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stich3 [128]
3 years ago
8

Maria bought a blouse on sale for 20% off. The sale price was $28.76. What was the original price? Write an equation to model th

e situation and solve it
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0
(28.76*.2)+28.76=?
5.752+28.76=34.512
Round to the nearest tenth- $34.51
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<h3>The lateral area for the pyramid with the equilateral base is 144 square units</h3>

<em><u>Solution:</u></em>

The given pyramid has 3 lateral triangular side

The figure is attached below

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<em><u>Find the perpendicular</u></em>

By Pythagoras theorem

hypotenuse^2 = opposite^2 + adjacent^2

Therefore,

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\text{ Area of 1 lateral triangle } = \frac{1}{2} \times opposite \times base

\text{ Area of 1 lateral triangle } = \frac{1}{2} \times 8 \times 12\\\\\text{ Area of 1 lateral triangle } = 48

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3 x 48 = 144

Thus lateral area for the pyramid with the equilateral base is 144 square units

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