Martin-Gay, Beginning Algebra, 5ed 22 Strategy for Problem Solving General Strategy for Problem Solving 1Introduction: Understand the problem by: Read.

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Presentation transcript:

Martin-Gay, Beginning Algebra, 5ed 22 Strategy for Problem Solving General Strategy for Problem Solving 1Introduction: Understand the problem by: Read and reread the problem Choose a variable to represent the unknown Construct a drawing, whenever possible 2.Body: Translate the problem into an equation and solve the equation 3.Conclusion: Interpret your result State your conclusion

Martin-Gay, Beginning Algebra, 5ed 33

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88 Find the area of the trapezoid. Find the volume of the right circular cylinder.

Martin-Gay, Beginning Algebra, 5ed 99

10 It is often necessary to rewrite a formula so that it is solved for one of the variables. This is accomplished by isolating the designated variable on one side of the equal sign.

Martin-Gay, Beginning Algebra, 5ed 11 Example Divide both sides by mr.Simplify right side. Solve for n.

Martin-Gay, Beginning Algebra, 5ed 12 Solving Equations for a Specific Variable 1.Multiply to clear fractions. 2.Use distributive property to remove grouping symbols. 3.Combine like terms to simplify each side. 4.Get all terms containing specified variable on the same side, other terms on the opposite side. 5.Isolate the specified variable.

Martin-Gay, Beginning Algebra, 5ed 13 Example Solve for T. Subtract P from both sides. Simplify right side. Divide both sides by PR. Simplify right side.

Martin-Gay, Beginning Algebra, 5ed 14 Solve for the indicated variable.