PPT-Expressions, equations, formulae & identities

Can you explain what these key words mean Can you give an example for each one 2 a 3 b c is an expression is an equation is a formula is an identity Expression An expression is made up of . You should know this for the quiz!. Empirical and Molecular Formulae. Empirical Formula. If needed, change % to g.. Do . a molar conversion to change from . g. mol. Divide each of these numbers by the smallest number. Jami . Wang. . Period 3. Extra Credit PPT. Pythagorean Identities. sin. 2 . X + cos. 2 . X = 1. tan. 2. X + 1 = sec. 2. X. 1 + cot. 2. X = csc. 2. X. These . identities can be used to help find values of trigonometric functions. . *E*%*%*H"** %R*$R*E*D"***:@)02/+IR*303-I9)R*30@*5I02()5/9)*8)-)?302*)K2)803-*8)5,68=)5*2,*B,5)*,8*5,-?)*B8,4-)75"*%*ER*T*"#$%! $R*E*MAB)=/+/=*235*7,@)-5*38)*@)-/0)32)@*/0*2()*/2)7*5B)=/+/=32/,05*3?3/ equations and formulae. Equations and formulae are used in Physics, Chemistry and Biology. Sometimes you will need to rearrange them to work something out.. To rearrange them, you need to understand what they mean.. Objectives. To learn how to work out the percentage composition by weight of a compound. To use percentage composition to work out empirical formulae. Percentage compositions. This means what percentage of each element is present in a compound, and therefore tells you what masses of each element are present in any given mass of a compound. . TeacherTwins©2014. Warm Up. 1). Solve the following expression . . for x = -16 and y=9. 2). Evaluate.. a). . b). . . c). . d). . 3). While playing football Paul’s team gained 5 yards on the first play, . These slides can be used as a learning resource for students. . Some answers are broken down into steps for understanding and some are “final answers” that need you to provide your own method for.. Section 5.4. Double-Angle Identities. Proving the first of these:. Power-Reducing Identities. Guided Practice. Prove the given identity.. Guided Practice. Prove the given identity.. Guided Practice. Prove the given identity.. The Mole. REVISION. Formulae tell you how many of each atom are in a molecule.. Different atoms have different masses.. Level 4. NEW LEARNING. Formulae and balanced equations. Formula Mass and the mole. Evaluate and simplify algebraic expressions by substituting and using order of operations.. How to…. You will need to translate words into mathematical operations. . What are some words or phrases for:. G671. Learning Objectives. Individually. Briefly write down what you think the differences are between . race, ethnicity . and . nationality.. Ext: - Give examples for each.. Race, Ethnicity & Nationality. We have already discussed a few example of trig identities. All identities are meant to serve as examples of equality. Convert one expression into another. Can be used to verify relationships or simplify expressions in terms of a single trig function or similar. NC Math 31North Carolina Standard Course of StudyNorth Carolina Math 3Standards for Mathematical Practice1Make sense of problems and persevere in solving them2Reason abstractly and 3Construct viable a HEALTH and CONSUMER PROTECTION DIRECTORATE-GENERAL Directorate C - Scientific Opinions C2 - Management of scientific committees; scientific co-operation and networks Scientific Committee on Food SCF/C