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bekas [8.4K]
3 years ago
14

i When 20 is added to a certain number and the sun is divided by 3, the result is 3 times the number, find the number.​

Mathematics
1 answer:
Bingel [31]3 years ago
3 0

Answer:

let \: the \: number \: be \: x \\  \frac{20 + x}{3}  = 3x \\  \frac{3(20 + x)}{3}  = (3x)3 \\ 20 + x = 9x \\ 20 = 9x - x \\ 20 = 8x \\  \frac{20}{8}  =  \frac{8x}{8}   \\ x = 2.5

Step-by-step explanation:

Hope that this is helpful .

Have a great day.

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The circumference of circle a is 3 times greater than the circumference of circle
Liono4ka [1.6K]
We know, Circumference of a Circle = 2πr

In mathematical form, You can write it as:
2πr₁ = 3(2πr₂)

2π(12) = 6πr₂

24π = 6πr₂

r₂ = 4 m

In short, Your Answer would be: 4 meter

Hope this helps!
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