Question

5 x + 4y = ⅕ 5x + 3y = ⅙ using Elimination Method

Answer 1

Answer:

Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in nature, it should not be surprising that there are many nuclear isotopes which are unstable and emit some kind of radiation.

Answer 2

Answer:

$x = \frac{1}{75}$

$y = \frac{1}{30}$

Step-by-step explanation:

5 x + 4y = ⅕ ------ eq 1

5x + 3y = ⅙ ------- eq 2

Subtracting eq 2 from eq 1

y = ⅕ - ⅙

$y = \frac{6 - 5}{30}$

$y = \frac{1}{30}$

$5x + 4 \times \frac{1}{30 } = \frac{1}{5}$

$5x = \frac{1}{5} - \frac{4}{30}$

$5x = \frac{6 - 4}{30}$

$5x = \frac{1}{15}$

$x = \frac{1}{75}$