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3 years ago

12

Janine found a perfect sundress for 30% off. The original price, before tax, was $60. What was the sale price of the dress befor

e tax?

2 answers:

Neko [114]3 years ago

7 0

Multiply 60 by 0.30, the decimal form of 30%

prisoha [69]3 years ago

7 0

Price - 30%×price = price×(1 -0.30) = 0.70×price
= 0.70×$60 = $42

The sale price of the dress before tax was $42.

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$100\pi\int\limits^9_0 {(\sqrt y)^2(14-y)} \, dy$ ft-lbs.

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$A(y)=\pi r^2\\r\to radius\ of\ the\ cross\ section$

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Plug in all the values. This gives,

$W=100\int\limits^9_0 {\pi (\sqrt y)^2(14-y)} \, dy\\\\W=100\pi\int\limits^9_0 { (\sqrt y)^2(14-y)} \, dy\textrm{ ft-lbs}$

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