Algebra 1 2-7 Guided Practice: Solving Proportions
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by Matthew Richardson
| 9 Questions
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Solve It! You are making beaded necklaces, using a pattern in which 2 large red beads are followed by 3 small blue beads. Each set of 5 beads adds 1.25 in. to the length of the necklace. How many of each color bead will you need for a 20-in necklace?
12 red & 16 blue
16 red & 24 blue
32 red & 48 blue
48 red & 64 blue
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Explain your answer.
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Vocabulary: Define ratio in your own words.
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Vocabulary: Define proportion in your own words.
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Problem 1 Got It? What is the solution of the proportion?

6.5
8.75
7.14
5.6
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Problem 2 Got It? What is the solution for the proportion?

5
9/5
3/15
5/9
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Problem 2 Got It? Would you rather use the Cross Products Property or the Multiplication Property of Equality (to multiply the numerator and denominator of at least 1 ratio by the same number) to solve the proportion? Explain.

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Problem 3 Got It? What is the solution of the proportion?

5
-1
1
-5
9
10
Problem 4 Got It? An 8-oz can of orange juice contains about 97 mg of vitamin C.
About how many milligrams of vitamin C are there in a 12-oz can of orange juice?
10.63 mg
0.99 mg
64.67 mg
145.5 mg
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