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natita [175]
3 years ago
15

Maria's credit card balance is less then -$30. Does Maria owe more then $30 or less then $30?

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
5 0
She owes more than $30. She owes for the -$30 that we know of, however much over the -$30 she is, and most likely and interest fee as well.
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Which of the following is an example of stratified sampling? A poll asked a random sample of 1,327 adults whether they supported
Ludmilka [50]

Answer:

"Proponents of a local ballot measure conduct a survey of the city by randomly selecting 100 potential voters from each of its 18 zip codes" is an example of  stratified sampling

Step-by-step explanation:

The stratifed samplig methos its a probabilistical method that takes all the universe studied and divide this into different groups. In this case the universe is all the population divided into the 18 zip codes).

After that, it randonbly selects the subjects of every group and generates the statistical sample.

In this case, it can be used the proportional stratified samplig where  you take the porportion of voters in every zip code and use ir¡t as the number of voters selected on every zip code.

How does it can be perform? . Let's see: For example:

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So you will have a 100 subject`s sample based on the method of proportional stratified sampling

It can also use the non proportional stratified sampling method taking the same number of subjects on every zip code.

8 0
3 years ago
$3 marked up by 72% <br><br> SHOW YOUR WORK!!!!!!!
cestrela7 [59]
Not sure what answer you are looking for here so i did all of them. you’re welcome

Price = Cost / (1 – (Gross Margin/100%))

Gross Profit (Dollars) = Price x (Gross Margin/100%)

Markup = (Price / Cost) x 100%






Put it together and the

price answer is $10.71

Gross Profit $7.71

Markup 357.00%
3 0
3 years ago
Read 2 more answers
At a company picnic, 1/2 of the people are employees 2/5 are employees' spouses. What percent are neither?
victus00 [196]
First, you want to find a common denominator. The easiest way to do this is to multiple the two denominators together. A common denominator between these two fractions is 10. Two fifths times 2 is 4/10. 1/2 times 5 is 5/10. Add these two fractions together. 4/10+5/10= 9/10. That means 9/10 of the people are employees or their spouses. Now, 10/10 is one whole. You want to subtract 10/10-9/10. Your answer would be 1/10 of the people are now. Now to get your answer to a percent you have to divide 1 by 10. By doing this you get 0.1. Move the decimal 2 places to the right to get 10% of people are not an employee or spouse. Hope this helped!
5 0
4 years ago
Find the distance between each pair of points:
rusak2 [61]

Answer:

The distance between points P(x

1

,y

1

,z

1

) and Q(x

2

,y

2

,z

2

) is given by

PQ=

(x

2

−x

1

)

2

+(y

2

−y

1

)

2

+(z

2

−z

1

)

2

(i) Distance between points (2,3,5) and (4,3,1)

=

(4−2)

2

+(3−3)

2

+(1−5)

2

=

(2)

2

+(0)

2

+(−4)

2

=

4+16

=

20

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5

(ii) Distance between points (−3,7,2) and (2,4,−1)

=

(2+3)

2

+(4−7)

2

+(−1−2)

2

=

(5)

2

+(−3)

2

+(−3)

2

=

25+9+9

=

43

(iii) Distance between points (−1,3,−4) and (1,−3,4)

=

(1+1)

2

+(−3−3)

2

+(4+4)

2

=

(2)

2

+(−6)

2

+(8)

2

=

4+36+64

=

104

=2

26

(iv) Distance between points (2,−1,3) and (−2,1,3)

=

(−2−2)

2

+(1+1)

2

+(3−3)

2

=

(−4)

2

+(2)

2

+(0)

2

=

16+4

=

20

= 2

5

6 0
2 years ago
If I drink 25% of a 700ml bottle of rum, how much is left?
MA_775_DIABLO [31]

Answer:

im not sure but ur mum said 525ml

Step-by-step explanation:

5 0
2 years ago
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