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3 years ago

Help please with question 3

Mathematics

2 answers:

densk [106]3 years ago

8 0

Answer:

The option B is the correct answer which is the $3000 account will earn three times more than the $1000 account.

Step-by-step explanation:

The interest rate is amount of interest due per period. and it is in the form of percentage.

For example if the interest rate on both accounts is 10%. Then the total earning from first account will be $300 and earning from the second account will be $100.

Now the earning from account of $3000 is 3 times more than the earning fro the account of $1000.

$300 = 3($100)

Hence proved that the $3000 account will earn three times more than the $1000 account.

vladimir2022 [97]3 years ago

7 0

Investment made in one of the account is $1000 and investment made in other account is $3000.

Further, it is given that interest rate in both the accounts is same and the period for which the amount is invested is also same.

Interest = Principal * Rate * Time /100

So in case of 1st account,

Interest = 1000 * Rate * Time/100

and for the second account,

Interest = 3000* Rate * Time /100

So, comparing above two interest, it is evident that $3000 account will earn three times the amount of interest.

Hope it helps.

Thank you ..!!

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Each month, the census bureau mails survey forms to 250,000 households asking questions about the people living in the household

allsm [11]

Answer:

Option D is correct. All US households are among the population of interest.

Step-by-step explanation:

The Census bureau is a national body in the U.S. and they do the survey of 250000 different households monthly. The surveys go out to all corners of the U.S. depending on which part of the nation is doing the survey next.

It shows that the entire U.S. population is of interest to the census bureau.

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3 years ago

What is the perimeter of the quadrilateral?

olasank [31]

Answer:

24.6

Step-by-step explanation:

you multiply them all by two then add them together. :P

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2 years ago

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Sample annual salaries (in thousands of dollars) for employees at a company are listed. 42 36 48 51 39 39 42 36 48 33 39 42 45 (

Sonja [21]

Answer:

a) Data given: 42 36 48 51 39 39 42 36 48 33 39 42 45

$\bar X = 41.538$

$s = 5.317$

b) 44.1, 37.8, 50.4, 53.55, 40.95, 44.1, 37.8, 50.4 ,34.65, 40.95, 44.1, 47.25

$\bar X = 43.615$

$s= 5.583$

c) 3.5, 3, 4, 4.25, 3.25, 3.25, 3.5, 3, 4, 2.75, 3.25, 3.5, 3.75

$\bar X= 3.462$

$s = 0.443$

d) As we can see, the average of part b is 1.05 times the average of part a (1.05 * 41.538 = 43.615) and the average of part c is equal to the average obtained in part a divided by 12 (41.538 / 12 = 3.462).

And that happens because we create linear transformations for the parts b and c and the linear transformation affects the mean.

And you have the same interpretation for the deviation, it is affected by the linear transformation as the mean.

Step-by-step explanation:

For this case we can use the following formulas for the mean and standard deviation:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

$s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

Part a

Data given: 42 36 48 51 39 39 42 36 48 33 39 42 45

And if we calculate the mean we got:

$\bar X = 41.538$

$s = 5.317$

Part b

For this case we know that each value present a 5% of rise so we just need to multiply each value bu 1.05 and we have this new dataset:

44.1, 37.8, 50.4, 53.55, 40.95, 44.1, 37.8, 50.4 ,34.65, 40.95, 44.1, 47.25

And if we calculate the new mean and deviation we got:

$\bar X = 43.615$

$s= 5.583$

Part c

The new dataset would be each value divided by 12 so we have:

3.5, 3, 4, 4.25, 3.25, 3.25, 3.5, 3, 4, 2.75, 3.25, 3.5, 3.75

And the new mean and deviation would be:

$\bar X= 3.462$

$s = 0.443$

Part d

As we can see, the average of part b is 1.05 times the average of part a (1.05 * 41.538 = 43.615) and the average of part c is equal to the average obtained in part a divided by 12 (41.538 / 12 = 3,462).

And that happens because we create linear transformations for the parts b and c and the linear transformation affects the mean.

And you have the same interpretation for the deviation, it is affected by the linear transformation as the mean.

5 0

3 years ago

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sweet [91]

I strongly disagree bc it was an corporation for the public in 1995

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2 years ago

How would you estimate the price if a shirt that usually costs $32.99 is on sale for 25% off?

Nuetrik [128]

Answer:

32.99/4 is about 8.25

8.25 x 3= 24.75

about 24.75

Step-by-step explanation:

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2 years ago

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