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vodka [1.7K]
3 years ago
7

B is between A and C. AB = 3x, BC = 2x + 7, AC = 42 a) X = b)AB = c)BC=

Mathematics
1 answer:
ryzh [129]3 years ago
5 0

Answer: x=7

               ab=21

               bc=14

Step-by-step explanation:

ab=3x

bc=2x±7

ac=42

3x±2x±7=42

5x±7=42

5x=42-7

5x=35

to get the value of x you divide 35 by 5x

35÷5x=7

so the value of x is 7

ab=3x

x=7

3x=7×3x

7×3=21

x=7

2x=7×2x

2×7=14

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Answer:

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B) The value of b is <u>greater than 29</u>.

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D) The value of a in part A is equal to 29 whereas in part B the value of b is greater than 29.

Step-by-step explanation:

Solving for Part A.

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By using addition property of equality, we will add both side by 9;

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By using addition property of inequality, we will add both side by 9;

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Solving for Part D.

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