Transform the following grammar into an equivalent grammar that has no A-productions. S→ SaB Cb B → Bb | A C → cSd | A. Transform the following grammar into an equivalent grammar in Chomsky normal form. S →gAbs | Ab A → gaba | b.
Answers
To transform the given grammar into an equivalent grammar without A-productions and Chomsky normal form, we need to eliminate the A-productions and convert the remaining productions into the desired form.
Removing A-productions:
To eliminate the A-productions (productions of the form A → α), we can substitute each A-production with the corresponding production rules that involve A on the right-hand side. In the given grammar, we have two A-productions:
S → SaB
C → A
By substituting the first A-production, we get:
S → SaB → (SaB)b → SabBb
Substituting the second A-production, we get:
C → A → gaba
Now, the grammar has no A-productions.
Conversion to Chomsky Normal Form (CNF):
In Chomsky normal form, all productions must be of the form:
A → BC
A → a
To convert the grammar into CNF, we need to modify the existing productions. In the given grammar, we have the following productions:
S → SabBb
B → Bb
C → gaba
To convert these productions into CNF, we can introduce new non-terminal symbols and rewrite the productions as follows:
S → X1Y1
X1 → Sa
Y1 → Z1b
Z1 → aB
B → X2b
X2 → b
C → gaba
Now, the grammar is in Chomsky normal form.
In summary, we have transformed the given grammar into an equivalent grammar without A-productions and in Chomsky normal form. The resulting grammar has the following productions:
S → X1Y1
X1 → Sa
Y1 → Z1b
Z1 → aB
B → X2b
X2 → b
C → gaba
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Related Questions
53. The plan of a building is in the form of a rectangle with
centerline dimension of outer walls as 9.7mx14.7m. The
thickness of the wall in super structure is 0.30m. Then its
plinth area is
a) 150m
b) 145m2
c) 145.5m
d) 135.36m
.
Answers
Answer: 150m
Explanation:
The following can be depicted from the question:
Dimensions of outer walls = 9.7m × 14.7m.
Thickness of the wall = 0.30 m
Therefore, the plinth area of the building will be:
= (9.7 + 0.30/2 + 0.30/2) × (14.7 × 0.30/2 + 0.30/2)
= 10 × 15
= 150m
The plinth area will be 150m.
Given information
Dimensions of outer walls = 9.7m × 14.7m.
Thickness of the wall = 0.30 m
Plinth area of the building = (9.7 + 0.30/2 + 0.30/2) × (14.7 × 0.30/2 + 0.30/2)
Plinth area of the building = 10 × 15
Plinth area of the building = 150m
Therefore, the Option A is correct.
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beginning from rest, an object of mass 200 kg slides down a 10-m-long ramp. the ramp is inclined at an angle of 408 from the horizontal. if air resistance and friction between the object and the ramp are negligible, determine the velocity of the object, in m/s, at the bottom of the ramp. let g 5 9.81 m/s2.
Answers
The given problem involves a 200 kg object sliding down a 10-meter-long ramp inclined at an angle of 40 degrees from the horizontal. As air resistance and friction are negligible, we can use the conservation of mechanical energy to solve for the object's velocity at the bottom of the ramp.
Initially, the object has only potential energy due to its height, which can be calculated as h = 10 * sin(40°). The potential energy (PE) is given by the formula PE = mgh, where m = 200 kg, g = 9.81 m/s², and h is the height.
When the object reaches the bottom of the ramp, all its potential energy is converted into kinetic energy (KE), which is given by the formula KE = (1/2)mv², where m = 200 kg and v is the final velocity in m/s.
Using conservation of mechanical energy, we equate the potential energy and kinetic energy: mgh = (1/2)mv². We can cancel the mass (m) from both sides of the equation and solve for the final velocity (v).
After calculating the height and solving the equation for v, you will find the object's velocity at the bottom of the ramp in m/s. Remember to maintain accuracy and professionalism when presenting your final answer.
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Determine the signal frequency bandwidth given the following: lowest frequency equals 100 Hz and highest frequency equals 8 kHz. a. 8.1 kHz b. 8000 Hz c. 7900 Hz d. 7900 kHz
Answers
Signal Frequency Bandwidth is the range of signal frequencies that a communication channel or a system can pass with acceptable attenuation or distortion.
In the case of a signal frequency bandwidth calculation, the frequency range is expressed as the difference between the upper and lower limits, which are commonly called the highest and lowest frequencies respectively. The signal frequency bandwidth given the following: lowest frequency equals 100 Hz and highest frequency equals 8 kHz is 7900 Hz. Therefore, option C is correct.
The frequency band between 100 Hz and 8 kHz is the range of frequencies that can be carried by the signal. The lowest frequency, 100 Hz, is the starting frequency, while the highest frequency, 8 kHz, is the ending frequency.The bandwidth is determined by subtracting the lower frequency from the higher frequency. The bandwidth, therefore, is the range between the highest and lowest frequencies, which is 8 kHz - 100 Hz = 7.9 kHz. This is equivalent to 7900 Hz.
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1. What is the primary goal of penetration testing? a. Attempt to uncover deep vulnerabilities and then manually exploit them b. Scan a network for open FTP ports c. Perform SYN DOS attack towards a server in a network d. Attempt to perform an automated scan to discover vulnerabilities
2. There is often confusion between vulnerability scanning and penetration testing. What is the best explanation of the difference between vulnerability scanning and penetration testing? a. Vulnerability scanning is performed using an automated tool to scan a network known vulnerability signatures. Penetration testing involves attempting to manually uncover deep vulnerabilities just as a threat actor would, and then exploiting them. b. Vulnerability scanning checks a network for outdated versions of services. Penetration testing is attempting to manually uncover deep vulnerabilities just a threat actor would, and then exploiting them. c. Vulnerability scanning is performed by manually scanning a network for known vulnerabilities. Penetration testing is attempting to manually scan a network for known vulnerability signatures using an advanced scanning tool. d. Vulnerability scanning checks a network for open ports and services. Penetratic testing is attempting to manually scan a network for known vulnerability signatu using an advanced scanning tool. 3. Khalid joins a security team where he is assigned an SOC developer role and has to build different teams under SOC. Which of the following teams should he build to deal with providing real-time feedback related to security incidents and threat detections, which can then be utilized to facilitate better prioritization of threats and a mature way of detecting threats? a. Red team b. Blue team c. Purple team d. White team
Answers
1) Note that the primary goal of penetration testing is to 2Attempt to uncover deep vulnerabilities and then manually exploit them" (Option A)
2) The best explanation for the difference between vulnerability scanning and penetration testing is; "Vulnerability scanning is performed using an automated tool to scan a network known vulnerability signatures. Penetration testing involves attempting to manually uncover deep vulnerabilities just as a threat actor would, and then exploiting them." (Option A)
3) Given the above scenario, the team that he should build to deal with providing real-time feedback related to security incidents and threat detections, which can then be utilized to facilitate better prioritization of threats and a mature way of detecting threats is "the Purple Team" (Option C).
Why is Penetration Testing Important?The major reason penetration testing is important for an organization's security is that they teach staff how to deal with any form of hostile entity break-in. Pen tests are used to determine whether a company's security practices are truly effective.
Some compliance rules require penetration testing. Aside from that, you should conduct regular pentests to analyze and upgrade your security procedures against cyberattacks.
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If a PPE doesn’t fit properly do you keep wearing them
Answers
What does abbreviation vom stand for
Answers
Answer:
vom = Volt Ohm Meter
Explanation:
The received signal is the sum of the direct and ground-reflected signals and since they travel at different distances they have different time delays. If the transmitted signal is s(t) then the received signal is x t s t t s t t ( ) ( ) ( ) = − + − 1 2 The amount of delay (in seconds) can be computed for both propagation paths, using the fact that the time delay is the distance divided by the speed of light (3 10 × 8 m/sec). Determine t1 and t2 as a function of d1.
Answers
Answer:
duuuuuuuuuuuuuuuuuhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Explanation:
duhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
What is the difference between DIN and Yoke regulator?
Answers
Answer:
The main difference between a DIN and Yoke regulator is the way they are mounted. A DIN regulator is mounted directly to the cylinder, while a Yoke regulator is mounted to the cylinder using a yoke bracket. The DIN regulator is more compact and lightweight, while the Yoke regulator is more robust and can handle higher pressures. Additionally, the Yoke regulator is more adjustable and can be used for a wider range of applications.
3. How can statistical analysis of a dataset inform a design process?
PLEASE I NEED THIS ANSWER
Answers
Answer:
you have to think then go scratch and then calculate and the design
Explanation:
The statistical analysis of a dataset inform a design process.
What is statistical analysis?Statistical analysis is a kind of tool which helps collect and analyze large amounts of data. This is helpful to identify common patterns of dataset and make trends to convert them into meaningful information.
Designers do make use of statistical analysis of dataset in design process.
Analysis is a key part of design process. Without analysis, nothing can be done in designing process.
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pretend you had to return the files to the client-what would you write in order to support your submitted filest?
Answers
what would be considered a higher-than-normal tempertaure for a discharge gas line on a reciprocating compressor
Answers
Any compressor's discharge temperature cannot exceed 225 degrees F. if the discharge temperature rises above 225 degrees.
What temperature should a reciprocating compressor's discharge gas line be at?However, many compressor packages will contain components that limit discharge temperature to no more than 148.9°C (300°F). In general, it is advised to never exceed operating discharge temperatures of 176.7°C (350°F).
What are the likely reasons why the compressor discharge has an excessively high discharge pressure?The primary cause of high condensing pressure is high discharge pressure. High condensing pressure can be caused by insufficient condenser heat dissipation, condenser fouling, insufficient cooling air or water volume, and high cooling water or air temperature.
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Use NORTHWIND database to perform following queries:
13. Get the Order Count by (Table:Orders)
I. Each Year (Hint: YEAR() function)
ii. Each quarter in each year (Hint: research on DATEPART() function)
iii. Each Month in each year (Hint: research on DATEPART() function)
14. Calculate Average, Total, Minimum, and Maximum Frieght paid (Table:Orders)
i. For each Order
ii. For each Company
iii. For each Country on all orders
iiv. for Each Carrier (ShipVia)
Answers
Get the Order Count by (Table: Orders)
I. Each Year (Hint: YEAR() function)ii. Each quarter in each year (Hint: research on DATEPART() function)iii. Each Month in each year (Hint: research on DATEPART() function)How can I retrieve the order count for each year, each quarter in each year, and each month in each year from the Orders table?To retrieve the order count for each year, each quarter in each year, and each month in each year from the Orders table in the NORTHWIND database, you can use the YEAR() function to group the orders by the year portion of the OrderDate column.
This will provide the order count for each year. To obtain the order count for each quarter in each year, you can use the DATEPART() function to group the orders by both the year and quarter portions of the OrderDate column. Lastly, to get the order count for each month in each year, you can again use the DATEPART() function to group the orders by both the year and month portions of the OrderDate column. These queries will help you analyze the order count trends over different time periods within the database.
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the shampoo we made in this experiment is a solid or dry form. what are some advantages of dry shampoo over liquid shampoo? explain.
Answers
Dry shampoo offers the advantages of convenience and water conservation over liquid shampoo. It also extends the time between regular hair washes.
One of the key benefits of using dry shampoo is its convenience. As a powder or spray, it can be applied quickly and easily, allowing for a fast refresh of your hair without the need for water or a full shower. This can be particularly useful for people with busy schedules or while traveling.
Furthermore, dry shampoo contributes to water conservation, as it reduces the amount of water needed for hair care routines. It can help extend the time between regular hair washes, which can be beneficial for those with hair types prone to damage from overwashing.
In summary, dry shampoo offers several advantages over liquid shampoo in terms of convenience, water conservation, and hair care.
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in the same circuit if w/l of the transistor is set so that the transistor drain current is 3 ma, what rd value keeps the transistor at the edge of the ohmic region?
Answers
To keep the transistor at the edge of the ohmic region, the value of RD is calculated using Ohm's law, which states that current is equal to voltage divided by resistance.The equation that determines the RD value of a transistor in saturation mode is the following:
RD = (VDSQ - VDSsat)/ IDQ, where VDSQ is the DC voltage between the drain and the source terminals, VDSsat is the saturation voltage, IDQ is the DC current flowing through the transistor, and RD is the resistor connected to the drain terminal that limits the current through the transistor.In this case, the transistor's drain current is set at 3 mA, which is equal to the IDQ value. Therefore, the equation becomes:
RD = (VDSQ - VDSsat)/3 mAIf we assume that the transistor is operating in the ohmic region, then VDSQ is the supply voltage VDD, and VDSsat is zero. Thus, the equation simplifies to:RD = VDD/3 mAIf we set the drain current at 3 mA and assume that the transistor is operating in the ohmic region, then the RD value that keeps the transistor at the edge of the ohmic region is VDD/3 mA. This value depends on the supply voltage VDD and the physical properties of the transistor. The transistor's W/L ratio can be adjusted to achieve the desired value of IDQ and the corresponding RD value.
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what is the purpose of understanding the key terms scholars use to describe cities and urban spaces?
Answers
It will be ensured that all citizen comments would be handled equally and debated. Traditions or traits that have been passed down from one generation to the next are referred to as heritage.
Finding out about your family history would give you a better understanding of who you are as a person. The word "heritage" is frequently used to refer to a tradition or feature of culture that has been handed down through the generations. German philosopher Jürgen Habermas is credited with creating the term, defining the public sphere as "made up of private citizens joining together as a public and communicating the concerns of society with the state." The basic idea of democratic participatory methods is the public sphere. The public sphere serves as the gathering and communication space for citizens.
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Air in a large tank at 300C and 400kPa, flows through a converging diverging nozzle with throat diameter 2cm. It exits smoothly at a Mach number 2.8. According to one-dimensional isentropic theory, what is
(a) exit diameter and
(b) mass flow?
Answers
Answer:
The answer is "\(3.74 \ cm\ \ and \ \ 0.186 \frac{kg}{s}\)"
Explanation:
Given data:
Initial temperature of tank \(T_1 = 300^{\circ}\ C= 573 K\)
Initial pressure of tank \(P_1= 400 \ kPa\)
Diameter of throat \(d* = 2 \ cm\)
Mach number at exit \(M = 2.8\)
In point a:
calculating the throat area:
\(A*=\frac{\pi}{4} \times d^2\)
\(=\frac{\pi}{4} \times 2^2\\\\=\frac{\pi}{4} \times 4\\\\=3.14 \ cm^2\)
Since, the Mach number at throat is approximately half the Mach number at exit.
Calculate the Mach number at throat.
\(M*=\frac{M}{2}\\\\=\frac{2.8}{2}\\\\=1.4\)
Calculate the exit area using isentropic flow equation.
\(\frac{A}{A*}= (\frac{\gamma -1}{2})^{\frac{\gamma +1}{2(\gamma -1)}} (\frac{1+\frac{\gamma -1}{2} M*^2}{M*})^{\frac{\gamma +1}{2(\gamma -1)}}\)
Here: \(\gamma\) is the specific heat ratio. Substitute the values in above equation.
\(\frac{A}{3.14}= (\frac{1.4-1}{2})^{-\frac{1.4+1}{2(1.4 -1)}} (\frac{1+\frac{1.4-1}{2} (1.4)^2}{1.4})^{\frac{1.4+1}{2(1.4-1)}} \\\\A=\frac{\pi}{4}d^2 \\\\10.99=\frac{\pi}{4}d^2 \\\\d = 3.74 \ cm\)
exit diameter is 3.74 cm
In point b:
Calculate the temperature at throat.
\(\frac{T*}{T}=(1+\frac{\Gamma-1}{2} M*^2)^{-1}\\\\\frac{T*}{573}=(1+\frac{1.4-1}{2} (1.4)^2)^{-1}\\\\T*=411.41 \ K\)
Calculate the velocity at exit.
\(V*=M*\sqrt{ \gamma R T*}\)
Here: R is the gas constant.
\(V*=1.4 \times \sqrt{1.4 \times 287 \times 411.41}\\\\=569.21 \ \frac{m}{s}\)
Calculate the density of air at inlet
\(\rho_1 =\frac{P_1}{RT_1}\\\\=\frac{400}{ 0.287 \times 573}\\\\=2.43\ \frac{kg}{m^3}\)
Calculate the density of air at throat using isentropic flow equation.
\(\frac{\rho}{\rho_1}=(1+\frac{\Gamma -1}{2} M*^2)^{-\frac{1}{\Gamma -1}} \\\\\frac{\rho *}{2.43}=(1+\frac{1.4-1}{2} (1.4)*^2)^{-\frac{1}{1.4-1}} \\\\\rho*= 1.045 \ \frac{kg}{m^3}\)
Calculate the mass flow rate.
\(m= \rho* \times A* \times V*\\\\= 1.045 \times 3.14 times 10^{-4} \times 569.21\\\\= 0.186 \frac{kg}{s}\)
explain why problem formulation must follow goal formulation
Answers
Problem formulation must follow goal formulation because the goal provides the direction and purpose for the problem.
By first setting a goal, one can clearly identify the problem that needs to be solved in order to reach that goal. Without a goal, it can be difficult to determine the specific problem that needs to be addressed.
Additionally, having a clear goal can help to focus the problem formulation process and ensure that the problem is relevant and important to the overall goal. This can help to prevent unnecessary work and ensure that the problem-solving process is efficient and effective.
Therefore, it is important to first set a goal before formulating the problem in order to have a clear direction and purpose for the problem-solving process.
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What signal propagation phenomena causes the diffusion, or the reflection in multiple different directions, of a signal?
Answers
In the radio communication system, multipath is the propagation phenomenon that causes diffusion or reflection in multiple different directions of a signal.
Multipath is a propagation mechanism that impacts the propagation of signals in radio communication. Multipath results in the transmission of data to the receiving antenna by two or more paths. Diffusion and reflection are the causes that create multiple paths for the signal to be delivered.
Diffraction occurs when a signal bends around sharp corners; while reflection occurs when a signal impinges on a smooth object. When a signal is received through more than one path because of the diffraction or reflection, it creates phase shifting and interference of the signal.
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What does hydraulic force provide in a braking system?
Power
Heat dissipation
Contact surface
Pressure
Answers
Answer:
4 or D pressure
Explanation:
A hydraulic braking system transmits brake-pedal force to the wheel brakes through pressurized fluid, converting the fluid pressure into useful work of braking at the wheels.
Answer:
pressure is the correct answer...
Explanation:
mark me brainliest
As the length of a welding cable increases, the amount of
resistance decreases.
True
False
Answers
Answer:
False
Explanation:
Resistance occurs when the flow of charge through a wire is hindered. Resistance of flow of charge increases where the cable length increases .In a longer cable the charge carriers and the atoms in the cable collide more resulting to higher resistance.
The correct answer choice is: False.
The first answer is incorrect because resistance to flow of charge in a cable has a direct relation with length of cable in that increase in length of conducting cable will result to increase in resistance to flow of charges through the cable, not decrease in resistance.
The ______________________________ instruction transfers either a number or content of a register to a destination register.
Answers
The MOV instruction transfers either number or content of a register to a destination register.
What is mov education?The mov instruction replicates the data item referred to by its second operand (i.e. register contents, memory contents, or a constant value) into the location directed to by its first operand (i.e. a register or memory). While register-to-register moves are possible, natural memory-to-memory moves are not.
What is mov in opcode?
"mov" is an instruction, encoded with the system code or "opcode" 0xb8. Since mov takes an opinion, the next 4 bytes are endless to move into eax. The opcode 0xb9 carries a constant into ecx. 0xba carries a constant into edx.
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How many FastEthernet interfaces does a 2960 switch have?
Answers
Answer:
24 i believe
Explanation:
What is a transition? A. An animation that happens on a single slide B. An outline format that uses roman numerals C. An image file imported to a title slide D. An effect that happens between slides Please select the best answer from the choices provided A B C D
Answers
Answer:
its c
Explanation:
4. A 1.5 kg turtle crawls in a straight line at a speed of 0.51 m/sec. What is the turtle's
momentum???
Answers
Answer: 0.765 m kg / s
Explanation:
Momentum = (mass) x (speed)
FILL THE BLANK.
question 3 a(n) __________ license allows authors to set conditions for the free use and distribution of their work.
Answers
The Correct answer is A(n) open-source license allows authors to set conditions for the free use and distribution of their work.
An open-source license is a legal instrument that grants permission to individuals or organizations to use, modify, and distribute software or creative works. This type of license promotes collaboration and encourages the sharing of knowledge and innovations. Open-source licenses provide specific terms and conditions that outline the rights and responsibilities of users, ensuring that the original authors' intentions are respected.
Open-source licenses have played a pivotal role in the growth of the open-source movement, which fosters a culture of transparency, collaboration, and community-driven development. By granting freedoms to users, such licenses enable a wide range of individuals and organizations to benefit from and contribute to the development of software and creative works.
Open-source licenses have been adopted by numerous projects and communities worldwide, leading to the creation of robust ecosystems, increased innovation, and the democratization of technology. The use of open-source licenses has facilitated the development of renowned software projects like Linux, Apache, and MySQL, while also promoting the sharing and dissemination of knowledge in various fields
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Technician A says that if the brake light switch is open, neither brake light will illuminate. Technician B says that the back-up lights are connected in parallel with the taillights. Who is correct
Answers
Technician A is correct. The brake light switch is a safety feature that activates the brake lights when the brake pedal is pressed. When the switch is open, it interrupts the circuit and prevents the flow of electricity to the brake lights, causing both brake lights to not illuminate.
This is because the open switch breaks the connection between the brake lights and the power source.
Technician B's statement is incorrect. The back-up lights are not connected in parallel with the taillights. Instead, they are typically connected in parallel with the reverse gear switch. When the vehicle is put into reverse, the reverse gear switch completes the circuit, allowing electricity to flow to the back-up lights and illuminating them. The taillights, on the other hand, are connected to the headlight switch and are controlled separately from the back-up lights.
To summarize, Technician A is correct that if the brake light switch is open, neither brake light will illuminate. Technician B's statement about the back-up lights being connected in parallel with the taillights is incorrect.
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For the circuit shown in Figure below:
R1 = 10KOmega, R2= 1MOmega,
R3 = 10KOmega, R4 = 10KOmega, R5 = 150KOmega, R6 = 10KOmega. Find Av=Vo/Vi
Answers
Answer:
Av = -800
Explanation:
The gain to the output of the first op-amp is ...
A1 = -R2/R1 = -1000/10 = -100
The gain of the voltage divider R3/R4 is ...
A2 = R4/(R3+R4) = 10/(10+10) = 1/2
The gain of the second op-amp circuit from the positive terminal to the output is ...
A3 = 1+ R5/R6 = 1 + 150/10 = 16
Then the total circuit gain is ...
Av = A1×A2×A3 = (-100)(1/2)(16)
Av = -800
_____
Additional comment
In the above, we have assumed ideal op-amps, with infinite gain and infinite input impedance. The resistor values used in the calculations are all Kohms, so we can avoid writing unnecessary zeros.
List five technology tools with respect to I.C.T
stating
their respective use.
Answers
Answer:
laptop printer scanner data
IMPACT OF TRANSPORTATION INNOVATION ON SHAPING PATTERNS OF SETTLEMENT TO ECONOMIC DEVELOPMENT
Answers
The impact of transportation innovation on shaping patterns of settlement to economic development is that it is one that encourages relocation as well as leads to both internal and external trade, efficient use of natural resources and others.
How does improving transportation leads to economic development?Market competition is increased by a transportation network. Resource allocation, or the utilization of particular products and services, is a topic economists frequently research. The allocation process is enhanced by a transportation system because it gives suppliers and consumers more opportunities.
Note that Access to additional markets is facilitated by better transportation infrastructure, and since efficient transportation is less expensive, it is also used more frequently.
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What is a video game according to game developers? *
5 points
A. A game with a series of rules with a specific goal that players have to work towards
B. A story or event recorded by a camera as a set of moving images and shown in a theater or on television
C. A game where you can only play online with other people.
D. A short poem or other set of words set to music or meant to be sung.
Answers
D