HELP! it’s short you don’t have to explain

Solve this quadratic equation. 6x^2 - 2x = 7

sweet-ann [11.9K]

The solutions to the equation are $\frac{1 +/- \sqrt{43}}{6}$ .

You can find the answer to any quadratic by using the quadratic formula. The formula is below.

$\frac{-b +/- \sqrt{b^{2}-4ac}}{2a}$

Then find a (the number attached to x^2), b (the number attached to x) and c (the constant). This will allow you to plug in and solve.

$\frac{2 +/- \sqrt{-2^{2}-4(6)(-7)}}{2(6)}$

$\frac{2 +/- \sqrt{4 + 168}}{12}$

$\frac{2 +/- \sqrt{172}}{12}$

$\frac{1 +/- \sqrt{43}}{6}$

8 0

4 years ago

What will be the ordered pair of A' and B' after the line segment has been translated up 8 and to the left 9?

Anna [14]

a:-6,-7,-4-8

the picture should be with whole question but np

3 0

3 years ago

The price of a cellular phone declines by 33 percents of its current value every year. At this rate, approximately how many year

Jobisdone [24]

Every year, the price of the smartphone is the $67\%$ of the price of the previous year (since we lose the $33\%$ , we remain with the $67\%$ ).

Since $67\%$ can be written as $\frac{67}{100}$ , the price after one year will be

$243 \cdot \frac{67}{100} = 162.81$

After two years, the price is the $67\%$ of the price after one year:

$162.81 \cdot \frac{67}{100} = 109.08$

And so on: after three years we have

$109.08 \cdot \frac{67}{100} = 73.08$

So, the answer is somewhere between three and four years.

5 0

3 years ago

What is the value of n? <br> N-36=135-30

Lunna [17]

Answer:

141

Step-by-step explanation:

N - 36 = 135 - 30

N - 36 = 105

N = 105 + 36

N = 141

6 0

4 years ago

A city council member wanted to know how her constituents felt about a planned resining she randomly selected 75 names from the

Arturiano [62]

Answer:

Step-by-step explanation:

Hello!

A city council member wanted to know how her constituents felt about a planned rezoning. She randomly selected 75 names from the city phone directory and conducted a phone survey.

Identify the population and sample in this setting.

The population of interest is confirmed by all the individuals or experimental units that the researcher wants to study. The sample is normally a portion of the population randomly selected and representative of it. Since in most cases it is impossible to study the whole population the sample is taken. Then after the experiment is conducted, the conclusions reached are extrapolated to the whole population.

Normally is easier to identify the sample first and then the population, in this example, the sample is "75 names from the city phone directory" then the population will be "people registered in the city phone directory"

The correct option is the first one.

> The population is everyone listed in the city phone directory; the sample is the 75 people selected. CORRECT

> The population is residents of the city; the sample is the registered voters in the city. INCORRECT

> The population is registered voters in the city; the sample is everyone listed in the city phone directory. INCORRECT

I hope this helps!

4 0

3 years ago