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r-ruslan [8.4K]
3 years ago
11

Which is an equivalent equation solved for r?

Mathematics
2 answers:
Anna [14]3 years ago
8 0

Answer:

r= C over 2π

Step-by-step explanation:

C =  2πr

To solve for r, divide each side by  2π

C/  2π =  2πr/  2π

C/  2π =  r

Elza [17]3 years ago
8 0

Answer: r= C over 2π or r=\dfrac{C}{2\pi}

Step-by-step explanation:

Formula to find the circumference of a circle is given by :-

C=2\pi r, where r is the radius of the circle .

To find the formula for r , we need to divide both sides by 2\pi, we get

r=\dfrac{C}{2\pi}

Hence, an equivalent equation solved for r will be :-

r=\dfrac{C}{2\pi} i.e. r= C over 2π

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First:

2x + 2z = 4

2(x+z)=4

x+z=4/2

x=2-z

-x - y - z=  -8

-(2-z)-y-z= -8         replace x

-2+z-y-z= -8          (cancel z)

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Then:

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x = 2- (-1)

x = 3

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