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3 years ago

Does the equator cross the northen or southern part of south america south america is mostly located

Mathematics

2 answers:

Phoenix [80]3 years ago

8 0

Answer:

Step-by-step explanation:

Please look up "equator" on the internet. You'll see that the equator passes through the South American country Ecuador. Ecuador is in the northern part of South America and the equator crosses mainly that part of the continent.

Paul [167]3 years ago

7 0

Answer:

It crosses the northern part of south America! The equator is an imaginary line around the middle of a planet or other celestial body. It is halfway between the North Pole and the South Pole

Step-by-step explanation:

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Find the 95% confidence interval for estimating the population mean μ

AVprozaik [17]

We first need to determine whether we are dealing with means or proportions in this problem. Since we are given the sample and population mean, we know that we are dealing with means.

Since we have one sample mean, this means we are creating a confidence interval for one sample (1 Samp T Int).

Normally we would check for conditions, but since this is not formulated as a "real-world scenario" type problem, it is hard to check for randomness and independence. Therefore, I will be excluding conditions from this answer.

<h3>Confidence Interval Formula</h3>

The formula for constructing a <u>confidence interval for means</u> is as follows:

$\displaystyle \overline{x} \pm t^*\big{(}\frac{\sigma}{\sqrt{n} } \big{)}$

We are given these variables:

$\overline{x}=50$
$n=60$
$\sigma=10$

Plug these values into the formula for the confidence interval:

$\displaystyle 50\pm t^* \big{(}\frac{10}{\sqrt{60} } \big{)}$

<h3>Finding the Critical Value (t*)</h3>

In order to find t*, we can use this formula:

$\displaystyle \frac{1-C}{2}=A$

Calculating the z-score associated with "A" will give us t*.

So, let's plug in the confidence interval 95% (.95) into the formula:

$\displaystyle \frac{1-.95}{2}=.025$

Use your calculator or a t-table to find the z-score associated with this area under the curve.. you should get:

$t^*=1.96$

<h3>Constructing Confidence Interval</h3>

Now, let's finish the confidence interval we created:

$\displaystyle 50\pm 1.96 \big{(}\frac{10}{\sqrt{60} } \big{)}$

We can calculate the confidence interval, using this formula, to be:

$\boxed{(47.4697, \ 52.5303)}$

<h3>Interpreting the Confidence Interval</h3>

We are 95% confident that the true population mean μ lies between <u>47.4697 and 52.5303</u>.

8 0

2 years ago

275x=500-125x<br><img src="https://tex.z-dn.net/?f=275x%20%3D%20500%20-%20125x%20" id="TexFormula1" title="275x = 500 - 125x " a

Fynjy0 [20]

The value of x is 1.25 or 1 1/4

Explanation
==============================
275x=500-125x
Move variable to the left side and change its sign
275x+125x=500
Collect the like terms
275x+125x=500 =====> 400x=500
Divide both sides of the equation by 400
400x/400=500 =======> x=5/4 which is the same as 1 1/4 or 1.25
Hope this helps : )

5 0

3 years ago

36 2/5 x what = 109 1/5

tamaranim1 [39]

I am not sure what the answer is but covert them into a decimal and then divide it

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3 years ago

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Eva8 [605]

Answer:i need help with this also

Step-by-step explanation:

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3 years ago

The linear functions f(x) and g(x) are represented on the graph, where g(x) is a transformation of f(x):

Brilliant_brown [7]

Answer:

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2 years ago