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Sav [38]
3 years ago
11

At the mall Julie finds a sale at her favorite store. Two pair of pants will cost $42. If she wants to buy 5 pair, how much will

she pay at the sale price? A) $10 B) $21 C) $105 D) $210
Mathematics
2 answers:
Dimas [21]3 years ago
7 0
Julie will pay $105....
katovenus [111]3 years ago
5 0
Divide 42 by two and then multiply by 5
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7.\\METHOD\ 1:\\\\\sqrt{7^4}=\sqrt{7^{2\cdot2}}\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=\sqrt{(7^2)^2}\\\\\text{use}\ \sqrt{a^2}=a\ \text{for}\ a\geq0\\\\=\boxed{7^2}\\\\METHOD\ 2:\\\\\text{use}\ a^\frac{m}{n}=\sqrt[n]{a^m}\\\\\sqrt{7^4}=7^\frac{4}{2}=\boxed{7^2}\\=================

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Step-by-step explanation:

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