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4 years ago

Please answer ASAP this is due tomorrow

Mathematics

1 answer:

Kay [80]4 years ago

8 0

Answer:

227.08in^2

You want to find the surface area for this problem. SA=2lw+2lh+2hw

Step-by-step explanation:

L=2.5

W=7.4

H=9.6

SA=2lw+2lh+2hw

SA=2(2.5x7.4)+2(2.5x9.6)+2(9.6x7.4)

SA=37+142.08+48

SA=227.08in^2

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Consider the following sets of sample data:

mrs_skeptik [129]

Answer:

The coefficient of variation for A is 24.6%.

The coefficient of variation for B is 33.7%.

Step-by-step explanation:

The coefficient of variation (CV) is well defined as the ratio of the standard deviation to the mean. It exhibits the degree of variation in association to the mean of the population.

The formula to compute the coefficient of variation is,

$CV=\frac{SD}{Mean}\times 100\%$

Consider the data set A.

Compute the mean of the data set A as follows:

$Mean_{A}=\frac{1}{n}\sum X$

$=\frac{1}{14}\times [36900+19400+...+26000+38400]\\=30064.2857$

Compute the standard deviation of the data set A as follows:

$SD_{A}= \sqrt{ \frac{ \sum{\left(x_i - Mean_{A}\right)^2 }}{n-1} }$

$= \sqrt{ \frac{ 712852142.8571 }{ 14 - 1} } \\\approx 7405.051$

Compute the coefficient of variation for A as follows:

$CV=\frac{SD_{A}}{Mean_{A}}\times 100\%$

$=\frac{7405.051}{30064.2857}\times 100\%\\=24.6\%$

The coefficient of variation for A is 24.6%.

Consider the data set B.

Compute the mean of the data set B as follows:

$Mean_{B}=\frac{1}{n}\sum X$

$=\frac{1}{11}\times [2.1+5.0+...+4.1+1.7]\\=3.2455$

Compute the standard deviation of the data set B as follows:

$SD_{B}= \sqrt{ \frac{ \sum{\left(x_i - Mean_{B}\right)^2 }}{n-1} }$

$= \sqrt{ \frac{ 11.9873 }{ 11 - 1} } \\\approx 1.0949$

Compute the coefficient of variation for B as follows:

$CV=\frac{SD_{B}}{Mean_{B}}\times 100\%$

$=\frac{1.0949}{3.2455}\times 100\%\\=33.7\%$

The coefficient of variation for B is 33.7%.

5 0

3 years ago

Please help!!!!!

Naya [18.7K]

Your answer is 80. A triangle’s angles add up to 180 degrees. Therefore, you need to subtract 30 and 70 from 180 to find your answer: 180-(30+70)=80 or 180-70-30=80

5 0

4 years ago

Isabella wants a coat that cost $60. She has saved 42. What fraction of the amount she needs has she saved?

Nataly [62]

The fraction is 7/10 because you simplify both numbers 42 by 6 and 60 by 6 as well.

8 0

4 years ago

Read 2 more answers

A company mixes pecans, cashews, peanuts, and walnuts to make a batch of mixed nuts. About 15.4% of the mixed nuts in a batch ar

Elan Coil [88]

Answer:

500 lb

Step-by-step explanation:

You have to make a proportion:

$\frac{part}{whole} = \frac{percent}{100}$

77 lb is part of the whole weight ( which we don't know) so 77 will go on top

The problem tells us that 15.4% of the total weight is pecans so 15.4 will go over 100 (since % are out of 100)

$\frac{77}{x} = \frac{15.4}{100}$

Then you cross multiply giving you: 7700 = 15.4x

then you divide 15.4 to both sides to isolate x which will give you 500

4 0

3 years ago

Select the correct answer. what makes mobile banking somewhat less secure than regular online banking? a. mobile banking apps ar

pickupchik [31]

The reason that makes mobile banking somewhat less secure than regular online banking is given by: Option B: Mobile devices can be lost or stolen more easily than a computer, such as a laptop.

<h3>What is mobile banking and online banking?</h3>

Mobile banking is doing transaction and bank related works through mobile apps.

Online banking refers to internet banking, usually done through websites of banks. Usually, user uses this type of banking in desktops, rather than mobiles as for mobiles, there are apps already available which are more convenient than websites.

Option A is not correct as there is almost same security for both types of banking.

Option C is not correct as this third party information access can be done for both mobile and online banking if the security is weak, else none of them will be affected.

Option D: Mostly, banking apps do not store crucial informations in memory, and if they do so,then they are protected and no other app can use it., so this option is incorrect.

Option B is somewhat correct as mobiles can be lost or stolen easily. The hacker can then use that device to steal the data if the security is weak. But, even if the security is tight, the situation when your mobile with banking information is in hands of an unethical hacker is somewhat risky.

Thus, the reason that makes mobile banking somewhat less secure than regular online banking is given by: Option B: Mobile devices can be lost or stolen more easily than a computer, such as a laptop.

Learn more about online banking versus mobile banking here:

brainly.com/question/14733614

5 0

2 years ago