What is 1/5 and a coin name

1 answer:

8 0

If you speak of money, 1/5 would be 20 cents. To get 20 cents, there is a few different coins that can come up with it.

Penny - 1 + 1 + 1 + 1 + 1 1 + 1 + 1 + 1 + 1 1 + 1 + 1 + 1 + 1 1 + 1 + 1 + 1 + 1 (This is 20 ones.)

Nickel - 5 + 5 + 5 +5

Dime - 10 + 10

I hope this answer cleared up any confusion you may have been having, feel free to comment on my profile or PM me if you need further assistance. :)

- Sofie

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Questions attached as screenshot below:Please help me I need good explanations before final testI pay attention

Nikitich [7]

The acceleration of the particle is given by the formula mentioned below:

$a=\frac{d^2s}{dt^2}$

Differentiate the position vector with respect to t.

$\begin{gathered} \frac{ds(t)}{dt}=\frac{d}{dt}\sqrt[]{\mleft(t^3+1\mright)} \\ =-\frac{1}{2}(t^3+1)^{-\frac{1}{2}}\times3t^2 \\ =\frac{3}{2}\frac{t^2}{\sqrt{(t^3+1)}} \end{gathered}$

Differentiate both sides of the obtained equation with respect to t.

$\begin{gathered} \frac{d^2s(t)}{dx^2}=\frac{3}{2}(\frac{2t}{\sqrt[]{(t^3+1)}}+t^2(-\frac{3}{2})\times\frac{1}{(t^3+1)^{\frac{3}{2}}}) \\ =\frac{3t}{\sqrt[]{(t^3+1)}}-\frac{9}{4}\frac{t^2}{(t^3+1)^{\frac{3}{2}}} \end{gathered}$

Substitute t=2 in the above equation to obtain the acceleration of the particle at 2 seconds.