3 years ago

Someone help me!!! Please, i only have a few minutes :(

Mathematics

2 answers:

GuDViN [60]3 years ago

4 0

Answer:

true, false

Step-by-step explanation:

muminat3 years ago

4 0

Correct Answer: True ( first picture )
Correct Answer: False ( second picture )

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Es urgente ¡¡¡ si la MH de a y 4 es 6 y la MH de 8 y b es 12 calcula la MH de a y b

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Answer:

Sabemos que:

$MH(x, y) = \frac{2xy}{x+y}$

y tenemos que:

$MH (a,4) = \frac{2*a*4}{a+4} = \frac{8*a}{a+4} = 6$

Con esto podemos encontrar el valor de a:

8*a/(a+ 4) = 6

8*a = 6*(a + 4) = 6*a + 24

8a - 6a = 24

2a = 24

a = 24/2 = 12.

Tambien sabemos que:

$MH(8,b) = \frac{2*8*b}{8+b} =\frac{16*b}{8+b} = 12$

Y de ahí podemos despejar b:

(16*b)/(b + 8) = 12

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16b - 12b = 96

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Entonces tenemos a = 12 y b = 24, y el MH de a y b es:

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