During a sale, a dress is marked down form a selling price of $90 to a sale price of $81. What is the percent of markdown?
1 answer:
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Answer:
Step-by-step explanation:
Calculate the distance d using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 1, 4) and (x₂, y₂ ) = (6, - 2)
d =
=
=
= ← exact distance