Midterm One Review - Math 8A-010 Winter 2009 Midterm One Review 1 Simplify without using negative exponents All variables represent positive real

Midterm One Review - Math 8A-010 Winter 2009 Midterm One...

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Math 8A-010 Winter 2009 Midterm One Review 1. Simplify without using negative exponents. All variables represent positive real numbers. a) 1/ 482416x yzb) (1322246xyxyyxy2. Factor completely: ) 3. Perform the indicated operations and give your answers in the simplest form: a) 2aaaaa+÷b) 34221322+ 4. Solve the following equations and then determine whether the equation is an identity, a conditional equation, or an inconsistent equation: a) 21533xxx=b) 311511xxxx=+5. Solve the following word problems: a) How many gallons of 20% alcohol solution must be mixed with 10 gallons of 50% alcohol solution to obtain a new mixture of 30% alcohol solution? b) Rob has exactly $3.80 consisting of quarters and dimes. He has a total of 20 coins. How many quarters and how many dimes does he have? c) An airplane that travels 450 mph in still air encounters a 30-mph headwind. How long will it take for the plane to travel 1050 miles into the wind? +

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