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3 years ago

14 over 15 divided by 28

Mathematics

2 answers:

Hoochie [10]3 years ago

8 0

Answer:

1/30

Step-by-step explanation:

When we are dividing fractions, we can turn it into multiplication

14/15 divided by 28

14/15 x 1/28

14/420

simplified to 1/30

nikitadnepr [17]3 years ago

3 0

Answer:

$\frac{1}{30}$

Step-by-step explanation:

14 / 15 / 28

= 14 / 15 / 28 / 1

=( $\frac{14}{15}$ )( $\frac{1}{28}$ )

= $\frac{(14) (1)}{(15) (28)}$

= $\frac{14}{420}$

= $\frac{1}{30}$

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dmitriy555 [2]

Answer:

Step-by-step explanation:

2|6+p|-3p³,

when p=-2

2|6+p|-3p³=2|6-2|-3(-2)³

=2(4)-3(-8)

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3 years ago

1/27^-x=81^2x+2 find x

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Answer:

Step-by-step explanation:

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3 years ago

If four blue marbles and eight non-blue marbles make a probability of 0.33, how many non-blue marbles do you need to combine wit

den301095 [7]

The number of non-blue marbles you need to combine with the blue marbles to achieve a probability of 0.1 is 28.

<h3>How many non-blue marbles are needed?</h3>

Probability determines the odds that a random event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.

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To learn more about probability, please check: brainly.com/question/13234031

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2 years ago

Given: 3x + y = 1.<br> Solve for y.<br> O y=-3x + 1<br> O y=-3x - 1<br> O y = 3x - 1

Ivan

Answer:

easy

Step-by-step explanation:

subtract 3x both side

3 0

3 years ago

Read 2 more answers

A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

VMariaS [17]

Answer:

$19.1-3.355\frac{1.5}{\sqrt{9}}=17.42$

$19.1+3.355\frac{1.5}{\sqrt{9}}=20.78$

And the best option would be:

C. [17.42,20.78]

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".

$\bar X=19.1$ represent the sample mean

$\mu$ population mean (variable of interest)

s=1.5 represent the sample standard deviation

n=9 represent the sample size

Solution to the problem

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

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

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=9-1=8$

Since the Confidence is 0.99 or 99%, the value of $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,8)".And we see that $t_{\alpha/2}=$

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

$19.1-3.355\frac{1.5}{\sqrt{9}}=17.42$

$19.1+3.355\frac{1.5}{\sqrt{9}}=20.78$

And the best option would be:

C. [17.42,20.78]

5 0

3 years ago