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3 years ago

As an estimation we are told 5 miles is 8 km. Convert 36 km to miles.

Mathematics

2 answers:

ioda3 years ago

8 0

Answer:

Step-by-step explanation:

zhuklara [117]3 years ago

7 0

Answer:

Step-by-step explanation:

I will first answer your question with the data you have provided, then offer two other ways to solve the problem with alternative data:

You have stated that 5 miles is approximately 8 kilometers. As a ratio this is 5 mi / 8 km

Now create a proportion :

5 mi / 8 km = X mi / 60 km

Miles is to kilometers as miles is to kilometers.

Now cross multiply to solve for X.

8 X = 300

X = 37.5 miles

There are several other ways we can answer this question

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If each side of the square below is 8 inches, the probability that a point chosen at random in the square is in the blue region would be 0.25.

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3 years ago

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13x - 6 = 8x + 19 solve for x

klio [65]

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2 years ago

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A population has a known standard deviation of 1.27 and a sample space contains 85 values find the margin of error needed to cre

r-ruslan [8.4K]

Answer:

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

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:

$\alpha = \frac{1-0.99}{2} = 0.005$

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 $1-0.005 = 0.995$ , so $z = 2.575$

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.

In this question:

$\sigma = 1.27, n = 85$

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

$M = 2.575*\frac{1.27}{\sqrt{85}}$

$M = 0.3547$

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

7 0

3 years ago

Can someone please help me on this math problem?!!!

lys-0071 [83]

K is centroid of the the triangle => The answer is 7.5

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3 years ago

HELPPP PRETYY PLEASEE

seropon [69]

Hello!

1) PEMDAS. Almost any expression ever

2) A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.

3) 8.38889 yards

4) idk sorry :'(

5) X= 11

6) X = -5

7) 3(x + 5).

I hope it helps!

8 0

2 years ago