215% of 18
You must change 215% into a decimal by multiplying by 100 which is 2.15
Then you multiply them
2.15×18=38.7
Then you estimate to the nearest whole number
38.7⇒39
You answer is 38.7
Your answer is 39 estimated

5 0

4 years ago

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1. The position of a particle moving along a coordinate axis is given by: s(t) = t^2 - 5t + 1. Find the speed of the particle

ANTONII [103]

Answer:

$v(t) = 2t - 5$

Step-by-step explanation:

Given

$s(t) = t^2 - 5t + 1$

Required

The speed of the particle

To do this, we simply differentiate the position function

i.e.

$v(t) = s'(t)$

So, we have:

$s(t) = t^2 - 5t + 1$

Differentiate

$s'(t) = 2t - 5 + 0$

$s'(t) = 2t - 5$

So, the speed function is:

$v(t) = 2t - 5$

6 0

3 years ago