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2 years ago

Which polygon appears to be regular?

Mathematics

1 answer:

Tresset [83]2 years ago

5 0

Answer:

Figure A

Step-by-step explanation:

A regular polygon is a polygon that is equiangular and equilateral (all angles are equal and all sides are equal) and A is the only one that works

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Each of the 10,000 shelves in a certain library is 300 cm long. To estimate how many books in the library need rebinding, a libr

monitta

Answer:

If all the books are of the same size, this is truly a simple random sampling method.

If not, the random selection of the length of shelf at which the book to be sampled will be picked favours the bigger/fatter books and the process seizes to be a simple random sampling.

Check the explanation for more clarification.

Step-by-step explanation:

In simple random sampling, each member of the population has an equal chance of being sampled. The best way to go about this is usually to truly randomize the sampling technique by assigning numbers to members of a population and randomly picking the numbers. Any member of the population that the number picked belongs to, is picked to be sampled. The best way to pick random numbers is to use a computer program to do it these days.

So, for this problem, the librarian tries as much as possible and does randomize the sampling process enough for the books. But this is indeed a simple random sampling method if all the books truly have equal chance of being selected.

In selecting the shelf, it is as random as possible, but in selecting the book, the random length on the shelf picked will represent random sampling if all the books are similar in size. If not, the bigger/fatter books have a higher chance of being selected than the thinner ones and this seizes to be a random sampling technique if all the books do not have equal chance of being picked.

6 0

3 years ago

A pack of Original Starbursts contains four colors/flavors: red (cherry), orange (orange), yellow (lemon), and pink (strawberry)

BartSMP [9]

Answer:

P ( P U T ) = 0.6481

Dependent events

P ( P / T ) = (359/756) = 0.4749

Step-by-step explanation:

Given:

- Pink : P

- Teenagers: T

Find:

- P( T u P )

- Are the events T and R dependent, independent, mutually exclusive, or complementary

- If the events are independent, then we can compare P ( P / T ).

Solution:

For first part we will determine the total outcome for T and P:

Total outcomes P or T = 359 + 252 - 121 = 490

(P U T) = (P) + (T) - (P n T)

The total number of possible outcomes are = 756

Hence, P ( P U T ) = 490 / 756 = 0.6481

We are to investigate how the two events are related to one another:

- Check for dependent events:

P ( T n P ) = P( T ) * P ( P / T )

(121 / 756 ) = (252/756) * ( 121 / 252 )

(121 / 756) = (121/756) ....... Hence, events are dependent

- Check for independent events:

P ( T n P ) = P( T ) * P ( P )

(121 / 756 ) = (252/756) * ( 359 / 756 )

(121 / 756) =/ (359/756) ....... Hence, events are not independent

- Check for mutually exclusive events:

P ( T U P ) = P( T ) + P ( P )

(490 / 756 ) = (252/756) + ( 359 / 756 )

(121 / 756) =/ (611/756) ... Hence, events are not mutually exclusive

Hence, the two events are dependent on each other.

If the events are said to be independent then the event:

P ( P / T ) = P (P)

P ( P / T ) = (359/756) = 0.4749

7 0

3 years ago

Find the value of x. Round your answer to the nearest tenth.

ddd [48]

You would do

tan 50°= x/6
6 tan 50 = x
x= 7.15, but rounded would be 7.2
so the answer is C

4 0

3 years ago

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Select ALL the equations represented by this tape diagram.

stepladder [879]

Answer:

I think A, C and D

fillerfillerfiller

3 0

2 years ago

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It's Quadratic, Exponential or Linear?

Neporo4naja [7]

Answer:

quadratic table

7 0

2 years ago

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