step-by-step explanation:

control group/ first batch

Response variable/ height,texture,and taste

Explanatory variable/ new brand of yeast

The terms with the correct descriptions are;

1. control group/ first batch

2. Response variable/ height,texture,and taste

3. Explanatory variable/ new brand of yeast

An experiment is a technique used to confirm or deny a hypothesis, as well as assess the likelihood or effectiveness of something that has never been tried before. Experiments refers to what happens when a specific factor is modified, which sheds light on cause-and-effect relationships.

We are given that baker is experimenting with a new brand of yeast. He can bakes his first batch of bread using the old brand of yeast that he usually uses and a second batch using the new brand of yeast.

Since baking both batches of bread, he compares the height, texture, and taste of each batch.

The terms with the correct descriptions in the context of this scenario are;

1. control group/ first batch

2. Response variable/ height,texture,and taste

3. Explanatory variable/ new brand of yeast

To learn more about experiments refer to:

brainly.com/question/25303029

#SPJ7

Answer:

The last one is the answer.

Total time for whole journey can be calculated by adding the three parts of the journey which would give answer as 2.5 hours.

What is a fraction?

The components of an entire or group of items are represented by fractions. A fraction consists of two components. The numerator is that the figure at the top of the line. It details the amount of equal portions that were taken from the total or collection. The denominator is that the figure that appears below the line.

Main Body:

total time = 20 minutes + 40 minutes + 1 hour 30 minutes

                = 2.5 hours or 5/2 hours.

Hence total time for journey is 2.5 hours.

to learn more about fraction click on the link below.

https://brainly.com/question/17220365

#SPJ4