PLEASE HELP

Write and simplify a polynomial expression to find the area of 4 circles. Each circle has a radius of (4a-6)

Answer:

Step-by-step explanation:

1)  $5 + (8 min - 3 min)($1/min) = $5 + $5 = $10

2) $7.50 + (30 km - 4 km)($1.25/km) = $7.50 + $32.50 = $40

3) $100 + (24 hr - 3 hr)($35/hr) = $100 + $735 = $835

The simplified expression is −5x³y − 2x²y + 12y.

The given expression is (4x³y − 5x²y + 6y) − (9x³y − 3x²y − 6y). To simplify this expression, we need to distribute the negative sign inside the second set of parentheses and then combine like terms.

Distributing the negative sign inside the second set of parentheses, we get:

(4x³y − 5x²y + 6y) − 9x³y + 3x²y + 6y

Next, we can group the terms that have the same variables and exponents:

4x³y − 9x³y = −5x³y −5x²y + 3x²y = −2x²y 6y + 6y = 12y

Finally, we can combine the like terms to obtain the simplified expression:

−5x³y − 2x²y + 12y

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Answer:

B:−5x3y − 2x2y + 12y

Step-by-step explanation:

i took the test and got it right

The given equation is 7(x+4) = -21 . Therefore, the value of x is 7

In mathematics, an equation is a formula that connects two expressions with the equal sign = to indicate that they are equal. An equation is made up of two expressions joined by an equal sign ("="). Expressions for both sides of the equals sign are called the "left side" and the "right side" of the equation. Many times the right side of the equation is assumed to be zero. Assuming this does not reduce generality, this can be achieved by subtracting the right side from both sides.

According to the Question:

The given equation is:

   7(x+4)= -21

⇒ 7x + 28 = -21

⇒ 7x = -49

⇒ x = 7

Complete Question:

Solve the Equation : 7(x+4)= -21

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Answer:

Point I and Point II may not need to be main points.

Ann's main points are not balanced.

Parallel structure will not work with Ann's speech topic.

Step-by-step explanation:

This division indicates that Ann prioritized Point III above Points I and II. Point III was allocated the most of Ann's time (75%), while Point I and II were each given 10% and 15%, respectively. This is a sign that Ann placed a higher priority on Point III.

In terms of the actual percentages, this could indicate a variety of things. It could mean that Ann felt Point III was more important than the other two points, or that Point III took more time to complete than the other two points. It could also mean that Ann was trying to achieve a specific ratio of her time dedicated to each point.
Regardless of the reasoning, this division of Ann's time shows that she placed a higher priority on Point III. This could mean that Point III was more important to her overall goal than the other two points, or that Point III required a larger amount of her time.

By understanding this division of Ann's time, we can gain insight into what she felt was important, and how she chose to prioritize her time. This can be used to better understand Ann's thought process and her overall goal.

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Therefore, the average velocity of the person over the interval 0 ≤ t ≤ 12 can be calculated as follows:Average Velocity = Total distance travelled / Total time taken= 6.6 / 12= 0.55 m/s.

In the given question, we need to find the average velocity of a person running in a straight line across a field, given differentiable function v(t) on the interval [0,12]. Therefore, to calculate the average velocity of a person, we use the following formula:Average Velocity = Total distance travelled / Total time takenWe have a graph with the velocity of the person, which is a differentiable function v(t) given above on the interval 0 ≤ t ≤ 12.

We need to find the distance travelled by the person. Therefore, we use the following formula:Distance travelled = ∫v(t)dt From the given graph, the velocity of the person is zero when t = 0 and when t = 5. Similarly, the velocity of the person is 0 when t = 10 and when t = 12.So, we have to calculate the distance travelled from 0 to 5, from 5 to 10, and from 10 to 12 to determine the total distance travelled by the person over the given interval .Distance travelled from 0 to 5 can be calculated as follows :

Distance travelled from 0 to 5 = ∫v(t)dt from [tex]0 to 5= 5 x 0.6 = 3[/tex]Distance travelled from 5 to 10 can be calculated as follows :Distance travelled from 5 to 10 = [tex]∫v(t)dt[/tex] from [tex]5 to 10= 5 x 0.4 = 2[/tex]

Distance travelled from 10 to 12 can be calculated as follows: Distance travelled from 10 to 12 = ∫v(t)dt from 10 to 12= 2 x 0.8 = 1.6Total distance travelled = Distance travelled from 0 to 5 + Distance travelled from 5 to 10 + Distance travelled from 10 to [tex]12= 3 + 2 + 1.6= 6.6[/tex]

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Answer:

14x^2 + 2y

Step-by-step explanation:

We are given two expressions as the side lengths of a rectangle we must find the perimeter.

The formula for perimeter of a rectangle is [tex]P=l+l+w+w[/tex]. Judging by this, we will have add up all the sides of the rectangle. Lets start by adding the two length expressions first.

[tex](x+10y)+(x+10y)[/tex]

Add x terms

[tex]2x[/tex]

Add y terms

[tex]2x+20y[/tex].

Now lets add the width terms

[tex](7x^2 - x - 9y) + (7x^2 - x - 9y)[/tex]

Add x squared terms

[tex]14x^2[/tex]

Add x terms

[tex]14x^2-2x[/tex]

Add y terms

[tex]14x^2-2x-18y[/tex]

Now we need to add both of the two expressions together

[tex](14x^2-2x-18y)+(2x+20y)[/tex]

We can bring down our x squared term since we have no like terms

[tex]14x^2[/tex]

Add x terms, which cancel.

[tex]14x^2+0[/tex]

Add y terms

[tex]14x^2 +2y[/tex]

The perimeter of the rectangle is 14x^2 + 2y

Answer: 3623.75

Step-by-step explanation:

Answer:

B. 4.4×10^9

Step-by-step explanation:

8.8×10^6×5×10^2

=8.8×5×10^(6+2)

=44×10^8

=4.4×10^9 is the answer

Samantha would fill in the following information on the survey sheet based on the data provided:

Sex: Female

Age: 13-14

How much pressure do you feel to achieve at school? c. A lot

Samantha, a 14-year-old girl, would complete the survey slip by selecting "Female" under "Sex," "13-14" under "Age," and "A lot" under "How much pressure do you feel to achieve at school?"

This indicates that Samantha is feeling a significant amount of pressure to succeed academically. It's common for high school students to feel pressure to perform well in school, and this can be due to various factors such as parental expectations, college aspirations, or personal goals.

As a school counselor, it's essential to understand the level of pressure students are experiencing to provide appropriate support and guidance. Identifying and addressing the sources of pressure can help students like Samantha better manage stress and achieve academic success.

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The question is -

A school counselor conducted a survey among a group of high school students using the following survey slip:

Survey (please tick the correct boxes)

Sex:  Male  Female

Age:  13-14  15 -16  17–18

How much pressure do you feel to achieve at school?

a. None b. A little c. A lot  And d. the unbearable amount

Show, by completing the survey slip on the answer sheet, how Samantha – a 14-year-old girl who feels a lot of pressure to achieve at school – would complete the survey

Answer: Plot 2

Step-by-step explanation:

The height of the trapezium is 5mm, given that the two parallel sides have lengths of 6mm and 8mm, and the area of the trapezium is 35mm².

To find the height of a trapezium given its area and the lengths of its parallel sides, we use the formula:

Area = (a + b) * h / 2

where a and b are the lengths of the parallel sides, h is the height, and Area is the area of the trapezium.

In this case, we are given that the area of the trapezium is 35mm², and we know that the two parallel sides have lengths 6mm and 8mm. So, we can substitute these values into the formula and solve for h:

35 = (6+8) x h/2

Simplifying the right-hand side of the equation, we can combine the two lengths of the parallel sides and multiply by h, and then divide by 2 to get:

35 = 14h / 2

Multiplying both sides by 2, we get:

70 = 14h

Dividing both sides by 14, we get:

h = 5

Therefore, the height of the trapezium is 5mm.

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The answer is yes, we have all the information needed to solve for how many licenses each central office department will get.

If this very individual acquired about 250 program licenses and 50 licenses are taken or conveyed to departments in the satellite office of same organization, then, number of licenses which will be moved to the central office is:

= 250 - 50

= 200 licenses.

This conclude that 200 licenses will be moved to the central office while 50 licenses will be kept or used at the satellite office.

Then, as given if there are 10 company's departments in central office of this organization and all that 250 licenses will be evenly or equally distributed among the departments, each department will get:

200/10

= 20 licenses.

Since dividing 200 by 10 does give a perfect integer, then there's no further information we are yet to be furnished with. One department will  get 10 license.

Therefore, we have all the information we need to solve for how many licenses each central office department will get.

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Answer:

C and E

Step-by-step explanation: C represents a nonlinear relationship because a nonlinear relationship is a relationship that does not have a straight line. E is a nonlinear relationship because it does not have a straight line. Hope this helps!! :))

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The height of the partially finished brick wall was 2.9 meters.

Let's denote the height of the partially finished brick wall as x meters. Mark stacked 1.2 meters of bricks onto the wall, which made the final height of the wall 4.1 meters.

Here's the equation to represent the situation:

x + 1.2 = 4.1

To solve this equation, subtract 1.2 from both sides:

x = 4.1 - 1.2

x = 2.9

So, the height of the partially finished brick wall was 2.9 meters.

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Answer:

x < 2

Step-by-step explanation:

57x - 32 < 72

57x < 104

x < 2

A large bag contains marbles of different colors. there are 10 red marbles, 5 blue marbles and 7 yellow marbles. when selecting 3 marbles without replacement, the probability of selecting 3 red marbles is 1/54.

The probability of selecting 3 red marbles is 1/54.What is a probability?

Probability refers to the likelihood or chance of an occurrence. The probability of an event occurring is the ratio of the number of favourable outcomes to the total number of possible outcomes.

A fraction or a decimal is used to express it.The total number of marbles in the bag is 10 + 5 + 7 = 22 marbles.

There are ten red marbles in the large bag, so the number of ways to select 3 red marbles from ten red marbles is:

[tex]10C_3 = (10 \times 9 \times 8) / (3 \times 2 \times 1) = 120[/tex]

There are 22 marbles in the bag, therefore, the total number of ways to pick 3 marbles from 22 is:

[tex]22C_3 = (22 \times 21 \times 20) / (3 \times 2 \times 1) = 1540[/tex]

Hence, the probability of choosing 3 red marbles out of the 22 marbles in the bag without replacement is:120/1540 = 1/54

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Answer:

Step-by-step explanation:

Not sure.

Answer: 9 cm

Step-by-step explanation: 4+5=9

According to the information, the distance between Daytona beach and Orlando would be 52 miles.

To calculate the distance from Daytona beach to Orlando we must perform the following rule of three mathematical procedure:

1. In this case, we must consider the procedure like this:

If one unit is equal to 26 miles, how many miles are 2 units equal to?

So, we can conclude that the distance between Orlando and Baytona beach is 52 miles.

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Answer:

a. Runner A ran at a constant rate throughout the race.

b. Runner B stopped running between 20 and 30 seconds.

c. Runner C started off slow and gradually increased speed until reaching their maximum speed, then gradually slowed down towards the end of the race.

d. Runner A won the race because they crossed the finish line first, at 40 seconds, which is before runners B and C.

The optimal solution would be to use $240 worth of professional grade material for each frame.

An optimal solution is a solution that provides the best possible outcome for a problem or situation, given a set of constraints or requirements. In mathematical optimization, an optimal solution is the solution that maximizes or minimizes an objective function while satisfying a set of constraints.

In other words, an optimal solution is the solution that is most efficient, effective, or desirable according to a certain set of criteria. It is the solution that achieves the best possible outcome, given the available resources and limitations.

To find the optimal solution, we need more information about the specific weight specification and the cost of different types of materials.

However, if we assume that there is only one type of material available, and that it costs $x per yard, we can set up an equation to find the optimal solution:

30x = cost per frame

If the professional grade material costs $8 per yard, then the equation becomes:

30(8) = $240 per frame

So, the optimal solution would be to use $240 worth of professional grade material for each frame, assuming that it meets the weight specification. If the weight specification requires a different amount of material, or if there are other materials available at different prices, the optimal solution would be different.

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False to say that "cos(0) = 0." Cos(0) is equal to 1, as the input yields the x-coordinate of the spot on the circle for each arc in right spot, where first side coincides positive x-axis or final side spins clockwise first side.

What does it mean to coincide?

occupying the same location in time or space; coinciding; taking up the same spots on a scale. 3. Exactly concur.

Nevertheless, if the query is changed to ask for the angle that measures between 0 & 2 radians for which cos(x) = 0, the response is:

When x is equal to 2 or 3, cos(x) equals 0. The unit circle's corresponding points at these angles are, respectively, (0, 1) and (0, -1).

b. The sin(x) values for these angle measurements are:

As the equivalent point is at (0, 1) just on unit circle, sin(/2) equals 1.Due to (0, -1) being the corresponding point on the unit circle, sin(3/2) = -1.

therefore, False to say that "cos(0) = 0." Cos(0) is equal to 1, as the input yields the x-coordinate of the spot on the circle for each arc in right spot, where first side coincides positive x-axis or final side spins clockwise first side.

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A pyramid with a base having n sides will have n + 1 faces, excluding the base. So, the pyramid that shares the same base as the prism will have 16 + 1 = 17 faces.

Let's say the base of the pyramid is a polygon with n sides. There are n faces in the pyramid (excluding the base), each of which is a triangle. Since there is just one base, the number of faces in the pyramid is n + 1.A prism is a polyhedron that is formed when two congruent polygons are joined by parallelograms. As a result, a prism with a polygon base has two polygons as bases and a number of rectangular faces equal to the number of sides of the polygon, which in this scenario is n.There are 2 bases and n rectangular faces in total for the prism. Since the number of edges in the prism is 99, we may express this as:Edges in prism = (Number of edges in each rectangular face × Number of rectangular faces) + (Number of edges in each base × Number of bases)= [tex]4n + 2n = 6n = 99n = 16.5[/tex] faces are in the pyramid = 16 + 1 = 17 faces.

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The unit used to measure the vertical height of a letterform from the bottom of the descender to the top of the ascender is the x-height. The correct answer to the question is option c) x-height.

The x-height is the height of the lowercase letters in a font, typically excluding ascenders and descenders. It is a crucial factor in typography because it affects the legibility and overall appearance of the text.

The x-height is measured in points, which is a unit of measurement commonly used in typography and printing. One point is equivalent to 1/72 of an inch, and it is abbreviated as "pt".

Therefore, the correct answer to the question is option c) x-height. Typography plays an essential role in graphic design, advertising, and branding, and understanding the measurement units used in typography is crucial for producing effective designs.

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The method of documentation that describes the setting up of squares of known dimension over the entire pattern is known as grid method.

Grid method is a method of documentation that involves the setting up of squares of known dimensions over the entire pattern to document a site. This method is commonly used in archaeological surveys and historical preservation.

Therefore, grid method is a simple and effective way of recording data, and it is still widely used in the field of archaeology today.

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Answer: 1250 miles

Step-by-step explanation:

50 miles in 1/5 of an hour = 250 miles in 1 hour = 1250 miles in 5 hours

Answer:

1,250

Step-by-step explanation:

50 divided by 1/5 equals 250.

Multiply 250 by 5.

250*5= 1,250

The two solutions to the equation (2x - 3)(3x + 5) = 0 when solved are x = 3/2 and x = -5/3

Given that, we have the following equation

(2x - 3)(3x + 5) = 0

The above equation means that

2x - 3 = 0 and 3x + 5 = 0

When the equations are evaluated, the equations becoms

2x = 3 and 3x = -5

Lastly, we divide both sides of the equation by the coefficent of x i.e 2 and 3

So, we have

x = 3/2 and x = -5/3

So, the values of the solutions to the equation are x = 3/2 and x = -5/3

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a. No, w is not in fv1; v2; v3g. There are three vectors in fv1; v2; v3g.

b. There are three vectors in the span of fv1; v2; v3g.

c. No, w is not in the subspace spanned by fv1; v2; v3g. This is because the subspace is the set of all linear combinations of the vectors in the span, and w does not have to be a linear combination of the vectors in the span.

To prove this, we first need to recall the definition of the span: it is the set of all linear combinations of a set of vectors. A linear combination is a sum of the vectors, multiplied by constants. For example, if we have a vector v1, and two constants a and b, then the linear combination of a*v1 and b*v1 is (a + b)*v1. If a vector w is not a linear combination of v1, then w is not in the span of v1.

The same logic applies to the vectors fv1; v2; v3g. If w is not a linear combination of these three vectors, then w is not in the subspace spanned by these three vectors. We can prove this by showing that w cannot be a linear combination of fv1; v2; v3g. This is because the only way to create a linear combination of these vectors is to multiply them by constants, and since w is not one of the vectors, it cannot be multiplied by a constant. Therefore, w is not in the subspace spanned by fv1; v2; v3g.

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In this study on road rage, a random sample of 596 men and 523 women were surveyed about their driving behavior.

Based on their responses, each individual was assigned a road rage score on a scale of .

The road rage score scale should be selected according to the researcher's preference, and it should be explained.The researcher should clarify how the data was collected in order to improve the study's transparency and reliability.

ll of these aspects should be explained to make the research findings more reliable.The study's results should be presented in tabular or graphical format to better comprehend the data.

The researcher can use bar charts, pie charts, or histograms, among other things. The researcher should also utilize statistical tools such as mean, median, and mode to present the data's central tendency.

Based on the road rage score results, the study's conclusions and implications should be drawn.

The researcher should emphasize the gender-based findings of the study and discuss whether there is a difference between male and female road rage. Furthermore, the study should propose measures to reduce road rage among motorists.

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