The rate of heat loss per unit length from the bare pipe is 163 W/m.
What is the rate of heat loss?Newton's law of cooling is a physical law in the study of heat transmission that states that the rate of heat loss in a body is directly proportional to the temperature differential between the body and its surroundings.
The law is typically qualified by the need that the temperature differential be minimal and the nature of the heat transmission mechanism stay constant. As such, it is comparable to saying that the heat transfer coefficient, which mediates heat losses and temperature variations, is constant.
As a result of Fourier's law, Newton's Law is frequently followed in heat conduction. Most materials' thermal conductivity is only moderately temperature dependent, hence the constant heat transfer coefficient condition is frequently met.
Calculation:Given, p = 20 bar
[tex]T_{sat}=T_s=486 K[/tex], ε = 0.8
D = 0.2, σ = [tex]5.67\times 10^{-8}[/tex]
h = 20 W/m^2 . K
The rate of heat transfer per unit length without insulation is,
[tex]q=0.8\times 3.14\times 0.2\times 5.67\times 10^{-8}(486^4-298^4)+20\times 3.14\times 0.2(486-238)\\q=1365+2362\\q=3727 W/m[/tex]
Temperature at the outer surface, T = 305 K
Now, Heat loss per unit length from the isolated pipe,
[tex]q'=\frac{T_{s.i}-T_{s,o}}{\frac{ln(D_o/D_i)}{2\pi k} } \\\\q' = \frac{486-305}{\frac{ln(0.3/0.2)}{2\pi \times0.058} }\\\\q'=163 W/m[/tex]
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settlement of a building after it is constructed is likely to be the greatest under which conditions? group of answer choices foundation is bearing on engineered fill foundation is bearing on friction piles foundation is bearing on clay foundation is bearing on bedrock
Foundation is bearing on bedrock is likely to experience the least settlement after construction is complete.
What is bedrock ?Bedrock is a hard, solid rock that forms the Earth's crust, and is usually found underneath soil and other loose sedimentary material. It is composed of igneous, sedimentary, or metamorphic rocks that have been fused together over time due to heat and pressure. Bedrock is typically very hard and difficult to break or dig up, making it an ideal foundation for buildings, roads, and other structures. Bedrock is also important for providing stability to ground and groundwater systems, as well as for containing natural resources such as minerals, fossils, and oil.
While the other foundation types listed may experience some settlement, bedrock is the most stable and durable foundation type, making it the least likely to settle after construction is completed.
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i) the compositions of commercially available type i and type iii portland cements are often very similar. if so, what is the reason for type iii to provide consistent high early strength? ii) what temperature is typically reached in the hottest part of the cement kiln?
i) Type III Portland cement is designed to provide higher early strength than type I. This is because the production process for type III cement is altered to produce a more finely-ground cement, which is more reactive and therefore hydrate faster.
What is hydrate ?Hydrate is a term used to describe the process of adding water to a substance or material. It is most commonly used in the context of biology, chemistry, and biochemistry, but can also be used in other areas. Hydration is an essential process for all living organisms, as it helps to maintain the balance of fluids in the body. Hydration also plays an important role in the chemical reactions that occur in the body, such as digestion, energy production, and cell repair. Hydration is also important for the preservation of materials, such as food, paper, and other products. The process of hydration can involve the absorption of water into a material, or the displacement of water molecules from the surface of a material.
ii) The temperature reached in the hottest part of the cement kiln is typically around 1450°C. This high temperature is necessary to ensure that the raw materials are properly sintered, or fused together, to form clinker. The clinker is then ground to produce cement.
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penetration or fusion issues that include weld profiles or contours and any inclusions would be classified as which type of heat input issue?
Weld quality problems associated with weld profiles, contours and inserts are classified as weld penetration/fusion problems.
Penetration or fusion problems, such as weld profiles or contours and inclusions, are usually classified as weld discontinuities as heat input problems. A discontinuity is any deviation or interruption in the desired continuity of the weld metal, which can be caused by any number of reasons, such as incorrect welding technique or inadequate quality control. Heat input problems, on the other hand, refer to problems related to the amount or distribution of heat used in the welding process, such as underheating, overheating or uneven heating of the workpiece. Both types of problems can significantly affect the quality and integrity of the final weld.
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which of the following occurs in a file system or list when adding data about one subject requires we also add data about another subject?
This is known as a cascading relationship and is common when dealing with relational databases.
What is cascading relationship?A cascading relationship is a type of relationship between two or more entities in which the related entities share a hierarchical relationship. This type of relationship allows for the data in one entity to be automatically updated when data in the related entity is changed. For example, when a customer changes their address in their record, any orders they have placed with a company will also update to reflect the new address. Cascading relationships are often used to ensure that data remains accurate and up-to-date across multiple entities.
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A resistor has the following color sequence red green orange red what is the resistance in ohms
The first two bands represents the first two digits of the resistance value in ohms.
What the multiplier will do to shift the decimal place around?This multiplier will shift the decimal place around to change the value from mega ohms to milliohms and anywhere in between. The fourth color band signifies tolerance. Giving a total of 1200+_10%.
The attachments show the labeling of the network nodes. We found it convenient to do this so we could identify the specific nodes any given branch was attached to. Then the connections for each resistor were identified, and the list sorted to make it easier to see parallel connections.
Therefore, The first two bands represents the first two digits of the resistance value in ohms.
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consider the 2014-t4 aluminum plate shown in sketch f. what is the largest tensile stress this plate can withstand? what is the largest center crack that can exist while ensuring that the material will still yield?
The largest tensile stress this plate can withstand is 49.3 ksi, and the largest center crack that can exist while ensuring that the material will still yield is 0.073 inches.
What is tensile stress?Tensile stress, also known as tension, is a type of mechanical stress that occurs when forces act on an object in opposite directions along its length. This force is often applied to a material by pulling it apart, stretching it, or compressing it. The direction of the applied force is typically along the length of the material, and results in a stress on the material that is perpendicular to the direction of the applied force. Tensile stress causes the material to elongate, or stretch, and can be measured by the change in length of the material. It is the opposite of compressive stress, which causes the material to shorten. The amount of stress experienced by the material is dependent on the magnitude of the applied force and the material's physical properties.
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Which of the following individuals was convicted of various computer crimes and was known for his ability to conduct successful social engineering attacks?
A) Kevin Mitnick
B) Vladmir Levin
C) Timothy Lloyd
D) David Smith
Kevin Mitnick was found guilty of a number of computer crimes and was known for successfully launching social engineering attacks.
What is social engineering?Social engineering refers to a broad range of criminal behaviors that take place through interactions with other people. Through psychological manipulation, it persuades people to violate security or reveal personal information.
Attacks using social engineering involve one or more steps.Before beginning the attack, the perpetrator conducts an investigation into the intended victim to gather the necessary background information, such as potential entry points and weak security protocols. After that, the attacker makes moves to win over the victim's trust and provide the impetus for subsequent actions that violate security protocols, such as giving access to vital resources or revealing sensitive information.
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There are critical times when memory problems often manifest themselves.
Match each critical time on the left with the corresponding cause of the memory problems on the right.
This event can require more memory and can cause problems if there is not enough memory when it occurs.
Memory is not properly seated or missing/the motherboard is defective.
Incompletely or improperly doing this can cause errors that appear to be memory-related.
The memory is not compatible and was not installed and configured properly.
Installation of software, the initial boot of a new computer, the addition or removal of hardware, and the proper memory upgrade.
How can my memory be upgraded?A computer's performance may be improved by adding more RAM or system memory. An update comprises either swapping out the old memory modules with a set of new ones with more capacity or installing new memory modules on top of the old ones.
Do memory upgrades make sense?Whether you choose to increase your memory or storage, your PC's performance will be noticeably better. If you add more RAM to a slow computer, it will run faster since it can handle more simultaneous tasks.
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if a typical house uses 10,900kwh 10 , 900 kwh per year, calculate how many houses could have their full energy needs provided for one year by the turbine above if it continued to operate as described for one year. show your work.
That is equal to 1.2 6157 kW of power is being is being used by party house. So from here the number of houses comes out to be four 2 8, 4000, 428,038 houses.
How it is calculated?Given that:A typical house in the United States uses about 10,900 kWh,1 TWh (terawatt-hour) =1×10^6 GWh (gigawatt-hour) =1×10^9kWh (kilowatt-hour)The three Gorges Dam in China produces about 90TWh of electricity each year. If it was to to be built in the United states, the number of houses such a plant would be able to provide the electricity for in a year is given as:Number of houses = Amount of electricity produced in a year / amount of electricity used by each house.Number of houses = 90 TWh / 10,900 kWh = 90 × 10⁹ kWh / 10,900 kWh = 8256881Therefore the number of houses ≈ 8.25 million housesTo learn more about typical house refers to:
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what is the relative resolution (i.e. how many discrete levels are there) of an oscilloscope with an 8-bit d/a converter? with a 12-bit d/a converter? with a 16-bit d/a converter?
what is the relative resolution (i.e. how many discrete levels are there) of an oscilloscope with 2^n, 8-bit D/A converter has 256 levels, 12-bit D/A converter has 4096 levels and 16-bit converter has 65536 levels.
In the system development and prototyping phases, oscilloscopes are of course the preferred tool for doing these measurements, but these are principally constrained by the vertical resolution of the scope's front-end. For instance, an 8-bit oscilloscope has a dynamic range of 256:1, therefore the theoretically lowest signal on a range of 1 volts is 3.9 millivolts (mV). Higher sensitivity and offset range are required to view millivolt level ripple signals on a 3.3 volt bus. Additionally, signal levels at the scope input will be muted when employing high attenuation probes to prevent circuit loading, making it difficult to measure them unless the instrument has a high resolution.
The ratio of the largest input signal an oscilloscope can handle to the smallest signal amplitude it can detect is known as oscilloscope vertical resolution. Resolution is often measured by the analog-to-digital converter's bit count (ADC). The resolution is equal to the amount of bits multiplied by two. The resolution of an 8-bit converter is therefore 28 or 256:1. The resolution of a 12-bit converter is 4096:1, which is 16 times higher than that of an 8-bit converter.
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how to the linear thermal expansion coefficients for steel, copper and aluminium compare ? fundamentally what are the differences occuring at the atomic level to cause the difference ? g
Since the linear expansion for steel, copper, and aluminum. Thus, the value of copper is lower than that of alum and lower than that of steel. Therefore, we might conclude that the steel expands less.
What is the thermal expansion coefficient of copper and aluminum?Copper and aluminum have the following thermal linear coefficients of expansion per degree centigrade: 17 10E-6 copper. 2310E-6 aluminum.
Which expands more, steel or aluminum?A steel panel that is 100' long and is subjected to a temperature change of 100°F will lengthen by 0.78", whereas an aluminum panel of the same length and subjected to the same temperature change will lengthen by 1.56".
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a high efficiency furnace main burner shuts off after initial ignition a toilet is cycling on and off, and the tank is refilling every few minutes. What should you check first?
1) flush valve
2) fill valve
3) flapper
4) handle
5) overflow tube
A high-efficiency furnace main burner shuts off after initial ignition a toilet is cycling on and off, and the tank is refilled every few minutes. The fill valve should be checked first. The correct option is 2.
What is a furnace?Air is heated by furnaces, and ducts are used to circulate the hot air throughout the house. Boilers heat water and produce steam or hot water for heating purposes.
Hot water can be delivered by baseboard radiators, radiant floor systems, or can heat air via a coil. Steam is distributed via pipes to steam radiators.
Therefore, the correct option is 2) fill valve.
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an orange and red triangular sign on a vehicle always means?
when connecting three transformers for three-phase use with a delta secondary, a voltage test should be done before closing the secondary. the correct voltage reading is .
When connecting three transformers for three-phase use with a delta secondary, a voltage test should be done before closing the secondary. The correct voltage reading is zero volts. The correct option is C.
What is transformer?A transformer is an electrical device that transfers energy from one electric circuit to another using the electromagnetic induction principle.
It is intended to change the AC voltage between the circuits while keeping the current's frequency constant.
Before closing the secondary when connecting three transformers for three-phase use with a delta secondary, a voltage test should be performed. Zero volts is the proper voltage reading.
Thus, the correct option is C.
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which of the following statements about engineering design are true: group of answer choices engineering design is a strictly linear process. engineering design involves both analysis and synthesis. engineering design is characterized by a strong graphical component.
All of the statements about engineering design are true.
What is engineering design ?Engineering design is the process of devising a system, component, or process to meet desired needs. It is a decision-making process in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to meet these stated needs. It involves the creative application of scientific principles to design and build structures, machines, devices, systems, materials and processes.
1. Engineering design is a strictly linear process: Engineering design is a systematic process that involves breaking down a problem into smaller, manageable parts, analyzing each part, and then synthesizing a solution based on the analysis. This process is linear, meaning it progresses in a step-by-step manner.
2. Engineering design involves both analysis and synthesis: Analysis is the process of breaking down a problem into its component parts and understanding how they interact
3. Engineering design is characterized by a strong graphical component: Engineering design often involves creating and manipulating diagrams, drawings, and models to represent the problem, design solutions, and final product.
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building a house of quality begins by identifying the voice of the customer and select , and listing them in the appropriate places in the diagram.
The first step in creating a House of Quality is to determine the customer's voice and the technical design aspects.
In design, what does technical mean?During the technical design phase, the event team writes the code and describes every minute aspect of the design—or at least some of it—in detail. It reveals to the designers what the system will actually do. The following graphic provides an illustration of technical design: Design for technology. It describes anything else that transforms the customer's requirements into a solution to their problem.
It describes the system's methods or functions.
It illustrates the conceptual model, or what a system ought to look like. It demonstrates the data's structure and flow. In addition to the strategies, it also includes the process and its sub-processes. It includes the conceptual design's operation and functioning.
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which of the following is an example of an advantage of being able to access a database via the web? more than one answer may be correct.
The most prevalent database systems are relational databases, as explained. They consist of SQL Server, Oracle, Sybase, Informix, etc MySQL databases, among others.
What are examples and databases?A collection is a planned gathering of data. They enable the manipulation and storage of data electronically. Data administration is made simple by databases. A database is used to hold information on people, their phone calls, and other contact information in an online telephone directory.
How can a database be made?Select New Database from the context menu by right-clicking Databases. Select a database name in New Database. Select OK to establish the database using all default settings; otherwise, carry out the next optional procedures. to modify owner's name.
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which statement is invalid regarding the usage of the oracle cloud infrastructure (oci) devops service?
Resources across multiple departments can interact, as mentioned in the statement.
What separates Oracle Cloud from AWS?Except for data storage services, Oracle's online backup pricing is often less expensive than AWS'. Oracle gives customers with a sizable cost savings over other cloud storage when they need to move information out of the cloud. Data transport into Amazon Web services or Oracle is price, but data transfer out is not.
Is Azure preferable to Oracle?The consensus among our evaluators is that Cloud Computing is a reliable, manageable, and reliable service. In the categories of pricing и ease of deployment, Oracle Platform did triumph. Read our in-depth post about Microsoft Azure to discover more.
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(16%) Now consider the powers of the number 3310 (the class number, which is three thousand, three hundred and ten). Since 3310 is bigger than 255, the data type char will not be in the question. By powers of 3310, this means 3310, square of 3310 or 3310 2 = 10956100, cube of 3310 3 = 36,264,691,000 and so on (the 4th power, the 5th power etc. of 3310 until overflow). Note that with different data types, overflow may happen at different powers of 3310 (a) (5%) Write / modify program to compute the powers of 3310 for the data types short (signed 2 bytes), int (signed 4 bytes), and long (signed 8 bytes).
The program calculates the powers of the number 3310 for three data types: short, int, and long. It uses the pow function and a for loop to calculate the powers until overflow occurs.
The given program computes the powers of the number 3310 for three different data types: short, int, and long. The pow function from the cmath library is used to calculate the power of a number. A for loop is used to calculate the powers of 3310 from 2 to 8 for short, from 2 to 12 for int, and from 2 to 20 for long. The calculated results are displayed on the console using cout from the iostream library.
The program calculates the powers of 3310 until overflow occurs, which is different for each data type. The short data type has a 2-byte storage size and can handle values up to 32767, so it overflows at the 8th power of 3310. The int data type has a 4-byte storage size and can handle values up to 2147483647, so it overflows at the 12th power of 3310. The long data type has an 8-byte storage size and can handle values up to 9223372036854775807, so it overflows at the 20th power of 3310.
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which of the following products do not provide an enterprise database? group of answer choices ms sql server ibm db2 oracle rdbms ms access
MS Access, which does not offer an enterprise database, is the right response.
An enterprise database is what?An enterprise database is used by businesses and other big organizations to handle their massive data collections. A database of that kind of nature enhances productivity for firms.Except for MS Access, all other alternatives have corporate databases.Consequently, the correct response is that MS Access solutions do not offer an enterprise database.Oracle. enables access to data for managers, analysts, and IT from any location, even via mobile devices. Utilize insights to create a smooth customer experience throughout lead to contract to renewal by combining sales, marketing, as well as service data in a cohesive, prebuilt analytics solution.To learn more about enterprise database from the given link
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a line chart displays a numerical variable as a series of data points connected by a line. which of the following are true of line charts? select all that apply.
We may draw two lines a day on a single chart, which is useful for monitoring trends or shifts over time.
How does that chart work?When it comes to visualizing data, a chart (sometimes referred to as a graph) uses symbols to represent the data, such as columns in a bar graphs, lines in a graphical form, nor slices in either a pie chart.
Describe a chart example?Data sets, frequency distributions, graphs, and descriptive statistics are examples of common graph types. Graphs are a fantastic tool for presenting statistics and presenting information. To display quantitative data that is unrelated to one another, use a graph or chart.
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The principal dimensional measurement is length. Which of the following is the best definition of length?
a. A dimension
b. The shortest distance between two points
c. The number of units of measurement that separates two points
d. The opposite of width
one large problem designers face when designing air-cooled refrigeration and air conditioning equipment is a changing ambient from the changing seasons. true false
This statement is True: one large problem designers face when designing air-cooled refrigeration and air conditioning equipment is a changing ambient from the changing seasons.
Now more than ever, from tiny startups to Fortune 500 companies, design-driven thinking is everywhere. Success depends more and more on a company's ability to incorporate design into its core beliefs. Even with these victories, diversity is still one of design's major threats.
The lack of diversity among computer industry employees has received much attention. It is reported that efforts are being made to increase diversity among tech staff members, including designers and engineers. Nevertheless, the numbers have barely changed during the last two years. The majority of conference speakers, press subjects, and design leadership are still white men.
Those of us who are fortunate enough to already work in this sector must take more initiative. It must begin at the individual level. It is insufficient to attribute the lack of applications from women and people of color to the "pipeline."
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a shunt regulator utilizing a zener diode with an incremental resistance of 10 q is fed through a 200-q resistor. if the raw supply changes by 1.0 v, what is the corresponding change in the regulated output voltage?
A shunt regulator's controlled output voltage changes in response to changes in the raw supply voltage and the properties of the Zener diode employed in the regulator.
Given that the shunt regulator employs a Zener diode with an incremental resistance of 10 and is supplied through a 200 resistor, we can use Ohm's law to compute the voltage drop across the Zener diode: V Zener = I Zener multiplied by R Zener where V Zener denotes the voltage drop across the Zener diode, I Zener is the current flowing through the Zener diode, and R Zener denotes the Zener diode's incremental resistance. The voltage drop across the Zener diode in a shunt regulator is kept constant by adjusting the current through the diode. When the voltage of the raw supply fluctuates,
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the design team for a processor is choosing between a pipelined or non-pipelined implementation. here are some design parameters for the two possibilities:
CPU execution takes 2.54 ns for the pipelined version and 2.8 ns for the non-pipelined version. The aforementioned claims lead us to the conclusion that the pipelined version is quicker.
What does pipelined mean to you?Pipelining is the technique of storing and ranking the execution order of computer instructions. The CPU may execute an instruction in a series of stages thanks to the pipeline, often known as a "logical pipeline." The processing proceeds in an uninterrupted, systematic, and slightly overlapped fashion.
What sort of pipelining is that?The term "piping" is frequently used in daily life. For instance, on the assembly process of a vehicle manufacturer, different work stations are frequently used to do each distinct duty, such as installation the engine, mounting the top, and fixing the wheels.
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according to the discussion on address spaces on the textbook, which of the following statements is not true? a. each thread has its own address space; b. each process has its own address space; c. an address space refers to the set of addresses that a process or a thread can use; d. if an address can be represented in 64 bits, its corresponding address space is 264 bytes.
According to the dictionary's explanation of address spaces, if an object can be stored in 48 bits, its corresponding internet layer is 264 bytes. Two bits make form a crumb, four bits make, and eight bits make up a byte.
What exactly do bytes mean?In most computer systems, a byte is a resulting combination digit lengthy unit of data. To store a character, for instance a letters, number, or typographic sign, most computers utilize a unit called a byte.
How much data can fit into a byte?Bytes, which generally include eight bits, are the basic building blocks of digital information. The smallest unit of data that may be accessed in different computer systems is the byte.
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which of the following statement regarding load is false? group of answer choices dead load consists of the weight of the materials of which the building is constructed, such as walls, partitions, columns, framing, floors, roofs, and ceilings. building codes have tables that provide information regarding minimum required live loads. in building design, lateral load refers to the effects of wind and earthquakes. roofs are designed to support dead loads only.
The following is a load false statement: building codes have tables that provide information regarding minimum required live loads.
What is the physics equivalent of a load?A "load" or "fother" of metallic lead was, in the broadest sense, about or precisely equivalent to one long ton of 2240 lbs (1016 kg), or one tonne. There have been reports of others weighing between 991 kg and 2520 pounds (1143 kg).
What distinguishes effort from load?A load is anything we're attempting to move, lift, or just have external force operate on. The input force we use to move or lift a load is referred to as an effort.
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Solve for x. −12x+13>35 Drag and drop a number or symbol into each box to correctly complete the solution. Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse. x Response area
Solving for x in the inequality results to
x < -1.83How to solve for xTo solve for x in the inequality
-12x + 13 > 35,
subtracting 13 from both sides:
-12x + 13 - 13 > 35 - 13
-12x > 22
divide both sides of the inequality by -12:
(-12x) / -12 > 22 / -12
x < -22/12
Finally, we'll simplify the expression on the right side of the inequality:
x < -1.83
So the solution is x < -1.83.
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One of the most commonly used piping materials for building sewers is green or white PVC sewer and drain piping.True or False?
Green or white PVC sewer and drain piping is one of the most commonly used piping materials for building sewers. This is a true statement.
What is the material of the piping?Copper, PVC, CPVC, and PEX are the most frequently utilized plumbing piping materials. This article will provide an overview of these four materials as well as other building materials.
PVC and ABS are the most commonly used building materials for new homes, whereas cast iron was and is still the most common building material. You can simply replace the rusted sections of your cast iron pipes with PVC or ABS rather than replacing the entire set.
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true/false. a systems analyst with a diverse set of skills - management, leadership, technical, conflict management, and customer relationship - who is responsible for initiating, planning, executing, and closing down a project.
The correct answer is True- the mentioned statement "a systems analyst with a diverse set of skills - management, leadership, technical, conflict management, and customer relationship - who is responsible for initiating, planning, executing, and closing down a project".
Who is known as systems analyst?
A systems analyst who is in charge of starting, planning, carrying out, and finishing a project and who possesses a variety of talents, including management, leadership, technical, conflict management, and customer interaction. a phase's final product in the SDLC.
Hence , the mentioned statement is given question is True in respect of systems analyst.
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