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3 years ago

If the area of the rectangle is 18 kilometers what are its dimensions?

Mathematics

2 answers:

lapo4ka [179]3 years ago

5 0

The dimensions would be 9 and 2 or 6 and 3

irina [24]3 years ago

4 0

Nine and two or six and three

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Big drop is twice as long as little drop how long is little drop?

Dmitrij [34]

Twice as long as little drop...

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3 years ago

At camp in Green Bay, Wisconsin, 7/9 of the participants were from Wisconsin. Of that group 3/5 were 12 years old. What fraction

In-s [12.5K]

Since the problem stated that 7/9 of the participants were from Wisconsin, so 2/9 of it were not from Wisconsin. Now out of 7/9 participants, 3/5 of them were 12 years old, so 2/5 of them are not 12 years old. Since we now know the fractions, we'll get the equation 7/9 x 3/5 multiply 7 and 3 then divide it to the product of 9 and 5 to have the answer of 7/15. 7/15 of the participants of the camp in Green Bay is from Wisconsin and are 12 years old.

4 0

2 years ago

Read 2 more answers

How many vertices does ten hexagon have. IT 15 POINTS

never [62]

Answer: 6 sides and 6 vertices

Step-by-step explanation:

A hexagon has 6 six sides and 6 vertices

3 0

3 years ago

Read 2 more answers

Wich graph is the result of the reflection f(x) =1/4(8)^x across the y axis and then across the x- axis

Snowcat [4.5K]

Answer:

I assume that the function is:

$f(x) = \frac{1}{4}*8^x$

Now let's describe the general transformations that we need to use in this problem.

Reflection across the x-axis:

For a general function f(x), a reflection across the x-axis is written as:

g(x) = -f(x)

Reflection across the y-axis:

For a general function f(x), a reflection across the y-axis is written as:

g(x) = f(-x)

Then a reflection across the y-axis, and then a reflection across the x-axis is just:

g(x) = -(f(-x)) = -f(-x)

In this case, we have:

$f(x) = \frac{1}{4}*8^x$

then:

$g(x) = -f(-x) = -\frac{1}{4}*8^{-x}$

Now we can graph this, to get the graph you can see below:

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2 years ago

The Information Technology Department at a large university wishes to estimate the proportion of students living in the dormitor

nadya68 [22]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16$

And rounded up we have that n=385

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by $\alpha=1-0.99=0.01$ and $\alpha/2 =0.005$ . And the critical value would be given by: