All categories

4 years ago

PLZ ANSWER THIS THERE IS A SCREENSHOT

Mathematics

2 answers:

allsm [11]4 years ago

8 0

Answer:

$-3,-2.4,-2 \frac{1}{4}-1.5,-1 \frac{1}{8}$

This means that the answer is the second option.

Step-by-step explanation:

First, lets convert everything to its decimal form.

$-2 \frac{1}{4} =-2.25$

$-1 \frac{1}{8} =-1.125$

Now we have the numbers: $-2.4,-1.5,-2.25,-3, -1.125$

As all of these numbers are negative we could look at each of these numbers as if they were positive and put them in descending order

This means that the order would be

$-3,-2.4,-2.25,-2.5,-1.125$

The last thing we need to do is change those two decimals back to their mixed number forms

$-3,-2.4,-2 \frac{1}{4}-1.5,-1 \frac{1}{8}$

AVprozaik [17]4 years ago

7 0

Answer: The correct answer is -3,-2.4,-2 1/4, -1.5, - 1 1/8

Hope this helps! :)

Step-by-step explanation:

You might be interested in

49 The list shows the number of songs that five students each downloaded last week.

scoundrel [369]

The correct answer is C.

7 0

4 years ago

On Saturday, Mark sold 2 7/8 gallons of lemonade.

Trava [24]

Answer:

<em>Regan sold </em> $\mathbf{\frac{23}{12}}$ <em> gallons of lemonade</em>

Step-by-step explanation:

<u>Operations with Fractions</u>

Mark sold $2\frac{7}{8}$ gallons of lemonade.

Regan sold $\frac{2}{3}$ as much lemonade as Mark

We can find the portion of lemonade Regan sold by multiplying both fractions. But first, we must convert to improper fraction:

$2\frac{7}{8}=2+\frac{7}{8}=\frac{23}{8}$

Now we multiply:

$\frac{23}{8}\cdot \frac{2}{3}=\frac{46}{24}=\frac{23}{12}$

Regan sold $\mathbf{\frac{23}{12}}$ gallons of lemonade

8 0

3 years ago

Read 2 more answers

Help please and as soon as possible and thanks

Annette [7]

This is 10.5^2 10.5 is the base and 2 is the exponent. The area is 110.25 square inches.

7 0

4 years ago

Acellus inverse variation

RUDIKE [14]

The current when the resistance is 10 ohms is 24 amps

<h3>What are variations?</h3>

Variations are simply data that change in values (i.e. not constant)

<h3>Types of variation</h3>

The types of variations are:

Direct variation
Inverse variation
Joint variation
Combine variation

From the complete question (see attachment), we have the following highlights

The variation is an inverse variation
When current (I) is 30 amps, the resistance (R) is 8 ohms

An inverse variation is represented as:

$k = IR$

Where k represents the constant of variation.

The above equation can be rewritten as:

$I_1R_1 = I_2R_2$

So, we have:

$30 \times 8 = I_2R_2$

$240 = I_2R_2$

When the resistance is 10 ohms, we have:

$240 = I_2 \times 10$

Divide both sides by 10

$24 = I_2$

Rewrite the above equation as:

$I_2 = 24$

Hence, the current when the resistance is 10 ohms is 24 amps

Read more about inverse variation at:

brainly.com/question/1327394

8 0

3 years ago

Researchers are interested if a school breakfast program leads to taller children. Assume that the population of all 5 year-old

DedPeter [7]

Answer:

$39-1.96\frac{1}{\sqrt{25}}=38.608$

$39+1.96\frac{1}{\sqrt{25}}=39.392$

So on this case the 95% confidence interval would be given by (38.608;39.392)

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".

$\bar X=39$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=25 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The margin of error is given by:

$ME= z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a tabel to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$

And replacing we got:

$ME= 1.96 *\frac{1}{\sqrt{25}}= 0.392$

Now we have everything in order to replace into formula (1):

$39-1.96\frac{1}{\sqrt{25}}=38.608$

$39+1.96\frac{1}{\sqrt{25}}=39.392$

So on this case the 95% confidence interval would be given by (38.608;39.392)

7 0

3 years ago