3 years ago

The price of a jeans was reduced $6 per week for 7 weeks. By how much did the price of the jeans change over the 7 weeks?

Mathematics

2 answers:

ad-work [718]3 years ago

8 0

6•7=42, so the price changed $42 in 7 weeks.

kompoz [17]3 years ago

4 0

It was reduced by $42.00 by the end of the seven weeks.

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$-9(\frac{2}{3}x) + 9(1)\\ \\-6x + 9$

Explanation:

Before we begin, remember the following rules:

1- Distribution property:

$a(b+c) = ab+ac$

2- Simplification of fractions:

$\frac{xy}{yz}=\frac{x}{z}$

3- Signs in multiplication:

+ve * +ve = +ve

-ve * -ve = +ve

+ve * -ve = -ve

Now, for the given problem, we have:

$9 (\frac{2}{3}x + 1)$

Starting with the distributive property:

$-9 (\frac{2}{3}x +1) = -9(\frac{2}{3}x) - (-9)(1) = -9(\frac{2}{3}x) + 9(1)$

..................>This corresponds to option 1

Now, we simplify the output from the above step:

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................> This corresponds to option 5

Hope this helps :)

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3 years ago

Read 2 more answers