Mean): (sum of all numbers)/(number of numbers) Geometry Formulas Angles Sum of Interior Angles of Polygon = (n-2)(180) n = number of sides of a polygon Central Angle = 2(Inscribed Angle) Area Square: A = a2 Rectangle: A = lw Parallelogram: A = bh Trapezoid: A = .5(a+c)h‚ where a and c are the lengths of the parallel sides Circles π = pi = 3.1415 Area: A = πr2 Circumference: C = 2πr Central Angle = 2(Inscribed Angle) Area of Sector = (x/360)πr2 www.platinumgmat.com | Free GMAT
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To find the uncertainties associated with this lab we used the direct method. For the mass‚ we took our smallest weight that we added and used half of that as our uncertainty. That means that our mass had an uncertainty of ±1g. Our angle uncertainty was half of a tick mark or ±0.50ͦ. Calculations Figure 1: Free-body Diagram Figure 2: Force Diagram To find the third force we use the equation 1 or Newton’s Second Law. Since we are working with two dimensions‚ we need to do calculations
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CBSE IX | MATHEMATICS Sample Paper – 1 Solution CBSE Class IX Mathematics Term II Sample Paper - 1 Solution (SECTION – A) 1. Correct Answer: C Graph of equation x = k is parallel to the y-axis. 2. Correct Answer: B As this data will be available through some agency only and will not be collected by the student himself‚ it is known as secondary data. 3. Correct Answer: A The positive solutions of the equation ax + by + c = 0 always lie in the 1 st quadrant. 4. Correct Answer: C Perpendicular from
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Theodolite Adjustment The most significant errors affecting the operation of a theodolite are geometrically cancelled by recording angle readings in both direct and inverted positions. However‚ that does not negate the benefits of a well-calibrated instrument. In practice‚ many observations are made on one side only (in topographic mapping‚ for example). Also‚ with a finely-tuned instrument‚ a discrepancy in the readings will help identify other problems (e.g.‚ an unstable tripod‚ observation or
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__ WORK PROBLEMS QUIZ SHOW YOUR WORK. Final answers should be encircled with appropriate units. 1. Hans Full is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and rightwards with a force of 22.9 Newtons at an angle of 35 degrees above the horizontal to drag his backpack a horizontal distance of 129 meters to the right. Determine the work (in Joules) done upon the backpack. 2. Renatta Gass is out with her friends. Misfortune occurs and Renatta and her friends
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is a solution of 2x + ay = 8‚ then a = ____. A) 3 B) 4 C) 5 D) 2 Question 5 If a straight line falling on two straight lines makes the interior angles on the same side of it taken together less than two right angles‚ then the two straight lines‚ if produced indefinitely‚ meet on that side on which the sum of angles is less than two right angles. A) True B) False Question 6 Any point on the perpendicular
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Guidelines for Mathematics Laboratory in Schools Class X Central Board of Secondary Education Preet Vihar‚ Delhi – 110092. 1 2 1 . Introduction Taking into consideration the national aspirations and expectations reflected in the recommendations of the National Curriculum Framework developed by NCERT‚ the Central Board of Secondary Education had initiated a number of steps to make teaching and learning of mathematics at school stage activity-based and experimentation oriented
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Effective Questioning During my observation regarding effective questioning‚ I realized that the students responded to a series of questions more enthusiastically. Questioning them provided them with an opportunity to think‚ ponder upon the subject and figure out the answers on their own. This widened their understanding regarding the topic of the lesson. The teacher used a range of questions including both open and closed. * Closed Questions: Implies that the teacher has a predetermined correct
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DG4PSA_894_fm.qxd 11/1/06 11:16 AM Page i Discovering Geometry An Investigative Approach Practice Your Skills with Answers DG4PSA_894_ fm.qxd 4/28/08 7:53 PM Page ii Teacher’s Materials Project Editor: Elizabeth DeCarli Project Administrator: Brady Golden Coordinating Writer: Jennifer North Morris Contributors: David Rasmussen‚ Ralph Bothe‚ Judy Hicks‚ Michael Serra Accuracy Checker: Dudley Brooks Production Editor: Holly Rudelitsch Copyeditor: Jill Pellarin
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Questions: 1] when simplified is: [Marks:1] A. negative and irrational B. negative and rational C. positive and irrational D. positive and rational 2] The value of the polynomial x2 – x – 1 at x = -1 is [Marks:1] A. Zero B. -1 C. -3 D. 1 3] The remainder when x2 + 2x + 1 is divided by (x + 1) is [Marks:1] A. 1 B. 4 C. -1 D. 0 4] In fig.‚ AOB is a straight line‚ the value of x is: [Marks:1] A. 60° B. 20° C. 40°
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