What is the answer to this problem? Please help me

Mathematics

1 answer:

aksik [14]3 years ago

5 0

Answer:

Step-by-step explanation:

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A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find th

Lena [83]

F(t) = (t^-1) - t
Taking derivative:
f'(t) = d/dt(t^-1) - t) = d/dt(t^-1) - d/dt(t) 
f'(t) = -1(t^-2) -1
= -t^-2 - 1 
f'(t) = v(t),
It can be also written as :
-1/t^2 - 1 

So v(3) = -1/(3^2) - 1 = -1/9 - 1 = -10/9

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12x-3y=-3 6x+y=1 Solving systems of equations

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The answer and the process is shown in the following picture

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According to a 2009 Reader's Digest article, people throw away about 14% of what they buy at the grocery store. Assume this is t

ahrayia [7]

Answer:

18.67% probability that the sample proportion does not exceed 0.1

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

For the sampling distribution of a sample proportion, we have that $\mu = p, \sigma = \sqrt{\frac{p(1-p)}{n}}$