3 years ago

Is 0.19 rational or irrational?

1 answer:

3 0

Answer:

this number is rational because you can write it as a fraction 19/100

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sergejj [24]

R=D/T
R=212.5/2.5
R=85

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vova2212 [387]

Answer:821,800

Step-by-step explanation:

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2 years ago

lina2011 [118]

The answer would be c

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zavuch27 [327]

It might be mmmm idk I’m too dome

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sasho [114]

The velocity of the particle is given by

$v(t)=v(0)+\displaystyle\int_0^ta(u)\,\mathrm du$

Since $a(t)=-4\sin2t$ and $v(0)=7$ , we get

$\displaystyle\int_0^ta(u)\,\mathrm du=\int_0^t-4\sin2u\,\mathrm du=2\cos2u\bigg|_0^t=2\cos2t-2$

$\implies v(t)=2\cos2t+5$

Similarly, the position function is obtained via

$x(t)=x(0)+\displaystyle\int_0^tv(u)\,\mathrm du$

We know $v(t)$ and we're told that $x(0)=0$ , so

$\displaystyle\int_0^tv(u)\,\mathrm du=\int_0^t(2\cos2u+5)\,\mathrm du=\sin2u+5u\bigg|_0^t=\sin2t+5t$

$\implies x(t)=\sin2t+5t$

making the answer A.

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3 years ago