'Write original equation' diaporamas de présentation

PHYS 2401.04: Physics Science & Engineer I

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Preparation for Calculus

P. Preparation for Calculus. P.1. Graphs and Models. The Graph of an Equation. The Graph of an Equation.

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3.2 Solve Two-Step Equations

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Standard 8

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10.3

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EXAMPLE 1

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Do Now 10/14/09

Do Now 10/14/09. Take out HW from last night. Textbook p.179-181 #4-36 even Copy HW in your planner. Textbook p. 187 #4-30 even “Pop” Quiz sections 3.5-3.8 Friday. 4) 55% 6) 51 8) 21 10) 44% 12) 27 14) 176.3 16) 210 18) 137.5 20) p% should be multiplied by 95; p% = 20%

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Chapter 4.5 Solve Quadratic Equations by Finding Square Roots

Chapter 4.5 Solve Quadratic Equations by Finding Square Roots. = 4. =. a. =. =. b. = 3. 7. 5. 9. 4. 6. 5. 7. 7 . 4. 2 9. 4. 16. 80. 14. 81. 14. 16. 21. =. c. 81. 16. =. 126. =. d. =. EXAMPLE 1. Use properties of square roots. Simplify the expression.

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EXAMPLE 1

100. x 2. 4 x 2. 25 x 2. 100. 25. 100. 100. =. +. y 2 4. +. = 1. EXAMPLE 1. Graph an equation of an ellipse. Graph the equation 4 x 2 + 25 y 2 = 100 . Identify the vertices, co-vertices, and foci of the ellipse. SOLUTION. STEP 1.

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EXAMPLE 1

100. x 2. 4 x 2. 25 x 2. 100. 25. 100. 100. =. +. y 2 4. +. = 1. EXAMPLE 1. Graph an equation of an ellipse. Graph the equation 4 x 2 + 25 y 2 = 100 . Identify the vertices, co-vertices, and foci of the ellipse. SOLUTION. STEP 1.

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Slope-Intercept From 3

Slope-Intercept From 3. Goal. Given a table of data , find an equation of the line in the y= mx+b form. Step 1. Write original equation: y= mx+b. Step 2. Find the slope. Pick two points and plug them into. Step 3. Plug the slope in for m into y= mx+b. Step 4.

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Solving Multiplication and Division Equations

Solving Multiplication and Division Equations. 3 x = 45. 3. 3. ?. 45 = 45. 3 ( 15 ) 45. =. EXAMPLE 1. Solving a Multiplication Equation. 3 x = 45. Solve the equation. 3 x = 45. Write original equation. Divide each side by 3. x = 15. Simplify.

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Find the product

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Solve a two-step equation by combining like terms

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EXAMPLE 2

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Write decimal as percent.

a. = p % b. 51. = p % 136. = p %. 0.375. 37.5. = p %. 51 is 37.5% of 136. ANSWER. EXAMPLE 2. Find a percent using the percent equation. What percent of 136 is 51?. Write percent equation. Substitute 51 for a and 136 for b. Divide each side by 136.

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EXAMPLE 1

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EXAMPLE 3

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EXAMPLE 5

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Standardized Test Practice

3. Raise each side to the power. 2. EXAMPLE 3. Standardized Test Practice. SOLUTION. 4 x 2/3 = 36. Write original equation. x 2/3 = 9. Divide each side by 4. ( x 2/3 ) 3/2 = 9 3/2. x = 27. Simplify. ANSWER. The correct answer is D. 4/3. ( x + 2) 3/4. = 8 4/3.

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