2 years ago

(Please Help I will mark Brainliest to the most accurate answer)

Mathematics

2 answers:

harkovskaia [24]2 years ago

8 0

Answer:

8π

Step-by-step explanation:

8π because the circumference is C=dπ

so since d = 8

the circumference is 8π

Hope this helps :3

Alika [10]2 years ago

3 0

Answer:

4 pi cm

Step-by-step explanation:

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Solve the separable differential equation dtdx=x2+164 and find the particular solution satisfying the initial condition x(0)=9

maria [59]

$\dfrac{dt}{dx} = x^2 + \frac{1}{64} \Rightarrow\ dt = \left(x^2 + \frac{1}{64}\right)dx \Rightarrow \\ \\ \displaystyle \int 1 dt = \int \left(x^2 + \frac{1}{64}\right)dx \Rightarrow \\ t = \dfrac{x^3}{3} + \frac{x}{64} + C$

C = 9 because all the x terms go away.

$t = \dfrac{x^3}{3} + \dfrac{x}{64} + 9$