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2 years ago

I think the answer is (-1,-2) I’m not sure tho

Mathematics

2 answers:

Andreyy892 years ago

6 0

Answer:

Yes. (-1 , -2)

Step-by-step explanation:

The solution of system of equation is given by the point at which two lines intersect.

Ainat [17]2 years ago

3 0

Answer:

(-1,-2) is correct.

Step-by-step explanation:

To find the solution of both linear graphs, you can do by finding the intercept of both graphs.

Both graphs intersect each others at x = -1 and y = -2.

Focus on x = -1 then look down and you will see that both graphs intersect at y = -2.

Thus:-

You're correct!

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Find the negative difference between -12 and -25

dexar [7]

Answer:

Step-by-step explanation:

-12 - - 25 =

- 12 + 25 =

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3 years ago

I am almost bankrupt asking the same question but....

ExtremeBDS [4]

Answer:

If you understand how I solved a you can do B. Keep at it!

Step-by-step explanation:

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3 years ago

What is the answer to 1 1/3 + (-5/6)

Ainat [17]

The answer is 0.5

Have an nice day!

3 0

3 years ago

A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 98% confidence inter

frosja888 [35]

Answer:

The minimum sample size required to create the specified confidence interval is 1024.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.01 = 0.99$ , so $z = 2.327$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when $M = 0.08, \sigma = \sqrt{1.21} = 1.1$ .

$M = z*\frac{\sigma}{\sqrt{n}}$

$0.08 = 2.327*\frac{1.1}{\sqrt{n}}$

$0.08\sqrt{n} = 2.327*1.1$

$\sqrt{n} = \frac{2.327*1.1}{0.08}$

$(\sqrt{n})^{2} = (\frac{2.327*1.1}{0.08})^{2}$

$n = 1024$

The minimum sample size required to create the specified confidence interval is 1024.

3 0

3 years ago

I will give you BRAINLEST if you answer

mafiozo [28]

Answer:

Step-by-step explanation:

the top one

8 0

3 years ago