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Shkiper50 [21]
3 years ago
12

OCHO niños seleccionados al azar para ir en un carro alegorico en un desfile pesan: 62, 54, 85, 50, 76, 49, 66 y 70 libras. A) C

on el 90% de confianza, ¿ Que podemos afirmar acerca del error máximo al estimar el peso medio de la población de todos los niños de los cuales provino esta muestra como 64 libras? B) Construya un intervalo de confianza del 99% del peso medio de todos los niños de los cuales provino esta muestra
Mathematics
1 answer:
Alina [70]3 years ago
3 0

Answer:

Step-by-step explanation:

bjsjbkj is muisjm  isu auisbm buis iusa uisb sui ausius suasu su usma usus  usausus ususinuhsshsu u su su suususujsusubsubs busbusus su susbu susu su susbu sub su su us us u u us u aubs aubs ua us auud snud .sus m ;usndiu smudiiiiiii msuidb smuid smiusd smkiudbsiud bsiudb siu basdu

poda lusu koothi

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Solve the inequality t divide 4 > 7
ioda

Answer:

60

Step-by-step explanation:

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3 years ago
Consider the function f(x)= 2/5x-4
Gre4nikov [31]

Answer: a) \frac{5}{2}x+10=f^{-1}(x)=g(x)

Step-by-step explanation:

Since we have given that

f(x)=\frac{2}{5}x-4

a.) Find the inverse of f(x) and name it g(x).

Let f(x) = y

So, it becomes

y=\frac{2}{5}x-4

Switching x to y , we get

x=\frac{2}{5}y-4

5x=2y-20\\\\5x+20=2y\\\\\frac{5x+20}{2}=y\\\\\frac{5}{2}x+10=y\\\\\frac{5}{2}x+10=f^{-1}(x)=g(x)

b) . Use composition to show that f(x) and g(x) are inverses of each other.

\mathrm{For}\:f=\frac{2}{5}x-4\:\\\\\mathrm{substitute}\:x\:\mathrm{with}\:g\left(x\right)=\frac{5}{2}x+10\\\\=\frac{2}{5}\left(\frac{5}{2}x+10\right)-4\\\\=x

Similarly,

\mathrm{g\left(x\right)=\frac{5}{2}x+10,\:f\left(x\right)=\frac{2}{5}x-4,\:g\left(x\right)\circ \:f\left(x\right)}\\\\\mathrm{For}\:g=\frac{5}{2}x+10\:\mathrm{substitute}\:x\:\mathrm{with}\:f\left(x\right)=\frac{2}{5}x-4\\\\=\frac{5}{2}\left(\frac{2}{5}x-4\right)+10\\\\=x

so, both are inverses of each other.

c) Draw the graphs of f(x) and g(x) on the same coordinate plane.

As shown below in the graph , Since for inverse function we need an axis of symmetry i.e. y=x

And both f(x) and g(x) are symmetry to y=x.

∴ f(x) and g(x) are inverses of each other.


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4 years ago
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3 years ago
A die is tossed. find the odds against rolling a number greater than 1
masya89 [10]

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2 years ago
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Factorize by splitting the middle term 6x-11x+4​
Gennadij [26K]

Answer: (2x - 1)(3x - 4)

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Step-by-step explanation:

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-8, -3 works

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3 years ago
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