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polet [3.4K]
3 years ago
14

The price of a dress is reduced by 25​%.When the dress still does not​ sell, it is reduced by 25​% of the reduced price. If the

price of the dress after both reductions is ​$18​, what was the original​ price?The price of a dress is reduced by 25​%.When the dress still does not​ sell, it is reduced by 25​% of the reduced price. If the price of the dress after both reductions is ​$18​, what was the original​ price?
Mathematics
1 answer:
fredd [130]3 years ago
8 0
18= (d - 0.25d) - 0.25d
18= 0.75d - 0.25d
18= 0.50d
d = 36

the original price was $36
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Step-by-step explanation:

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4

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3 years ago
Please show work and solve it! 100 points! n(n-7)=0
Dmitriy789 [7]
Step by step. :)


STEP
1
:
Equation at the end of step 1
0 - 7n • (n - 7) = 0
STEP
2
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Equation at the end of step 2
-7n • (n - 7) = 0
STEP
3
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Theory - Roots of a product
 3.1    A product of several terms equals zero. 

 When a product of two or more terms equals zero, then at least one of the terms must be zero. 

 We shall now solve each term = 0 separately 

 In other words, we are going to solve as many equations as there are terms in the product 

 Any solution of term = 0 solves product = 0 as well.
Solving a Single Variable Equation:
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Divide both sides of the equation by 7:
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Solving a Single Variable Equation:
 3.3      Solve  :    n-7 = 0 

 Add  7  to both sides of the equation : 
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This is what i got! if i’m wrong i’m so sorry
but i tried. have a amazing day☺️☺️
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2 years ago
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