if you double the length and width of a rectangle, how much does area of the rectangle change?

Answer:

Point form:

(4,-1)

x=4,y=-1

Step-by-step explanation:

Graph:

Answer:

x = 4 , y = -1

Step-by-step explanation:

Note that both equations equal y. Set the two equations equal to each other.

x - 5 = y = -x + 3

x - 5 = -x + 3

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other.

First, add x and 5 to both sides of the equations:

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

x + x = 3 + 5

2x = 8

Next, divide 2 from both sides of the equation:

(2x)/2 = (8)/2

x = 8/2

x = 4

Plug in 4 for x in the given equations and solve:

y = x - 5

y = (4) - 5

y = -1

y = -x + 3

y = -(4) + 3

y = -1

x = 4 , y = -1 are your answers.

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Answer:

48.2 meter

Step-by-step explanation:

Make me brainliest please

Answer:

w=31, L=34

Step-by-step explanation:

x+x+(x+3)+(x+3)=130

4x+6=130

4x=124

x= 31

width = 31, length = 34 bc it is 3 cm longer

The length and width of the rectangle are 34 cm and 31 cm.

Given,

A wire 130 cm long is bent into the shape of a rectangle which is 3 cm longer than it is wide.

Find the width and length of the rectangle.

It is given by:

Perimeter = 2 ( length + width )

Area = Length x Width

Find the length of the rectangle.

Length = Width + 3 ______(1)

Since a wire of 130 cm is bent into the shape of a rectangle.

The perimeter of the rectangle = 130 cm

We have,

Perimeter = 2 ( length + width )

130 cm = 2 ( width + 3 + width )

65 = 2width + 3

65 - 3 = 2width

2width = 62

Width = 62 / 2 = 31

Putting Width = 31 in (1)

Length = Width + 3 = 31 + 3 = 34

Thus the length and width of the rectangle are 34 cm and 31 cm.

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Answer:

The y - intercept is -2, the slope is (-1 , -1) so it would be

y = -1x -2

After six​ months, the​ subjects' symptoms are studied and compared. Answer parts​ are given below.

An assumption or concept is given as a hypothesis for the purpose of debating it and testing if it might be true.

Given:

A pharmaceutical company wants to test the effectiveness of a new allergy drug.

The company identifies 250 females​ 30–35 years old who suffer from severe allergies.

The subjects are randomly assigned into two groups.

One group is given the new allergy drug and the other is given a placebo that looks exactly like the new allergy drug.

After six​ months, the​ subjects' symptoms are studied and compared.

Here, 30-35 year-old girls are used to test the new allergy medication's effects.

(a)

Females between the ages of 30 and 35 who are the test subjects are the experimental units.

The new allergy medication, whose results are being studied, is the remedy.

It's best to choose C.

(b)

A bias may develop if a researcher or patient knows whether subjects received a medication or a placebo.

In this case, choice B is preferable.

(c)

If neither the researcher nor the subject knew whether they were receiving a medicine or a placebo, the study would be considered double-blind.

In this case, choice A is preferable.

Therefore, all the correct choices are given above.

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The complete question is given in the image.

Answer:

x ≈ -44.63

Step-by-step explanation:

-3.5x - 30 + 1.3x = 68.19

-2.2x = 98.19

No, the assertion made by your buddy is false. It is impossible to utilize the parallelogram opposite sides theorem (Thm. 7.3) to demonstrate itself. You must employ known facts and theorems rather than the theorem you are attempting to show in order to prove a theorem.

If your buddy is utilizing the SSS congruence theorem (Thm. 5.8) and the parallelogram opposite sides theorem (Thm. 7.3) to demonstrate the theorem, they are not offering a proper proof since they are employing the theorem they are attempting to demonstrate as part of the proof itself. This results in a circular argument and is invalid as evidence

The parallelogram opposing sides theorem has to be proven using other well-known facts and theorems, like the definition of a parallelogram, the definition of congruent figures, and other relevant theorems and postulates from geometry.

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Answer:

31.40 ft^2

Step-by-step explanation:

You are trying to find the circumference, C = 2 * r * 3.14

1. To get the radius you divide the diameter by 2: 10 / 2 = 5

2. Plug your radius into the equation

C = 2 * 5 * 3.14

3. Your final answer should be 31.40 ft^2

Okay, here we have this:

Considering that a function is one-to-one if and only if no horizontal line intersects its graph more than once.

So, according with this we any horizontal line that is drawn on the line touches only one point on it, therefore the function is one to one.

Answer:

Step-by-step explanation:

(23,0)

23 computers

the they make 0 dollars

Answer: uihnjnijnjjnjuuuuuu890999999999

Step-by-step explanation: 977789gbj

Answer:

b

Step-by-step explanation:

i had this befor

Answer:

I think its b

Step-by-step explanation:

Answer:

The school was open for 240 days

Step-by-step explanation:

216 / x = 90%/100%

216*100= 21,600

21,600/90 = 240

Alexander Hamilton was a staunch supporter of the Federalist Party and, in particular, a strong supporter of a powerful central government. He opposed Thomas Jefferson's philosophy of a strict interpretation of the Constitution and advocated for the creation of a strong economy, and the promotion of manufacturing and industry.

Their visions differed. Hamilton had a vision for America that was far more centralized and industrialized than that of Jefferson. He wanted a strong national government that would be able to support a thriving economy by promoting industry, commerce, and manufacturing, while Jefferson favored a limited federal government that would be unable to interfere in the lives of individual citizens.In Hamilton's view, the United States needed to establish itself as a world power, and he believed that this could be accomplished through a strong military and a powerful economy.

He saw the United States as a great commercial and manufacturing nation, and he believed that it could only achieve this status by embracing industrialization and creating a national bank that would provide the capital necessary to finance economic growth. Jefferson, on the other hand, believed that the federal government should have only limited powers and that these powers should be strictly defined by the Constitution. He believed that the states should have more power than the federal government and that the country should be primarily agrarian.

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Answer:

my educated guess is..

Step-by-step explanation:

50-17= 33

33+18 = 51

not sure if this is what you're looking for

Hope this helps! :)

Answer:

12 hours and 51 minuets.

Step-by-step explanation:

11:17 am -> 11:17 p.m. = 12 hrs.

11:17 p.m. + 33 min.= 11: 50 p.m.

11:50 p.m.+ 18 min.= 12:41 a.m.

12hours and (33+18) or 51 minuets.

Answer:  \(\frac{7}{120}\)

Step-by-step explanation:

Volume of a figure is the measurement of space occupied by the figure. The volume of the specified sphere is given by Option B: 267. 95 m³

If the given sphere is of radius r units, then its volume is given as:

\(V= \dfrac{4}{3} \pi r^3 \: \rm unit^3\)

For the given sphere, its diameter is 8 units, thus, its radius is half of its diameter and thus, of 4 units.

Thus, volume of specified sphere is obtained as:

\(V= \dfrac{4}{3} \pi r^3 \: \rm unit^3\\\\V = \dfrac{4}{3} \pi (4)^3 =\dfrac{256}{3} \times 3.14 \approx 267.95 \: m^3\)

Thus,

Volume of a figure is the measurement of space occupied by the figure. The volume of the specified sphere is given by Option B: 267. 95 m³

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The time between successive sunspot maxima is about 11 years.

Sunspots are temporary phenomena that occur on the surface of the sun. Sunspots have a dark appearance and appear in areas of the sun's photosphere that are cooler than the surrounding area. They are areas of magnetic activity on the sun's surface, and they come and go over time. Sunspots are part of a regular cycle that lasts roughly 11 years, which is known as the sunspot cycle.

Sunspot maxima refer to periods of time during the sunspot cycle when the number of sunspots on the sun's surface is at its highest. These periods are characterized by increased solar activity, which can result in solar flares, coronal mass ejections, and other phenomena that can impact Earth's atmosphere and technology. The time between successive sunspot maxima is about 11 years, and the length of the sunspot cycle can vary slightly from cycle to cycle.

Sunspot minima refer to periods of time when the number of sunspots on the sun's surface is at its lowest. During sunspot minima, solar activity is typically lower than during sunspot maxima. The length of time between successive sunspot minima can also vary slightly from cycle to cycle.

There is a period of time between successive sunspot minima as well, given that the time between successive sunspot maxima is approximately 11 years.

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Answer:

Because:

Answer:

A. 3

Step-by-step explanation:

Answer:

a=3in

Step-by-step explanation:

Using the formula

V=a^3

Solving for a

a=V⅓=27⅓=3in

Answer:

\(pr(x=6)=\frac{17}{28}\)

Step-by-step explanation:

Well the probabilities should all up to 1. This means pr(x<6) + pr(x=6) + pr(x>6) = 1.

So plugging in the known values we get: \(\frac{1}{7} + pr(x=6) + \frac{1}{4}=1\)

To make things easier, let's multiply the 1/7 by 4/4 and 1/4 by 7/7

\(\frac{4}{28}+pr(x=6)+\frac{7}{28}=1\)

Now combine like terms: \(pr(x=6)+\frac{11}{28}=1\)

Subtract 11/28 from both sides

\(pr(x=6)=\frac{17}{28}\)

The given indefinite integral ∫ e⁵ˣ/e⁵ˣ+1 dx can be evaluated by change the correct variable is given by option D. u = e⁵ˣ + 1.

To evaluate the integral ∫ e⁵ˣ / (e⁵ˣ ) + 1) dx,

Make a change of variables.

Let us choose the correct change of variables from the given options,

A. u = e⁵ˣ

B. u = 5x

C. u = 1/(e⁵ˣ  + 1)

D. u = e⁵ˣ + 1

To determine the correct change of variables,

find du/dx and see if it matches the integrand.

Taking the derivative of each option,

A. du/dx = 5e⁵ˣ

B. du/dx = 5

C. du/dx = -5e⁵ˣ  / (e⁵ˣ  + 1)²

D. du/dx = 5e⁵ˣ

Among the given options, only option D has du/dx = 5e⁵ˣ ,

which matches the integrand e⁵ˣ  / (e⁵ˣ  + 1).

Therefore, the correct change of variables is u = e⁵ˣ  + 1.

Let us use this change of variables and solve the integral,

∫ e⁵ˣ / (e⁵ˣ  + 1) dx = ∫ du / 5

The integral of du / 5 is simply (1/5)u + C,

where C is the constant of integration.

Substituting back the original variable,

∫ e⁵ˣ / (e⁵ˣ  + 1) dx = (1/5)(e⁵ˣ  + 1) + C

Therefore, for the indefinite integral ∫ e⁵ˣ/e⁵ˣ+1 dx the correct change in variable is option D. u = e⁵ˣ + 1.

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Answer:

each of the drinks are $3

Step-by-step explanation:

Answer: 10 d d d / 19

D = 3

Step-by-step explanation:

According to the given question and making the equations we can conclude that the answer would be 40,040.

When the roots and solutions of two equations match, they are said to be equivalent. The same number, symbols, or expression must be added to or subtracted from both the equation's two sides to produce an equivalent equation. By multiplying or dividing both sides of an equation by a nonzero number, we can also obtain an analogous equation.

To form a team of 7 students consisting of 4 seniors and 3 juniors, we need to select 4 seniors out of 13 and 3 juniors out of 8.

The number of ways to select 4 seniors out of 13 is given by C(13,4), which can be calculated as:

C(13,4) = 13! / (4! * (13-4)!) = 13! / (4! * 9!) = (13 * 12 * 11 * 10) / (4 * 3 * 2 * 1) = 715

Similarly, the number of ways to select 3 juniors out of 8 is given by C(8,3), which can be calculated as:

C(8,3) = 8! / (3! * (8-3)!) = 8! / (3! * 5!) = (8 * 7 * 6) / (3 * 2 * 1) = 56

Therefore, the total number of ways to form a team of 7 students consisting of 4 seniors and 3 juniors is:

C(13,4) * C(8,3) = 715 * 56 = 40,040

Hence, the answer is (b) 40,040.

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Answer:

-2

Step-by-step explanation:

They are asking for the slope. y2-y1/x2-x1

Make a table of results for the equation

x      y

5      -2(5)+1=-10+1=-9 Y1

6      -2(6)+1=-12+1=-11  Y2

-11--9=-11+9=-2

6-5=1

Average rate pf change os -2/1=-2

Answer:

C: (4, -12)

Step-by-step explanation:

graph starts at 48 and keeps going down by 4 making the x intercept stop at 4. y intercept goes down by 4 but stops on the negative side of 12. so (4,-12)

Answer: C: 4/5

Step-by-step explanation: You can use the bar in the fraction as a dividing symbol.

Answer:  C, four fiths, 4/5

Step-by-step explanation:

The width of George Washington's face would be f = 40

The question tells us to find the width of Washington’s face, using the variable f. The equation that we are to use in order to find this is given as 4f - 100 = 60

The next thing would be for us to take the like terms of the equation

4f - 100 = 60

4f = 60 + 100

The sign next to 100 changed to positive because it went over the equal to sign

4f = 160

divide through by 4

f = 160 / 4

f = 40

Hence the width of the face of George Washington is given as 40 ft

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The most appropriate procedure from the given options that would improve the reliability and validity of grading short essay tests, thus addressing the complaint of sensitivity to bias and variability in grading, is: D) Using a scoring rubric.

A scoring rubric is a predefined set of criteria or guidelines that outlines the specific expectations and standards for evaluating student responses. By using a scoring rubric, the grading process becomes more objective, consistent, and transparent, thereby reducing bias and variability in grading.

A scoring rubric provides a structured framework that allows graders to assess and assign scores based on predetermined criteria, such as content knowledge, organization, clarity, coherence, and grammar. It ensures that all essays are evaluated using the same standards and eliminates subjective judgment as much as possible.

Administering more pretests (option A) may provide additional practice or feedback to students but does not directly address the issue of bias and variability in grading.

Grading on the curve (option B) adjusts grades based on the performance of other students in the class, which does not directly address bias or variability in grading. It can introduce its own set of issues and may not reflect the true quality of each individual student's work.

Implementing a contract system (option C) refers to a negotiated agreement between students and instructors regarding grading criteria, which may help clarify expectations but does not inherently address bias or variability.

Therefore, using a scoring rubric (option D) is the most appropriate procedure to improve the reliability and validity of grading short essay tests while minimizing sensitivity to bias and variability in grading.

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