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3 years ago

13

Dillon words at the park every third day. William words at the park every fourth day. They both last worked together on a Thursd

ay. Who will be working on the following Thursday?

1 answer:

AnnZ [28]3 years ago

7 0

Neither because 7 is not a multiple of either 3 or 4.

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A quantity x has cumulative distribution function p(x) = x − x2/4 for 0 ≤ x ≤ 2 and p(x) = 0 for x < 0 and p(x) = 1 for x &gt

34kurt

$F_X(x)=\begin{cases}0&\text{for }x2\end{cases}$

Recall that the PDF is given by the derivative of the CDF:

$f_X(x)=\dfrac{\mathrm dF_X(x)}{\mathrm dx}=\begin{cases}1-\dfrac x2\\\\0&\text{otherwise}\end{cases}$

The mean is given by

$\mathbb E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\int_0^2\left(x-\dfrac{x^2}2\right)\,\mathrm dx=\frac23$

The median is the number $M$ such that $F_X(x)=\mathbb P(X\le M)=\dfrac12$ . We have

$F_X(M)=M-\dfrac{M^2}4=\dfrac12\implies M=2\pm\sqrt2$

but both roots can't be medians. As a matter of fact, the median must satisfy $0\le M\le2$ , so we take the solution with the negative root. So $M=2-\sqrt2$ is the median.

3 0

4 years ago

What is the slope of the line passing through the points (−1, 3) and (4, −7) ? −4/3 2 3/4 −2

victus00 [196]

YOU FIND THE SLOPE BY PUTING THE NUMBER IN FOR THIS FORMULA Y2 - Y1/ X2 - X1 THIS WOULD BE -7 -3/ 4 +1 THIS WILL GIVE YOU -10/5 WHICH WHEN YOU SIMPLIFY WILL GIVE YOU THE ANSWER OF -2

4 0

3 years ago

Carly is a catcher on the school softball team. By the end of the season she played 45% of the 40 games the team played. In how

klemol [59]

She played 18 games, so subtract 18 from 40 to get your answer
She did NOT play 22 games
Hope I helped!

4 0

3 years ago

Read 2 more answers

Simple and easy question<br> please help

Mrrafil [7]

Answer:

Volume = πr²h

= 3.14 * 5² * 4

= 314 cubic yards

6 0

4 years ago

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How do your solve multipling Polynomial

Mars2501 [29]

<span><span> Step 1: Distribute each term of the first polynomial to every term of the second polynomial. In this case, we need to distribute the 4x and the –5. </span> <span> <span>Step 2: Combine like terms.</span></span></span>

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4 years ago