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Mandarinka [93]
3 years ago
15

Anyone knows this?!!?

Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

is that just 1/2 lol i think but if u want add me on disc Andreww#6506

Step-by-step explanation:

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Which expression is the simplest form of -(4x+y)+2(x-3y)?
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Bonjour,

answer is B!
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8 more than twice a number is equal to negitive 20
natka813 [3]

Answer:

-14

Step-by-step explanation:

Well, the equation would be 8+2n=-20

2n=-28

n=-14

3 0
3 years ago
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Which expression is equivalent to (2x^2)(3x^3)(4x)^2?
otez555 [7]

(2x^2)(3x^3)(4x)^2

=6x^5(16x^2)

=96X^7

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3 years ago
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How many times dose 32 fit into 249?
olya-2409 [2.1K]

Answer:

The answer is 7.

Step-by-step explanation:

solve using division.

\frac{249}{32} \\7.78\\

the number of <em>whole</em> times 32 can fit into 249 is 7. the remainder is .78.

hope this helps!

5 0
3 years ago
Read 2 more answers
7. Se llevó a cabo una encuesta de mercado para calcular la proporción de amas de casa que reconocerían el nombre de la marca de
Norma-Jean [14]

Answer:

a) El valor de la proporción de la población = 0.3

b) El intervalo de confianza de 99% de la proporción poblacional = [0.2685, 0.3315]

c) Interprete sus conclusiones.

De los cálculos anteriores, podemos concluir que tenemos un 99% de confianza en que el parámetro de población se encuentra entre 0.2685 y 0.3315 ".

Step-by-step explanation:

a) Halla el valor de la proporción de la población.

El valor de la proporción se calcula mediante la fórmula

p = x / n

donde x = 420

n = número de muestras = 1400

Proporción (p) = 420/1400

= 60/200 = 30/100 = 3/10

= 0.3

b) Construya el intervalo de confianza del 99% para la proporción de población.

La fórmula para el intervalo de confianza para la proporción de población =

p ± z × √p (1 - p) / n

p = 0.3

z = puntuación z para un intervalo de confianza del 99% = 2.576

n = 1400

Por lo tanto:

Intervalo de confianza del 99% = 0.3 ± 2.576 × √0.3(1 - 0.3) / 1400

= 0.3 ± 2.576 × √0.3× 0.7 / 1400

= 0.3 ± 2.576 × 0.0122474487

= 0.3 ± 0.0315494279

Intervalo de confianza del 99% =

0.3 - 0.0315494279

= 0.2684505721

Aproximadamente ≈ 0.2685

0.3 + 0.0315494279

= 0.3315494279

Aproximadamente ≈ 0.3315

Por lo tanto, el intervalo de confianza del 99% = [0.2685, 0.3315]

c) Interprete sus conclusiones.

De los cálculos anteriores, podemos concluir que tenemos un 99% de confianza en que el parámetro de población se encuentra entre 0.2685 y 0.3315 ".

6 0
3 years ago
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