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hope10079
20.02.2021 •
Mathematics
PLEASE HELP ME ON THIS PROBLEM
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Ответ:
DB!
Step-by-step explanation:
a)![(x+50)^{2} = x^{2} +100x+2500](/tpl/images/1132/7634/3d290.png)
b) Plug the value in!![(15+50)^{2} = 65^{2} = 4225](/tpl/images/1132/7634/1c0db.png)
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Ответ:
Original price of a phone = $42000.
Tax on phone = 2%.
so, Cost price = Original price + tax% deduction
= $129.99 + 2% of $129.99
= $129.99 + 2/100 × 129.99
= $129.99 + 1.2999 × 2
= $129.99 + $2.59
= $132.58.