Solving Math Equations Module 4 - 616 Words

MAT101, SLP4 Revised March 2012 (Dr. Rensvold) A companys costs, in millions of dollars, are given by the equation, C = x2 3x 27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold? 1,500 items? (Hint: If the number of items sold is 1000, then x=1. C = 12 3(1) 27 C = 1.52 - 3(1.5) - 27 = 1 -3 27 = 2.25 4.5 - 27 C = -29 C = -29.25 $29 million $29,250,000 A companys costs, in millions of dollars, are given by the equation, C = x2 3x 27, where x is the number of items sold, in thousands. How many items must be sold for the costs to be zero? 0 = x2 -3x 27 3  ± (-3)2 -4(1 x -27) / 2(1) 3  ± 9+108 / 2 3  ± 117 / 2 6.9 Approximately 6,900 items An objects height, in meters, when thrown vertically from the ground at a velocity of 80 m/s is given by the equation H = -4.9t2 + 80t. Ignoring wind resistance, what is the height of the ball after 2 seconds? 3 seconds? 10 seconds? H = -4.9(2)2 + 80(2) H = -4.9(3)2 + 80(3) H = -4.9(10)2 + 80(10) -4.9(4) + 160 -4.9(9) + 240 -4.9(100) + 800 -19.6 + 160 -44.1 + 240 -490 + 800 140.4 meters 195.9 meters 310 meters An objects height, in meters, when thrown vertically from the ground at a velocity of 80 m/s is given by the equation H = -4.9t2 + 80t. Ignoring wind resistance, how many seconds will it take the object to return to the ground? In other words, when is H = 0? 0 = -4.9t2 + 80t 0 = -4.9t + 80 -80 = -4.9t t = 16.326 seconds The distance d traveled by an objectShow MoreRelatedSensing The Environment : Student Created Water Quality Sensors4449 Words   |  18 Pages Abstract (250 words) The Student Enabled Network of Sensors for the Environment using Innovative Technology (SENSE IT) program provides an infrastructure and curricula for teachers and students to learn core science, technology, engineering and math (STEM) knowledge through building, testing, programming and deploying their own environmental sensor networks. The project prepares and motivates young people for the future STEM workforce by providing: 1) a motivating, meaningful and hands-on scenarioRead MoreProduct And Program Appropriateness Of The School Of Western Governors University2125 Words   |  9 PagesCollege of Western Governors University â€Æ' Product or Program Appropriateness The product EngageNY is an ELA and math curriculum created by the New York State Education Department (NYSED). Although it is not the adopted curriculum of this evaluator’s district, it is a resource that’s being used district wide as a key supplement in mathematics. The 4th grade math curriculum consists of 7 â€Å"module† (units) ranging from 20-40 days in length. The NYSED has converted all of the components into free, downloadableRead MoreAre Video Games Bad for Children?883 Words   |  4 Pagescomprehending school modules and paying attention to teachers. However, According to a recent research conducted by scientists at the university of Michigan, children can improve their memory, problem solving, and reasoning by playing video games, which increase the probability of getting high GPA [5]. In addition, researchers at New York University and city university of New York proved that children who play math games are likely to perform better at math and ma thematical equations than other childrenRead MoreElective Mathematics Syllabus for Waec2976 Words   |  12 Pageskeys or be operated in such a way as to disturb other candidates; It must have its own self-contained batteries (rechargeable or dry) and not always be dependent on a mains supply; It must not have the facility for magnetic card input or plug-in modules of programme instructions. DETAILED SYLLABUS In addition to the following topics, harder questions may be set on the General Mathematics/ Mathematics (Core) syllabus. In the column for CONTENTS, more detailed information on the topics to be testedRead MoreMaths : Invented Or Discovered?6199 Words   |  25 Pages Maths: Invented or Discovered? Introduction: What is mathematics? What is the distinct definition for it? Something that always has bewildered me is what maths really is. Biology is the study of living organisms, chemistry is the study of chemicals, physics is the study of the universe and its forces, so what is maths the study off? Well the online Oxford Dictionary states that maths is â€Å"the abstract science of number, quantity, and space, either as abstract concepts (pure mathematics), or asRead MoreMaths : Invented Or Discovered?5065 Words   |  21 Pages Maths: Invented or Discovered? Abstract: Introduction: What is mathematics? What is the distinct definition for it? Something that always has bewildered me is what maths really is. Biology is the study of living organisms, chemistry is the study of chemicals, physics is the study of the universe and its forces, so what is maths the study off? Well the online Oxford Dictionary states that maths is â€Å"the abstract science of number, quantity, and space, either as abstract concepts (pure mathematics)Read MoreInstrumentation in Mathematics8575 Words   |  35 Pagesfor developing the basics mathematics skills of students with learning disabilities. Students were taught to solve algebraic equations using either a CRA approach or a traditional approach. The study involved 34 matched pairs of students in grades 6 and 7 who either had been diagnosed with learning disabilities or were categorized as at risk for learning problems. After a 4-week intervention, both groups showed improvement, but those taught with the CRA group significantly outperformed those who hadRead MoreInstrumentation in Mathematics8559 Words   |  35 Pagesfor developing the basics mathemati cs skills of students with learning disabilities. Students were taught to solve algebraic equations using either a CRA approach or a traditional approach. The study involved 34 matched pairs of students in grades 6 and 7 who either had been diagnosed with learning disabilities or were categorized as at risk for learning problems. After a 4-week intervention, both groups showed improvement, but those taught with the CRA group significantly outperformed those who hadRead MoreDesign Of The Games For Primary School Children3416 Words   |  14 Pagesthe game. Also, the purpose of the game and how the purpose can be achieved are discussed here. These are presented under the following sub headings: 1. How are the games structured? 2. How are the games built? 3. What are the purposes of the games? 4. How can the purposes of the games be achieved? 5. How can the games be tested? These questions tend to address how the games are built towards achieving its purposes. The questions are addressed as follows: 3.1 How are the games structured? The projectRead MoreEssay about Motivational Strategy Guidelines Based On Self-Efficacy4929 Words   |  20 Pagesperformance. Norwich (1987) found a moderate correlation between self-efficacy and previous math performance in subsequent performance (he did not, however, find that self-efficacy by itself had a significant effect). Pajares and Miller (1994) found in a study on first year university students that there was a direct relation between math self-efficacy and motivational variables such as high school experience, math performance, and self-concept. A later study by Pajares and Graham (1999) determined