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3 years ago

Please help! Solve 3/5x + 1/3 < 4/5x - 1/3

Mathematics

1 answer:

pochemuha3 years ago

8 0

Answer:

x > 10/3

Step-by-step explanation:

hope this helps :)

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The sum of the squares of two consecutive positive even integers is 100. find the two integers

liraira [26]

The integers are 6 and 8
6^2= 36
8^2=64
36+64=100

3 0

3 years ago

A survey of high schools offering honors classes to ninth graders reveals that 38% of the high schools offer no honors classes,

Greeley [361]

Using the discrete distribution, it is found that the probability that it offers an even number of honors classes is of 0.68.

<h3>What is the discrete probability distribution?</h3>

The distribution for the number of honors classes the school offers is given by:

P(X = 0) = 0.38

P(X = 1) = 0.12.

P(X = 2) = 0.25.

P(X = 3) = 0.2.

P(X = 4) = 0.05.

Hence the probability of an even number is given by:

P(even) = P(X = 0) + P(X = 2) + P(X = 4) = 0.38 + 0.25 + 0.05 = 0.68.

More can be learned about discrete probability distributions at brainly.com/question/24802582

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3 0

1 year ago

The Anderson family is preparing for a family reunion. They think they will need 22 juice boxes for every 6 children who attend.

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

22 for every six kids

12 is 6 doubled so you double 22 to get 44

8 0

2 years ago

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I need help...... someone plzzz help

bagirrra123 [75]

The answer is 58 and 39

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2 years ago

Read 2 more answers

Assume that a computer was used to generate the given confidence interval for the population mean. Find the sample mean or margi

stealth61 [152]

Answer:

The sample mean is

b.3.55

The margin of error is

0.32

Step-by-step explanation:

Deep explanation about a confidence interval

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

$\alpha = \frac{1-0.9}{2} = 0.05$

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 $1-0.05 = 0.95$ , so $z = 1.645$

Now, find 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.

$M = 1.645*215 = 353.675$

The lower end of the interval is the mean subtracted by M. So it is 6.4 - 0.3944 = 6.01 hours.

The upper end of the interval is the mean added to M. So it is 6.4 + 0.3944 = 6.74 hours.

In this problem:

The deep explanation is not that important.

We just have to recognize that the interval has a lower end and an upper end. The distance from both the upper and the lower end to the mean is M. This means that the sample mean is the halfway point between the lower end and the upper end.

The margin of error is the distance of these two points(lower and upper end) to the mean.

In our interval

Lower end: 3.23

Upper end: 3.87

Sample mean

$M = \frac{3.23 + 3.87}{2} = 3.55$

So the correct answer is:

b.3.55

The margin of error is

3.87 - 3.55 = 3.55 - 3.23 = 0.32

4 0

3 years ago