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natulia [17]
3 years ago
15

|(a + b)x + y = 4 |x + (a - b)y + 10

Mathematics
1 answer:
leonid [27]3 years ago
4 0

I don't know the answer but try using PEMDAS. (Parentheses, Exponents, Multiplication, Division, Addition, and then Subtraction)

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An item is regularly priced at $27. Jose bought it on sale or 45% off the regular price
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linear

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3 years ago
The price of a notebook is 20% less than the price of a book. By what percent is the price of the book higher than the price of
TiliK225 [7]

The price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.

<h3>What is the percentage?</h3>

It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.

Let x is the price of the book

And y is the price of the notebook,

Then,

y = x- 0.20x = 0.80x

x = (1/0.80)y

x = 1.25y

So x is 1.25 or 125% higher than the, y

Thus, the price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.

Learn more about the percentage here:

brainly.com/question/8011401

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