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IRINA_888 [86]
3 years ago
6

A circle has circumference 27 cm. What is the area of the circle? Use 3.14 for .

Mathematics
1 answer:
ella [17]3 years ago
5 0

Circumference = 2πr = 27 cm

= 2 × 3.14 × r = 27

= 3.14 × r = 27/2

so, r = \frac{27}{2} × \frac{1}{3.14} = 4.2 cm

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The price p (in dollars) and the demand X for a particular clock radio are related by the equation X = 3000 -10p. Find and answe
alukav5142 [94]

The price p based on the equation given is p = 3000 - 0.1x.

<h3>How to express the price?</h3>

The equation given in the question is x = 3000 - 10p. The price(p) will be:

x = 3000 - 10p.

Make p the subject of the formula

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The revenue will be price multiplied by quantity. This will be:

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The marginal revenue will be calculated after differentiating. This will be:

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brainly.com/question/1245771

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Step-by-step explanation:

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Step-by-step explanation:

hope that helps <3

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