gypsybrio1512
26.08.2020 •
Mathematics
Which of the following is equivalent to (2a2-6ab2+4b2)-(-a2+2ab-2b2
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Ответ:
Step-by-step explanation:
2a^2 - 6ab^2 + 4b^2 + a^2 - 2ab + 2b^2
3a^2 - 6ab^2 + 6b^2 - 2ab
Ответ:
$27.25
Step-by-step explanation:
Selling price of dress after discount = 52 - 5.2 = $47.8
So, cost of skirt after discount = 70 - 47.8 = $22.2
SO, original price of skirt :
80x/100 = 22.2
80x = 2220
x = 27.25
Hope this helps