3 years ago

Solve −2x − 15 = 6x + 9.

Mathematics

1 answer:

Sindrei [870]3 years ago

6 0

Answer: $x=-3$

Step-by-step explanation:

Given the equation:

$-2x - 15 = 6x + 9$

You must solve for "x" to find its value.

You can follow these steps:

- Add $2x$ to both sides of the equation:

$-2x - 15+2x= 6x + 9+2x$

$- 15 = 8x +9$

- Subtract 9 from both sides of the equation:

$- 15-9 = 8x +9-9$

$-24 = 8x$

- Divide both sides of the equation by 8. Then you get:

$\frac{-24}{8}=\frac{8x}{8}\\\\x=-3$

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In a country that only wants girls, every family continues to have children until they have a girl. If they have a boy, they hav

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Complete Question

In a country in which people only want Girls, every family continues to have children until they have a Girl. If they have Girl, they stop. If they have boy, they will continuous have child. Assuming that the birthrate of Girl is 52%, what is the proportion of Girl in the country?

Answer:

0.52

Step-by-step explanation:

From the question we are told that

52% is the birthrate of Girls

Therefore

$\frac{52}{100} =0.52$