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Paladinen [302]
3 years ago
6

¿Cuál es el área de un círculo cuya circunferencia mide 7π cm?

Mathematics
1 answer:
Andrej [43]3 years ago
8 0

Answer:

r = 1.4927053303605 cm

C = 9.3789441996695 cm

A = 7 cm²

Step-by-step explanation:

r = radius

C = circumference

A = area

π = pi = 3.1415926535898

√ = square root

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In a parallelogram one side is 5x-4 and the consecutive side 2x+3.If the perimeter is 166cm,find the lengths of the sides.
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Answer:

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Step-by-step explanation:

2(5x - 4 + 2x + 3) = 166

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divide both sides of the equal sign by 14

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Lim x-1 x³-2x²+3x-2/(2x^4-3x+1)
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Since the limit becomes the undetermined form

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it means that both polynomials have a root at x=1. So, we can fact both numerator and denominator:

x^3-2x^2+3x-2 = (x-1)(x^2-x+2)

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So, the fraction becomes

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Now, as x approaches 1, you have no problems anymore:

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A bag contains 120 marbles Some are red and the rest are black. There are 19 red marbles for every black marble. How many black
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Answer:

6 black

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