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JulijaS [17]
3 years ago
5

How do I solve 18=6(2x-8)

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
7 0

Answer:

x=11/2

Step-by-step explanation:

diamong [38]3 years ago
3 0

Answer:

5.5

Step-by-step explanation:

18=6(2x-8)

18=12x-48

+48     +48

66=12x

66/12

5.5

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El tamaño de cierto cultivo de bacterias se multiplica por 2 cada 30 minutos. Si suponemos que el cultivo tiene inicialmente 256
Oduvanchick [21]

Answer:

La población de bacterias después de tres horas es de 2^{14} bacterias.

Step-by-step explanation:

En este enunciado observamos un caso de progresión geométrica, en donde la población de bacterias se duplica cada treinta minutos, es decir:

\frac{p(n\cdot\Delta t)}{p(0)} = 2^{n} (1)

Donde:

\Delta t - Intervalo de tiempo requerido para el incremento geométrico de la población, en minutos.

n - Número de períodos para incremento geométrico, sin unidad.

Sabemos que la población inicial de bacterias es 256 y que 3 horas son 6 veces 30 minutos. Entonces, tenemos la siguiente razón:

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