All categories

3 years ago

LITTERLY HELP ME PLEASEE..... 2/x-4x/2x-3=-2 PLEASEE I INSERTED A PIC

Mathematics

1 answer:

Stels [109]3 years ago

3 0

Answer:

x = -3

Step-by-step explanation:

Given expression is,

$\frac{2}{x}- \frac{4x}{2x-3}=-2$

$\frac{2(2x-3)}{x(2x-3)}-\frac{4x(x)}{x(2x-3)}=-2$

$\frac{2(2x-3)-4x^{2} }{x(2x-3)}=-2$

(4x - 6) - 4x² = -2x(2x - 3)

4x - 6 - 4x² = -4x² + 6x

4x - 6 = 6x

6x - 4x = -6

2x = -6

x = -3

You might be interested in

Which system of equations graphed below has a solution of (2,1)

goldfiish [28.3K]

Answer:

Sorry to say this... but neither of them have a solution of (2,1)

Step-by-step explanation:

The top one has a solution of (-2,-1). The one on the bottom has a solution of (-2,1). So... I'm not sure how this can help... but yeah...

8 0

3 years ago

A forester studying the effects of fertilization on certain pine forests in the Southeast is interested in estimating the averag

ahrayia [7]

Answer:

$P(-2 \leq \bar X -\mu \leq 2)$

If we divide both sides by $\frac{\sigma}{\sqrt{n}}$ we got:

$P(\frac{-2}{\frac{4}{\sqrt{9}}}\leq Z \leq \frac{2}{\frac{4}{\sqrt{9}}})$

And we can use the normal distribution table or excel to find the probabilites and we got:

$P(-1.5 \leq Z \leq 1.5)= P(Z$ Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the area of a population, and for this case we know the distribution for X is given by:

$X \sim N(M,4)$

Where $\mu=M$ and $\sigma=4$

We select a a sample of n =4 and since the distribution for X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And we want to find this probability:

$P(-2 \leq \bar X -\mu \leq 2)$

If we divide both sides by $\frac{\sigma}{\sqrt{n}}$ we got:

$P(\frac{-2}{\frac{4}{\sqrt{9}}}\leq Z \leq \frac{2}{\frac{4}{\sqrt{9}}})$

And we can use the normal distribution table or excel to find the probabilites and we got:

$P(-1.5 \leq Z \leq 1.5)= P(Z$

8 0

3 years ago

Someone plplease help me with this ASAP

Vinil7 [7]

Answer: The slope is -6/5

Step-by-step explanation:

7 0

3 years ago

What’s 2+2+2+2+3+3+45837298=?

GuDViN [60]

Answer:

45837312

Step-by-step explanation:

I'm smart. (Sometimes)

3 0

3 years ago

Read 2 more answers

Can you help me with #3 please

sveticcg [70]

We have two terms: 3x^3 and -9x

You have the correct GCF which is 3x. This GCF is factored out and placed to the left of the parenthesis, as you have done correctly so far.

Since 3x times x^2 is equal to 3x^3, this means that you have the proper first term inside the parenthesis. So far so good.

Where you make a mistake is with the second term inside the parenthesis. Notice how 3x times 2 is NOT equal to -9x

You need to fill in the blank:
3x times _________ = -9x

It turns out that -3 goes in that blank since 3x times -3 = -9x

This is why the final answer for problem 3 is 3x(x^2 - 3)

5 0

3 years ago