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DO NOW Copy down your homework: 2-9 Lesson Check on page 141
Warm-up: The figures are similar. Identify the corresponding sides and angles.
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HW Questions?
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Quiz Review The figures are similar. Identify the corresponding sides and angles.
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Quiz Review The figures are similar. Find the missing length.
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Quiz review The scale of a map is 1 cm : 15 km. Find the actual distance if the map distance is 4.6 cm.
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Quiz review A 8-ft tall flagpole stands next to a building. The shadow of the flagpole is 14 ft and the shadow of the building is 40 ft. What is the height of the building? Hint: draw a picture
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Quiz Review Charlotte and Nowhereville are miles apart. On a map, the distance between the two towns is 4.5 in. What is the scale of the map?
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Quiz Time!
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2-9 Percents
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Table of contents 1 Page # topic date
? Solving One-Step Equations 2/11/15 ? 2-2 Solving Two-Step Equations 2/12/15 ? 2-3 Solving Multi-Step Equations 2/17/15 ? Solving Equations with 2/18/15 Variables on Both Sides ? 2-5 Literal Equations and Formulas 2/19/15 ? Ratios, Rates & Conversions ? Solving Proportions ? 2-8 Proportions & Similar Figures ? 2-9 Percents 1
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Find the percent using a proportion.
What percent of 56 is 42?
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You try. Find the percent using a proportion.
What percent of 90 is 54?
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Find the percent using the percent equation.
What percent of 40 is 2.5?
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You try. Find the percent using the percent equation.
What percent of 84 is 63?
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Now, let’s check with a proportion.
What percent of 84 is 63?
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Finding a part A dress shirt that normally costs $38.50 is on sale for 30% off. What is the sale price of the shirt?
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You try! A family sells a car to a dealership for 60% less than they paid for it. They paid $9000 for the car. For what price did they sell the car?
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Finding a base 125% of what number is 17.5?
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You try 30% of what number is 12.5? Solve by using an equation AND by using a proportion.
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Fraction equivalents for common percents memorize these!!!
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Use the simple interest formula
I=PRT Use the simple interest formula You deposited $840 in a savings account that earns a simple interest rate of 4.5% per year. You want to keep the money in the account for 4 years. How much interest will you earn? Check your answer to see if it is reasonable.
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You try – use the simple interest formula
You deposited $125 in a savings account that earns a simple interest rate of 1.75% per year. You earned a total of $8.75 in interest. For how long was your money in the account?
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