Si 3x-y es igual a 12 ¿cual es el valor de 8x/2y?

Responder:

4/y + 1/3

Explicación paso a paso:

Dado que:

3x - y = 12

3x = 12 + y

Divide ambos lados entre 3

x = 4 + y / 3 - - - (1)

Valor de 8x / 2y

8x / 2y = 4x / y

4x / a - - - (2)

Sustituye x = 4 + y / 3 en (2)

4 (4 + y / 3) ÷ y

(16 + 4g / 3) / y

16 / y + (4y / 3 ÷ y)

16 / y + (4y / 3 × 1 /y)

16 /y + 4/3

Dividiendo a través de 4

(16 /y) * 1/4 + (4/3) * (1/4)

(4 /y + 1/3)

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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