Lesson 4 Menu : Lesson 4 Menu Five-Minute Check (over Lesson 11-3)
Main Ideas
California Standards
Example 1: Divide by Fractions
Example 2: Expression Involving Polynomials
Example 3: Real-World Example
Lesson 4 MI/Vocab : Lesson 4 MI/Vocab Divide rational expressions. Use dimensional analysis with division.
Lesson 4 CA : Lesson 4 CA Standard 13.0 Students add, subtract, multiply, and divide rational expressions and functions. Students solve both computationally and conceptually challenging problems by using these techniques. (Key)
Lesson 4 Ex1 : Lesson 4 Ex1 Divide by Fractions Simplify. Divide by common factors 5, 6, and x. Answer:
Lesson 4 Ex1 : Lesson 4 Ex1 Divide by Fractions Factor 3m + 12.
Lesson 4 Ex1 : Lesson 4 Ex1 Divide by Fractions Simplify. The GCF is m + 4. Answer:
Slide 7 : A
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Slide 8 : A
B
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D
Lesson 4 Ex2 : Lesson 4 Ex2 Expression Involving Polynomials Factor q2 – 11q – 26.
Lesson 4 Ex2 : Lesson 4 Ex2 Expression Involving Polynomials Simplify. The GCF is q – 13. Answer:
Slide 11 : A
B
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D
Lesson 4 Ex3 : Lesson 4 Ex3 AVIATION In 2005, Steve Fossett piloted a jet aircraft named GlobalFlyer around the world nonstop without refueling. The trip took 67 hours and covered a distance of 36,811 kilometers. What was the speed of the aircraft in miles per hour? Round to the nearest mile per hour. (Hint: 10 km = 6 mi) Use the formula for rate, time, and distance. Divide each side by 67 hours. rate ● time = distance t = 67 hours, d = 36,811 km r = 36,811 km ÷ 67 hours rt = d r ● 67 hours = 36,811 km
Lesson 4 Ex3 : Lesson 4 Ex3 Answer: Thus, the jet went 330 miles per hour. Express as a unit rate. Multiply by the reciprocal. Convert kilometers to miles. Multiply.
Slide 14 : A
B
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D A. 350 mph
B. 343 mph
C. 571 mph
D. 500 mph Suppose the GlobalFlyer traveled 40,000 kilometers in 70 hours. What would the speed of the aircraft be in miles per hour? Round to the nearest mile per hour.
End of Lesson 4 : End of Lesson 4