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engagement challengeswith Mojo. using Elimination. Steps:. 1. Place both equations in Standard Form, A. x . + B. y . = C.. 2. Determine which variable to eliminate with Addition or Subtraction.. 3. Solve for the variable left.. a 3-hour workshop. Many thanks for creating . blackboxes. Alex . Rotaru. Oana. . Olanuta. Cosmin. Manta Marian. Oana. . Casapu. Dolly . Pente. Levi . Balint. Alexandra . Cimpean. Raluca. . Popa. Anca. 2. X + 2Y = 7 Solve for Y. -X. - X. 2Y = 7 – X. 2. 2. Y = 7 – X. . 2. Y = 7 . -. X. . 2. Y = -½X + 3½. 1. -2X + 3Y = 6 Solve for Y. +2X. + 2X. 3Y = 6 + 2X. Recall from JC maths / science:. Speed and distance are scalars. We use the vector versions, velocity (. ) and displacement (. ):.  . 1. Solve Problems About Linear Motion. only works for constant (or average) velocity.. Thinking about effectiveness. Sandra Doty. Ohio University Lancaster. SOS-AAPT Fall 2014. Does an ability to do the steps of a problem solving strategy correlate with success in problem solving?. Almost every introductory physics textbook includes a problem solving strategy intended to . Find the roots:. 1) x. 2. – 64 = 0 . 2) 8x. 2. – 64x = 0. 3) x. 2. – 16x + 64 = 0. 1) Ensure the quadratic equation is set to zero.. 2) Factor the quadratic equation (GCF, perfect square binomial [DOTS], trinomial). Chapter 3.8. Square Matrix. Although a matrix may have any number of rows and columns, . square matrices. have properties that we can use to solve systems of equations. A square matrix is one of the form . What does solving a system mean?. In yesterday’s homework, we investigated Cool Copy Company and Bountiful Brochures. . What happened when you graphed the lines?. The lines intersected.. What does that intersection mean?. Radioisotopes decay in a . predictable. way. The time is takes for half of a sample to decay is called the . half life . for the isotope.. Every radioactive element has a unique half-life. C-14 is . What . is the absolute value of 15? . What . is the sum of −4 (−10)? . In . what direction does the arrow point on a number line for a negative number? . What . is an additive inverse of 5? What is the additive inverse of −9? What is the additive inverse of a number? . What We Will Learn. Complete the square. Solve by completing the square. Needed Vocab. Completing the square:. adding a constant to an expression to turn into a perfect square trinomial. Ex. 1 Completing the Square. 9/8: Warm Up Record your answer here: You can find the net force F on an object by using the formula F = ma “m” is the mass of the object in kilograms “a” is its acceleration (meters  . Warm – up #7. 1. . 3x + 1 = 8 or 3x + 1 = - 8. . -1 -1 - 1 -1. . 3x = 7 3x = -9. . 3 3 3 3. . x = . or x = -3.  . Warm – up . #7 . Solutions. 2. . +2 +2. Differential Equations. In this class we will focus on solving ordinary differential equations that represent the physical processes we are interested in studying. With perhaps a few exceptions the most complicated differential equation we will look at will be second order, which means it will look something like.