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Nastasia [14]
3 years ago
11

Multi step equation that equals -1

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0

5(x + 3) - 3(x - 2) = 19      That should give you the result you need. The answer will come out to be x = - 1

If you want it to be - 1 to start with, then

2(5x + 3) - 13x + 2 = - 1

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Mr. Wayne sells calculators. He marks up every item with a profit of 25%. Let x be his cost for a calculator. A. Write an expres
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Answer:

Step-by-step explanation:

%profit = selling price - cost price/cost price * 100

If Mr. Wayne marks up every item with a profit of 25% and x be his cost for a calculator, the expression for the selling price can be gotten by substituting the parameters into the formula;

25 = sp-cp/cp * 100

25/100 =  sp-x/x

0.25 = sp-x/x

cross multiply

0.25x = sp-x

add x to both sides

0.25x+x = sp-x+x

1.25x = sp

selling price = 1.25x

<em>Hence an expression for the selling price of the calculator is 1.25x</em>

<em></em>

b) If Mr wayne paid $25, the selling price is derived by substituing x = $25 into the expression in (a)

selling price = 1.25x

selling price = 1.25($25)

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selling price = 1.25x

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divide both sides by 1.25

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<em>Hence Wayne paid $68.8 for a calculator that he sells for $86.</em>

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