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lina2011 [118]
3 years ago
6

Does anyone know the answer to this?

Mathematics
2 answers:
ElenaW [278]3 years ago
8 0
First you have

65 (3x-10) 2x =18O
65 + 5x-10 180
55 5x -180
5x 125 x 125/5 25 X 25

B 3 (25) -10 75-10 65

C 2 (25) 50

it this is
Elis [28]3 years ago
3 0

65 + (3x-10) + 2x = 180

65 +5x-10 = 180

55 + 5x =180

5x = 125

x = 125/5 = 25


x = 25

B = 3(25)-10 = 75-10 = 65

C = 2(25) = 50

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Answer:

The single decimal multiplier used to increase by 18% followed by a  12% decrease is 0.21.

Step-by-step explanation:

Let 'x' be the number

As first the number has to be increased by 18%

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Step 1: write the percentage '18%' in decimal form

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Step 2: For percentage increases: add the decimal to 1

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Step 3: Multiply the number x by the multiplier, found in Step 2

x × 1.18 = 1.18x

<u><em>NEXT WE HAVE TO DECREASE 1.18x by 12%</em></u>

Apply the same method but with a number 1.18x

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1 - 0.18 = 0.18

  • Multiply the number 1.18x by the multiplier, found in Previous step

1.18x × 0.18 = 0.21x

Therefore, the single decimal multiplier used to increase by 18% followed by a  12% decrease is 0.21.

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