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Sonbull [250]
3 years ago
13

Helppppppppppppppppppppp​

Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0

Answer:

$7.20

Step-by-step explanation:

60% of 4.5 = 2.7

4.5+2.7 = $7.2

Hitman42 [59]3 years ago
8 0

Answer:

7.2

Step-by-step explanation:

So u do 60% of 4.5 and add ur answer to 4.5

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Write three equations whose solution is x=3.5
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Answer:

  • 1. 2x + 23 = 30
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Explanation:

Work backward:

1. 2x + 23 = 30

Start:

  • x = 3.5

Multiply the equation by 2:

  • 2x = 2 (3.5)
  • 2x = 7

Subtract 30 from both sides

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  • 2x - 30 = -23

Add 23 and 30 to both sides:

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2. 3x + 19.5 = 30

Start:

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Add 6.5 to both sides:

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Multiply by 3:

  • 3(x + 6.5) = 30

Distributive property:

  • 3x + 19.5 = 30

3. (10x - 20)/ 5 = 3

Start:

  • x=3.5

Multiply by 10:

  • 10x = 35

Subtract 20:

  • 10x - 20 = 15

Divide by 5:

  • (10x - 20)/ 5 = 15/5

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Step-by-step explanation:

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