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Masteriza [31]
3 years ago
12

The price of an item has dropped to $52 today. Yesterday it was $80. Find the percentage decrease.

Mathematics
2 answers:
saveliy_v [14]3 years ago
6 0

Answer:

Decrease = 140 - 119 = 21

% Decrease = (21/140)*100% = 15%

Step-by-step explanation:

hope this helps!

Mars2501 [29]3 years ago
5 0

Answer:

56%

Step-by-step explanation:

80-52/80

0.56

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Step-by-step explanation:

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The (scale) factor by which the base and the height of the triangle are multiplied = 5/4

By the constant proportion of their sides, the triangle before and the triangle obtained after the multiplication are similar

Let 'a' and 'b' represent the length of the base and the height of the triangle respectively, we have;

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With the application of the scale factor of 5/4, we have;

The area of the scaled triangle, A₂ = 1/2 × (5/4) × a × (5/4) × b = (5/4)² × a·b/2

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