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3 years ago

PLEASE HELP ME PLSSSSSSSSZZ

Mathematics

1 answer:

adoni [48]3 years ago

5 0

Answer:

The answer is 5.

Step-by-step explanation:

Use order of operations. Parentheses come first, so I will compute what is in parentheses first. 11-3 is 8. Then, division comes next. I will divide 8 by 2 to get 4. Lastly, add 1 to get 5.

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a cylindrical container is to be pacjed into a cubical box. The length of the box is (2p-4). write the expression for the area o

Dvinal [7]

Answer:

Step-by-step explanation:

diameter = length of the box = 2p - 4 = 2(p - 2)

radius r = 2(p-2)/2 = p - 2

Area of the box occupied by container = πr² = 22/7 * (p-2)²

$=\frac{22(p-2)^{2}}{7}$

3 0

3 years ago

Consider a population list x with μx=10 and SDx = 1. A second population list, y, with μy=10 and SDy=2, is added to the first li

Basile [38]

Answer:

The combined standard deviation is 1.58114.

Step-by-step explanation:

The formula to compute the combined standard deviations of two different data sets is:

$SD_{c} =\sqrt{\frac{n_{X}S^{2}_{X}+n_{2}S^{2}_{Y}+n_{X}(\mu_{X}-\mu_{c})^{2}+n_{Y}(\mu_{Y}-\mu_{c})^{2}}{n_{X}+n_{Y}}$

Here $\mu_{c}$ is the combined mean given by:

$\mu_{c}=\frac{n_{X}\mu_{X}+n_{Y}\mu_{Y}}{n_{X}+n_{Y}}$

It is provided that the sample size is same for both the data sets, i.e. $n_{X} = n_{Y}=n$

Compute the combined mean as follows:

$\mu_{c}=\frac{n_{X}\mu_{X}+n_{Y}\mu_{Y}}{n_{X}+n_{Y}}\\=\frac{(n\times10)+(n\times10)}{n+n}}\\=\frac{20n}{2n}\\ =10$

Compute the combined standard deviation as follows:

$SD_{c} =\sqrt{\frac{n_{X}S^{2}_{X}+n_{2}S^{2}_{Y}+n_{X}(\mu_{X}-\mu_{c})^{2}+n_{Y}(\mu_{Y}-\mu_{c})^{2}}{n_{X}+n_{Y}}}\\=\sqrt{\frac{(n\times1^{2})+(n\times2^{2})+(n(10-10))+(n(10-10))}{n+n}}\\=\sqrt{\frac{n+4n}{2n} } \\=\sqrt{\frac{5n}{2n} } \\=\sqrt{\frac{5}{2}} \\=1.58114$

Thus, the combined standard deviation is 1.58114.

3 0

3 years ago

PLEASE ANSWER ASAP!!!!!!!!!!<br> What is the volume of the following rectangular prism?

Zarrin [17]

Answer:

13 1/2

Step-by-step explanation:

5/2 x 27/5 = 13 1/2

4 0

3 years ago

Read 2 more answers

A game spinner has regions that are numbered 1-9. If the spinner is used twice what is the probability that the first number is

KonstantinChe [14]

2/9 right???? because if you spin it you have a 1/9 chance for each number or would the answer be 2/81

3 0

3 years ago

A recent study examined the association between high blood pressure and increased risk of death from cardiovascular disease. The

zalisa [80]

<span>Find the odds of a man with high blood pressure dying from cardiovascular disease. 55 p .0165 3338 = p .0165 .0165 .0168 1 p 1 .0165 .9835

Do the same for a man with low blood pressure. 21 p .0079 2676 = = p .0079 .0079 .00796 1 p 1 .0079 .9921 = = = − − ----->

Calculate the odds ratio with the odds for the high blood pressure group in the numerator. Describe the result in words. HBP LBP odds .0168 odds ratio 2.11 odds .00796 = = = Men with high blood pressure are 2.11 times more likely to die from cardiovascular disease.</span>

7 0

3 years ago