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77julia77 [94]
2 years ago
7

Jayden is downloading songs onto his MP3 player. One song is 5 minutes long,another is 2 minutes long,and a third is between the

lengths of the other two songs. What is the total length of all three songs?
Mathematics
2 answers:
Cloud [144]2 years ago
7 0
3.5 minutes long is the answer
Sladkaya [172]2 years ago
6 0

Answer:

<u><em>Jayden is downloading songs onto his MP3 player. One song is 5 minutes long,another is 2 minutes long,and a third is between the lengths of the other two songs. What is the total length of all three songs?</em></u>

<u><em>Step-by-step explanation:</em></u>

<u><em>Jayden is downloading songs onto his MP3 player. One song is 5 minutes long,another is 2 minutes long,and a third is between the lengths of the other two songs. What is the total length of all three songs? </em></u>

<u><em>so the answer iis 3.5 minutes long</em></u>

<u><em></em></u>

<u><em></em></u>

<u><em></em></u>

<u><em></em></u>

<u><em>BRAINLIEST PLS??????????</em></u>

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Naomi is still not sure how many boxes of each type of candy to order. Her dad explains that he needs to do a little more mathem
Vlada [557]

Answer:

how much does each box cost?

Step-by-step explanation:

6 0
2 years ago
If X is a r.v. such that E(X^n)=n! Find the m.g.f. of X,Mx(t). Also find the ch.f. of X,and from this deduce the distribution of
astraxan [27]
M_X(t)=\mathbb E(e^{Xt})
M_X(t)=\mathbb E\left(1+Xt+\dfrac{t^2}{2!}X^2+\dfrac{t^3}{3!}X^3+\cdots\right)
M_X(t)=\mathbb E(1)+t\mathbb E(X)+\dfrac{t^2}{2!}\mathbb E(X^2)+\dfrac{t^3}{3!}\mathbb E(X^3)+\cdots
M_X(t)=1+t+t^2+t^3+\cdots
M_X(t)=\displaystyle\sum_{k\ge0}t^k=\frac1{1-t}

provided that |t|.

Similarly,

\varphi_X(t)=\mathbb E(e^{iXt})
\varphi_X(t)=1+it+(it)^2+(it)^3+\cdots
\varphi_X(t)=(1-t^2+t^4-t^6+\cdots)+it(1-t^2+t^4-t^6+\cdots)
\varphi_X(t)=(1+it)(1-t^2+t^4-t^6+\cdots)
\varphi_X(t)=\dfrac{1+it}{1+t^2}=\dfrac1{1-it}

You can find the CDF/PDF using any of the various inversion formulas. One way would be to compute

F_X(x)=\displaystyle\frac12+\frac1{2\pi}\int_0^\infty\frac{e^{itx}\varphi_X(-t)-e^{-itx}\varphi_X(t)}{it}\,\mathrm dt

The integral can be rewritten as

\displaystyle\int_0^\infty\frac{2i\sin(tx)-2it\cos(tx)}{it(1+t^2)}\,\mathrm dt

so that

F_X(x)=\displaystyle\frac12+\frac1{2\pi}\int_0^\infty\frac{\sin(tx)-t\cos(tx)}{t(1+t^2)}\,\mathrm dt

There are lots of ways to compute this integral. For instance, you can take the Laplace transform with respect to x, which gives

\displaystyle\mathcal L_s\left\{\int_0^\infty\frac{\sin(tx)-t\cos(tx)}{t(1+t^2)}\,\mathrm dt\right\}=\int_0^\infty\frac{1-s}{(1+t^2)(s^2+t^2)}\,\mathrm dt
=\displaystyle\frac{\pi(1-s)}{2s(1+s)}

and taking the inverse transform returns

F_X(x)=\dfrac12+\dfrac1\pi\left(\dfrac\pi2-\pi e^{-x}\right)=1-e^{-x}

which describes an exponential distribution with parameter \lambda=1.
6 0
3 years ago
The volume of a box 4in wide 2in high and 5in long is
Free_Kalibri [48]

Answer:

40 cubic inches

Step-by-step explanation:

The Formula for Volume: Length x Width x Height (L x W x H)

4 times 2 times 5 = 40

6 0
2 years ago
Kayla is on level 12 of a new game. Everyday she completes 6 new levels. Maddy is on level 28 of the same game. Everyday she com
ankoles [38]

Answer:

Kayla and Maddy will be in the same level in 4 days.

Step-by-step explanation:

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Maddy: y = 2x  + 28

6x + 12 = 2x + 28

Subtract 2x from both sides;

4x + 12 = 28

Subtract 12 from both sides;

4x = 16

Divide both sides by 4;

x = 4

3 0
2 years ago
Read 2 more answers
What is the measure of angle c?
svlad2 [7]

Answer:

c=29°

Step-by-step explanation:

angle b=97°{ vertically opposite angle}

now,

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  • x=180-151
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<h2>stay safe healthy and happy.</h2>
4 0
3 years ago
Read 2 more answers
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