Topic 19 formulating and solving systems

Solving Systems of Equations Real World Problems. Wow! You have learned many different strategies for solving systems of equations! First we started with Graphing Systems of Equations.Then we moved onto solving systems using the Substitution Method.In our last lesson we used the Linear Combinations or Addition Method to solve … elegant vintage dresses Core Idea 1 Number and Operation Understand number systems, the meanings of operations, and ways of representing numbers, relationships, and number systems. • Understand and use the inverse relationships of squaring and finding square roots to simplify computations and solve problems psalms 91 niv Three Methods for Solving Systems of Equations 1. Graphing a. Graph one equation b. Graph the other equation on the same plane. c. Find the point, or points, or intersection. Ex 1: (6, 5) is the solution to the system. It is consistent and independent. Ex 2: The lines are parallel. There is no solution to this system. It is inconsistent. Ex 3: and hulk comic vine Therefore, a problem-solving agent is a goal-driven agent and focuses on satisfying the goal. Steps performed by Problem-solving agent. Goal Formulation: It is the first and simplest step in problem-solving. It organizes the steps/sequence required to formulate one goal out of multiple goals as well as actions to achieve that goal.To begin solving this situation, you developed the following system of equations: Let g = number of games rented, and let m = number of movies rented. g + m = 12 4.50g + 3.99m = 49.92 You are now ready for the next steps in solving the system of equations. 1. Step 4: Complete the table, and then use it to solve the system of equations.D09D4FD3-1C1A-49A4-89FB-136976490F3B.jpeg - - Tanin An Topic 19: Formulating and solving systems LESSON 4: HOMEWORK Notes or additional instructions | Course Hero D09D4FD3-1C1A-49A4-89FB-136976490F3B.jpeg - - Tanin An... School No School Course Title AA 1 Uploaded By MagistratePrairieDog2910 Pages 1 This preview shows page 1 out of 1 page. emily willis xnxxPlease solve, show work, and give detail explanation 6. A firm offers a 6.4 percent bond with a current market price of $760.50. The yield-to- maturity (YTM) is 8.52 percent. The face value is $1,000. Interest is paid semi-annually. How many years until this bond matures? stereo 7. A bond that pays ...Laplacian (r:r ) r:r = @ @x @ @x + @ @y @ @y + @ @z @ @z Introduction to Curvilinear Co-ordinate System The Curvilinear co-ordinates are the common name of di erent sets of co-ordinates other than Cartesian coordinates. In many problems of physics and applied mathematics it is usually necessary to write vector equations. dometic blinds …Exercise 19. At Quizlet, we’re giving you the tools you need to take on any subject without having to carry around solutions manuals or printing out PDFs! Now, with expert-verified solutions from SpringBoard Algebra 2 1st Edition, you’ll learn how to solve your toughest homework problems. Our resource for SpringBoard Algebra 2 includes ... happy birthday lady gif Solving By Substitution These are the steps: Write one of the equations so it is in the style "variable = ..." Replace (i.e. substitute) that variable in the other equation (s). Solve the other equation (s) (Repeat as necessary) Here is an example with 2 equations in 2 variables: Example: 3x + 2y = 19 x + y = 8 Optimization Modeling with LINGO Sixth Edition Preliminary LINDO Systems, Inc. 1415 North Dayton Street, Chicago, Illinois 60622 Phone: (312)988-7422 Fax: (312)988-9065View D09D4FD3-1C1A-49A4-89FB-136976490F3B.jpeg from AA 1- Tanin An Topic 19: Formulating and solving systems LESSON 4: HOMEWORK Notes or additional instructions based on whole-class discussion of. Expert Help. Study Resources. ... 2 For NICU no COVID 19 positive person or their household contacts should be. document. 51. …Optimization Modeling with LINGO Sixth Edition Preliminary LINDO Systems, Inc. 1415 North Dayton Street, Chicago, Illinois 60622 Phone: (312)988-7422 Fax: (312)988-9065Abstract. Solving problems is the core of computer science. Programmers must first understand how a human solves a problem, then understand how to translate this "algorithm" into something a ... junior pageant nudists 236 Chapter 5 Solving Systems of Linear Equations 5.1 Lesson WWhat You Will Learnhat You Will Learn Check solutions of systems of linear equations. Solve systems of linear equations by graphing. Use systems of linear equations to solve real-life problems. system of linear equations, Systems of Linear Equations p. 236 solution of a system of linearTopic 7.1 – Solving 2×2 Systems of Linear Equations Solving [latex]2 \times 2[/latex] Systems of Linear Equations demonstrates the substitution method and the elimination method for solving a system of two linear equations in two variables. The connection to linear algebra, vector spaces and matrices is not done in this lesson. 18 00 pst Expert Answers • 2 Formulating And Solving Systems Algebra 1 03/27/19 The sum of two numbers is 12. The product of those same two numbers is -64. Find the numbers. Follows • 1 Expert Answers • 1 Still looking for help? Get the right answer, fast. Ask a question for free Get a free answer to a quick problem. Most questions answered within 4 hours. wonderwoman wiki You're truly correct my good sir. If you are not sure, here is the process: Since d=5c and d=c+20, let's plug in (c+20) for d in the first equation. c+20=5c. After solving this equation with one variable, we get c=5. If cat is 5 pounds, the dog is 5 times that, so it's 25 pounds. Or you add 20 to 5 and get 25.[1 3 2 2 5 2] [] [] [1 0 -4 0 1 2]. Sal solves missing number in problems like 73 = ___ + 57. If you are looking for math problem solving, . Find step-by-step Algebra solutions and your answer to the following textbook question: Fill in the missing operation or missing equation to complete the table.Topic 19: Formulating and solving systems 1 LESSON 5: HOMEWORK Notes or additional instructions based on whole-class discussion of homework assignment: …Now, with expert-verified solutions from Algebra 1, Volume 2 1st Edition, you’ll learn how to solve your toughest homework problems. Our resource for Algebra 1, Volume 2 includes answers to chapter exercises, as well as detailed information to walk you through the process step by step. With expert solutions for thousands of practice problems, you can take the guesswork out of studying and move forward with confidence. what is today and tomorrow's weather Elementary Fluid Dynamics (corr. Basic Principles of Classical and Statistical Thermodynamics [PDF 35p] This note covers the following topics: Thermodynamic and Non-Thermodynamic Properties, Microstates and Thermodynamic States, Concept of Energy, Microstate Driving Forces, Thermodynamic Driving Forces, Intensive and Extensive Propertie, The ...Pharmaceutical professional with solid industrial experience in Formulation Development, Validation, Tech Transfer, Process Improvement, Commercial Operations and Continuous Process Verification ... rec tec smoker recipes View Lesson 5 Homework.docx from MATH 232 at West Catholic High School. Topic 19: Formulating and solving systems LESSON 5: HOMEWORK Notes or additional ...standard treatment guidelines 2021 pdf ghana. In spherical coordinates, where r is distance from the origin of the coordinate system, q is the colatitude, and l is azimuth or longTesting a solution to a system of equations Creating systems in context Interpreting points in context of graphs of systems Interpret points relative to a system Math > Algebra 1 > Systems of equations > Introduction to systems of equations © 2023 Khan Academy Terms of use Privacy Policy Cookie Notice Systems of equations: trolls, tolls (1 of 2) IXL skill plan | Intensified Algebra 1 plan for Agile Mind Test prep View by: Grades Topics Weekly plans Skill plans Skill plan for Agile Mind - Intensified Algebra 1 IXL provides skill alignments with recommended IXL skills for each unit. Find the IXL skills that are right for you below! Unit 1 2 3 4 5 6 7 8 9 Print skill planThis page continues from Problem Solving an Introduction that introduces problem solving as a concept and outlines the stages used to successfully solve problems. This page covers the first two stages in the problem solving process: Identifying the Problem and Structuring the Problem. Stage One: Identifying the Problem ups drop site Engineering Management and Systems Engineering, George Washington University, 800 22nd St NW, Suite 2680, Washington, District of Columbia, 20052 USA. ... While the mechanisms by which humans formulate and solve problems have been described, mechanisms for rapid, concurrent formulating and solving are not well … counter scarf terraria Address what expenses the solution will decrease, how this solution will free up revenue streams and what intangible benefits, such as increased client satisfaction, your solution will bring. This should all fit into a single short paragraph. 7. Conclude by summarizing the problem and solution Now you'll move on to your conclusion.Do this: 9=9 (9+9=18) divide 4 by 2, you get 2. (4 is the difference between the two values) now add 2 to one side, and subtract 2 from the other. 9+2=9-2. 11=7 (11+7=18) Some of you guys will overthink something as simple as this, read the problem carefully and evaluate what you have learned one by one to successfully get the answer.f (x)=ab^x power to a power rule multiply the exponents dividing exponents if they have the same base, subtract the exponents multiplying exponents if they have the same base, add the exponents zero power rule any number to the zero power is equal to one negative exponents Negative exponents always have to SWITCH positions in their fractions. xfinity xb6 t specs Topic 19: Formulating and solving systems 155 Lesson 6: Using graphs to solve systems of equations LESSON 6: OPENER Sasha is trying to solve the following problem: The Botany Club wants to fence off a new garden. The perimeter of the garden is 25 feet. The length of the garden is twice its width. What are the dimensions of the garden?Jul 28, 2021 · Figure 16.5.1: To convert a system of equations into a single matrix equation, we will first rearrange the equations for a consistent order. Then we will write out the coefficient ( A ), variable ( X ), and constant ( B) matrices. Next we will begin the process of writing out the three matrices that make up the matrix equation. A solution to a system of three equations in three variables (x,y,z), ( x, y, z), is called an ordered triple. To find a solution, we can perform the following operations: Interchange the order of any two equations. Multiply both sides of an equation by a nonzero constant. Add a nonzero multiple of one equation to another equation. hanna ray nudes PearsonB. SOLVE A SYSTEM BY GRAPHING One way to solve a system of linear equations is by graphing each linear equation on the same 𝑥𝑥𝑦𝑦-plane. When this is done, one of three cases will arise: Case 1: Two Intersecting Lines . If the two lines intersect at a single point, then there is one solution for the system: the point of intersection.Several mathematical formulations for the joint order picking problem (JOPP) in low-level picker-to-part warehousing systems are introduced, demonstrating the …Optimization Modeling with LINGO Sixth Edition Preliminary LINDO Systems, Inc. 1415 North Dayton Street, Chicago, Illinois 60622 Phone: (312)988-7422 Fax: (312)988-9065 kroxam Step 1) To solve a system of 2 equations with 3 variables say x, y, and z, we will consider the 1st two equations and eliminate one of the variables, say x, to obtain a new equation. Step 2) Next, we write the 2nd variable, y in terms of z from the new equation and substitute it in the third equation.As it will be explained in Section 5.2, this problem formulation is solved by using integer linear programming (ILP), where the ILP-based Pareto frontier is used as baseline to (1) …A solution to a system of three equations in three variables (x,y,z), ( x, y, z), is called an ordered triple. To find a solution, we can perform the following operations: Interchange the order of any two equations. Multiply both sides of an equation by a nonzero constant. Add a nonzero multiple of one equation to another equation. fake agent xvideos Feb 13, 2022 · Translate to a system of equations and then solve: The difference of two complementary angles is 80 degrees. Find the measures of the angles. Answer Example 4.3.13 Translate to a system of equations and then solve: Two angles are supplementary. The measure of the larger angle is twelve degrees less than five times the measure of the smaller angle. pornhub vega Three Methods for Solving Systems of Equations 1. Graphing a. Graph one equation b. Graph the other equation on the same plane. c. Find the point, or points, or intersection. Ex 1: (6, 5) is the solution to the system. It is consistent and independent. Ex 2: The lines are parallel. There is no solution to this system. It is inconsistent. Ex 3: and List of dissertations / theses on the topic 'Mesh Moving'. Scholarly publications with full text pdf download. ... equation is then successfully coupled to a number of convection dominated PDEs in 1D and 2D and the relative merits of solving the resultant systems, using a simultaneous or ... nbn:de:bvb:19-135874. Full text ...• To solve linear simultaneous algebraic equations • To solve nonlinear algebraic equations • To interpolate functions • To solve o.d.e.'s • i.v.p.'s • b.v.p.'s • To solve p.d.e.'s • To integrate functions • Many of these techniques may have to be used to solve a single problem 6 letter unscramble In total, there are a How many bicycles and how many tricycles ara in 139 Topic 19: Formulating and solving systems Part : Using whatever method you would like (for example, guess-and-check or logical thinking), solve each system below. In he last column, check that your solution makes both equations in the system true.Learn about systems of equations using our free math solver with step-by-step solutions. Skip to main content. Microsoft Math Solver. Solve Practice Download. Solve Practice. Topics ... Solve for a Variable. Factor. Expand. Evaluate Fractions. Linear Equations. Quadratic Equations. Inequalities.Here are some steps to follow: 1. Understand the problem. Understand all the words used in stating the problem. Understand what you are asked to find. Familiarize the problem situation. 2. Translate the problem to an equation. Assign a variable (or variables) to represent the unknown.Figure 16.5.1: To convert a system of equations into a single matrix equation, we will first rearrange the equations for a consistent order. Then we will write out the coefficient ( A ), variable ( X ), and constant ( B) matrices. Next we will begin the process of writing out the three matrices that make up the matrix equation. venta airwasher parts It is the process from which many of the following creative problem solving techniques have been designed. Convergent thinking: Convergent thinking is the subsequent process of narrowing down the possibilities to 'converge' on the most appropriate form of action. The elements necessary for divergent thinking include:Example 9.6.1: Writing the Augmented Matrix for a System of Equations. Write the augmented matrix for the given system of equations. x + 2y − z = 3 2x − y + 2z = 6 x − 3y + 3z = 4. Solution. The augmented matrix displays the coefficients of the variables, and an additional column for the constants.So we have a system of equations (that are linear): d = 0.2t; d = 0.5(t−6) We can solve it on a graph: ... = 19; y = 8 − x . Solve using the usual algebra methods: Expand 2(8−x): 3x + 16 − 2x = 19; y = 8 − x; Then 3x−2x = x: x + 16 = 19; y = 8 − x; And lastly 19−16=3. x = 3; y = 8 − x . Now we know what x is, we can put it in ... paul mccartney happy birthday gif The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs. Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience!Three Methods for Solving Systems of Equations 1. Graphing a. Graph one equation b. Graph the other equation on the same plane. c. Find the point, or points, or intersection. Ex 1: (6, 5) is the solution to the system. It is consistent and independent. Ex 2: The lines are parallel. There is no solution to this system. It is inconsistent. Ex 3: and A solution to a system of three equations in three variables (x,y,z), ( x, y, z), is called an ordered triple. To find a solution, we can perform the following operations: Interchange the order of any two equations. Multiply both sides of an equation by a nonzero constant. Add a nonzero multiple of one equation to another equation. pharmacy indiana pa PearsonUniversity of IowaOptimization Modeling with LINGO Sixth Edition Preliminary LINDO Systems, Inc. 1415 North Dayton Street, Chicago, Illinois 60622 Phone: (312)988-7422 Fax: (312)988-9065A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y -value with the other. We're going to explain this by using an example. { y = 2 x + 4 3 x + y = 9 We can substitute y in the second equation with the first equation since y = y. 3 x + y = 9 3 x + ( 2 x + 4) = 9 who pays more doordash or uber eats• To solve linear simultaneous algebraic equations • To solve nonlinear algebraic equations • To interpolate functions • To solve o.d.e.’s • i.v.p.’s • b.v.p.’s • To solve p.d.e.’s • To integrate functions • Many of these techniques may have to be used to solve a single problemTranslate to a system of equations and then solve: The difference of two complementary angles is 80 degrees. Find the measures of the angles. Answer Example 4.3.13 Translate to a system of equations and then solve: Two angles are supplementary. The measure of the larger angle is twelve degrees less than five times the measure of the smaller angle. the_lewdrex Here are the five basic steps to formulate a research problem: Identify the broad research area: Begin your research by identifying a broad research area based on your interest, specialty, profession, expertise, and knowledge. This area must possess some kind of significance regarding your knowledge interest and specialty.Several mathematical formulations for the joint order picking problem (JOPP) in low-level picker-to-part warehousing systems are introduced, demonstrating the … www newegg com region that satisfies all of the linear inequalities. The best way to solve a system of linear inequalities is to use the graphical method discussed in earlier sections. When solving a system of linear inequalities graphically we will follow these steps: 1. Solve the inequality for y. 2. Treat the inequality as a linear equation and graph the ... CCSS.Math.Content.HSA-REI.C.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. Enduring Understanding: A system of equations is a set of two or more equations in two or more variables. A linear system of equations is a set of two or more linear equations. how much does it cost to get fangs To begin solving this situation, you developed the following system of equations: Let g = number of games rented, and let m = number of movies rented. g + m = 12 4.50g + 3.99m = 49.92 You are now ready for the next steps in solving the system of equations. 1. Step 4: Complete the table, and then use it to solve the system of equations.Jan 30, 2023 · Combinations of executives and purpose-built AI systems will soon work together to enhance decision making, problem solving and strategy formulation. Strategic thinking has long been viewed as essential for leaders of organizations. The ability to anticipate and plan for the future, to think critically and creatively about complex problems, and ... Sun Mon Tue Wed Thu Fri Sat; consensual spanking erotic movies. v2fly apkPearson yandy diaz statcast -5- Methods have been developed for efficently formulating and solving systems of non-linear equations which commonly arise in the synthesis of spatial mechanisms. It is believed that the theories developed under the sponsorship of this grant have greatly expanded the utility of spatial mechanisms in two important ways.CCSS.Math.Content.HSA-REI.C.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. Enduring Understanding: A system of equations is a set of two or more equations in two or more variables. A linear system of equations is a set of two or more linear equations.Here are the steps to follow when formulating a study problem. Your problem statement should define the objectives of your study. That way, you can use it as your guide for conducting and developing meaningful and practical research. Research objectives should be manageable to ensure a relevant study. teans escort image.jpg - Topic 19: Formulating and solving systems 145... Doc Preview Pages 1 West Jefferson High School, Harvey MATH math DrOwlMaster735 01/10/2023 End of preview Upload your study docs or become a member. View full document Become a Member Get access to this page and additional benefits: Access to our library of course-specific study resourcesy=mx+b. In this equation, 'm' is the slope and 'b' is the y-intercept. To graph a line from a slope-intercept equation, take the value of the slope and put it over 1. For example, if the slope was 5, the slope would be 5/1. Next graph the y-intercept, take the number that is the y-intercept, and graph that number on the graph. sony wh 1000xm4 won't connect to iphone The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs. Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience!-5- Methods have been developed for efficently formulating and solving systems of non-linear equations which commonly arise in the synthesis of spatial mechanisms. It is believed that the theories developed under the sponsorship of this grant have greatly expanded the utility of spatial mechanisms in two important ways.region that satisfies all of the linear inequalities. The best way to solve a system of linear inequalities is to use the graphical method discussed in earlier sections. When solving a system of linear inequalities graphically we will follow these steps: 1. Solve the inequality for y. 2. Treat the inequality as a linear equation and graph the ...Explore the concept of solving systems of equations by graphing with your class. They use the graphing calculator to solve systems of equations. mcdonald's e restaurant Jul 28, 2021 · Starting with our A, X, and B matrices in the matrix equation below, we are looking to solve for for values of the unknown variables that are contained in our X matrix. [A][X] = [B] For a scalar equation, we would simply do this by dividing both sides by A, where the value for X would be B / A. This chapter covers section 3.11 Robotics, Artificial Intelligence and Expert Systems of the ITGS syllabus, with links to other sections including 1.1 Reliability, 1.11 People and Machines, 3.1 Hardware, 3.2 Software, and each of. arrogant zodiac signs In total, there are a How many bicycles and how many tricycles ara in 139 Topic 19: Formulating and solving systems Part : Using whatever method you would like (for example, guess-and-check or logical thinking), solve each system below. In he last column, check that your solution makes both equations in the system true.assets.pearsonschoolapps.comA solution to a system of three equations in three variables (x,y,z), ( x, y, z), is called an ordered triple. To find a solution, we can perform the following operations: Interchange the order of any two equations. Multiply both sides of an equation by a nonzero constant. Add a nonzero multiple of one equation to another equation.Answer. Recall that a family of solutions includes solutions to a differential equation that differ by a constant. For exercises 48 - 52, use your calculator to graph a family of solutions to the given differential equation. Use initial conditions from \ ( y (t=0)=−10\) to \ ( y (t=0)=10\) increasing by \ ( 2\). orlando houses for sale SENIOR INFORMATION SYSTEMS ANALYST. UC San Diego SENIOR INFORMATION SYSTEMS ANALYST Salary Range: $100,000 - $115,000 /year Hybrid work will be considered. DESCRIPTION UC San Diego is ranked the 9th best public university in the nation by U.S. News and World Report and is the largest employer based in San Diego County.We're going to investigate writing and solving systems of equations. Below is an example of a two equation, two variable system. t + m = 2. 10 3 t + 3 m = 5. 15 While you can solve a problem like the one above by using graphs, tables, and algebraic methods, we're first going to concentrate on translating words into a system of equations.D09D4FD3-1C1A-49A4-89FB-136976490F3B.jpeg - - Tanin An Topic 19: Formulating and solving systems LESSON 4: HOMEWORK Notes or additional instructions | Course Hero D09D4FD3-1C1A-49A4-89FB-136976490F3B.jpeg - - Tanin An... School No School Course Title AA 1 Uploaded By MagistratePrairieDog2910 Pages 1 This preview shows page 1 out of 1 page.30 Jun 2020 ... Updated: June 30, 2020. Algebra I. Topic. Number of. Lessons. Additional Notes. Week 23-24. 19: Formulating and solving systems. 9 lessons. lexi2legit video Two systems of equations are equivalentif they have the same solution set. theorem 1 Possible Solutions to a Linear System The linear system ax +by=h cx +dy=k must have (A) Exactly one solution Consistent and independent or (B) No solution Inconsistent or (C) Infinitely many solutions Consistent and dependent There are no other possibilities.Lesson 19.2: Solving systems of linear equations using number sense Lesson 19.3: Modeling with systems of linear equations Lesson 19.4: Solving systems of …22 Mar 2020 ... Topic 2: Solving Linear Equations and Inequalities . ... 19. 12. 1. 4. Linear regression equation: y 5 21.91x 1 59, r 5 20.9968 ... seven deadly sins pfp CCSS.Math.Content.HSA-REI.C.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. Enduring Understanding: A system of equations is a set of two or more equations in two or more variables. A linear system of equations is a set of two or more linear equations. nerd emoji meme template Answer. Recall that a family of solutions includes solutions to a differential equation that differ by a constant. For exercises 48 - 52, use your calculator to graph a family of solutions to the given differential equation. Use initial conditions from \ ( y (t=0)=−10\) to \ ( y (t=0)=10\) increasing by \ ( 2\).Therefore, a problem-solving agent is a goal-driven agent and focuses on satisfying the goal. Steps performed by Problem-solving agent. Goal Formulation: It is the first and simplest step in problem-solving. It organizes the steps/sequence required to formulate one goal out of multiple goals as well as actions to achieve that goal.Writing linear equations using the point-slope form and the standard form. craigslist schererville in Problem solving consists of using generic or ad hoc methods, in an orderly manner, for finding solutions to problems. Some of the problem-solving techniques developed ...assets.pearsonschoolapps.comTopic 19: Formulating and solving systems 1 LESSON 5: HOMEWORK Notes or additional instructions based on whole-class discussion of homework assignment: Complete all the steps of the process to solve these systems of equations problems. Show all of your work for each problem. If you need additional space, use notebook paper.Context: Cancer and chronic disease prevention and screening (CCDPS) guidelines are not consistently applied in primary care. Furthermore, while most patients have multiple risks and conditions, guidelines are focused on a specific disease or organ system. The BETTER program (Building on Existing Tools to Improve Chronic Disease Prevention and Screening in Primary Care) involves an evidence ... por n hub