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3 years ago

PLEASE HELP!!

Mathematics

1 answer:

grin007 [14]3 years ago

3 0

Answer:

The difference of squares identity can be written:

−

(

−

)

(

)

We can complete the square and use this with

(

−

)

and

√

as follows:

−

(

−

)

−

(

√

)

(

−

)

−

√

)

(

−

)

√

)

(

−

√

)

(

−

√

)

Hence:

√

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At the start of the month, Jodie had sold 885 copies of her new book. At the end of the month, she had sold 1,364 copies of her

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Approximately $ 31419 profit is earned from selling books in entire month

Solution:

Given that Jodie had sold 885 copies of her new book

At the end of the month, she had sold 1,364 copies of her book

We have to determine the profit earned in the entire month

From given information,

Start of month sale = 885 copies

End of month sale = 1364 copies

Total copies of books sold = Start of month sold + end of month sold

Total copies of books sold = 885 + 1364 = 2249

Also given that each book profit is $ 13.97

Profit of 1 book = $ 13.97

Therefore for 2249 books, profit earned is given as:

Profit of 2249 books = $ 13.97 x 2249 = 31418.53

Therefore approximately $ 31419 profit is earned from selling books in entire month

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Answer:

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Based on this, in order to solve the first exercise and the second exercise, we can write the following expressions and solve for "x":

First exercise:

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