and subtraction. The first commercially successful adding machine was developed in 1886 by William Seward Burroughs (1855-1898). The "Millionaire‚" a machine invented by Otto Steiger in 1894‚ was the first adding machine also capable of direct multiplication. | The hand-held pocket calculator was invented at Texas Instruments‚ Incorporated (TI) in 1966 by a development team which included Jerry D. Merryman‚ James H. Van Tassel and Jack St. Clair Kilby. In 1974 a basic patent for miniature electronic
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PRACTICE TEST Wonderlic Basic Skills Practice Test for Westwood College Quantitative Skills Form QS-A © 2011 Wonderlic‚ Inc. | www.wonderlic.com | 800.323.3742 Unauthorized duplication of this booklet in part‚ or in full‚ is a violation of federal law and strictly prohibited. SAMPLE QUESTIONS FOR THE Wonderlic Basic Skills Test– Quantitative Skills Form QS-A BEGIN ON THE NEXT PAGE. Correct answers are provided on the last page of this document. © 2011 Wonderlic‚ Inc. | www.wonderlic
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Variables A variable is a symbol that is used to represent an unknown quantity. For example‚ x‚ y‚ z. If x and y are variables‚ then the product xy is also a variable. Terms A term can be: a single number. For example‚ 2‚ 5. a variable‚ or a product of variables (which may be raised to powers). For example‚ z‚ b3‚ [pic]. a product of a number and one or more variables (which may be raised to powers). For example‚ 3x‚ – 4yz‚ 7a2 b3 . Coefficients In a term that is the product of a
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A Brief History of Computing - Mechanical Computing Devices © Copyright 1996-2005‚ Credit to: Stephen White Source: http://trillian.randomstuff.org.uk/~stephen//history/timeline-MECH.html#17 For reading purposes only by: Lornilo S. Alimpuangon Pictures: credit to Google Hardware History Overview • • • • • Modern computing can probably be traced back to the ’Harvard Mk I’ and Colossus (both of 1943). Colossus was an electronic computer built in Britain at the end 1943 and
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figure 16‚ the best choice of two-port parameter is the ABCD-parameters. The a-parameters of the combined network are found by matrix multiplication of the two individual a-parameter matrices. A chain of n two-ports may be combined by matrix multiplication of the n matrices. To combine a cascade of b-parameter matrices‚ they are again multiplied‚ but the multiplication must be carried out in reverse order‚ so that; Example Suppose we have a two-port network consisting of a series resistor R followed
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CHAPTER 1 1.1 INTRODUCTION Data that can be read and understood without any special measures is called plaintext or cleartext. Here Plain image is converted as Plaintext.The method of disguising plain image in such a way as to hide its substance is called encryption. Encrypting plain image results in unreadable gibberish called cipher image. You use encryption to ensure that information is hidden from anyone for whom it is not cipher image to its original plain image is called decryption. Figure
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Centre For Foundation Studies Department of Sciences and Engineering FHMM1014 Mathematics I Chapter 1 Number and Set FHMM1014 Mathematics I 1 Content 1.1 Real Numbers System. 1.2 Indices and Logarithm 1.3 Complex Numbers 1.4 Set FHMM1014 Mathematics I 2 1.1 Real Numbers FHMM1014 Mathematics I 3 Real Numbers • Let’s review the types of numbers that make up the real number system. FHMM1014 Mathematics I 4 Real Numbers i). Natural numbers (also called positive integers). N = {1‚ 2‚ 3
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The Nuclear Reactor Core Basic Principles Wang Ming ( 2012380022) (Filippo Fiori) Contents 1 Introduction 6 1.1 The Qualification Process 6 1.2 The Objective: the On-Transient Qualification by “CNA2 Scaled Calculations” 9 1.3 Structure of the Report 10 2 Facility description 11 3 Test description 11 4 Scaling approach 12 5 CNA2 scaled nodalization 16 5.1 Reference CNA2 Input 16 5.2 Common Features of CNA2 Scaled Nodalization 22 5.2.1 Atucha-2 Scaled Nodalization with Moderator System
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More important identities You don’t have to know all the identities off the top of your head. But these you should. Defining relations for tangent‚ cotangent‚ secant‚ and cosecant in terms of sine and cosine. |tan t = |sin t | |cot t = |1 |= |cos t | | |[pic] | | |[pic] | |[pic] | | |cos t | | |tan t | |sin t | |sec t = |1 | |csc t = |1 | | | | |[pic]
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Name:David B. Victorioso Year/section:IV-Acacia Date:Saeptember 16‚2013 Teacher:Mrs.Noceda Age Problem Problem 1 An eagle is 4 times as old as a falcon. Three years ago‚ the eagle was 7 times as old as the falcon. Find the present age of each bird. Solution x = falcon’s age now 4x = eagle’s age now {the eagle is 4 times as old as falcon} x - 3 = falcon’s age 3 years ago 4x - 3 = eagle’s age 3 years ago 4x – 3 = 7(x – 3) {three years ago‚ eagle
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