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AlladinOne [14]
3 years ago
14

A sample of 300 subscribers to a particular magazine is selected from a population frame of 9,000 subscribers. If, upon examinin

g the data, it is determined that no subscriber had been selected in the sample more than once:________.
A. the sample could not have been random
B. the sample may have been selected without replacement or with replacement
C. the sample had to have been selected without replacement
D. the sample had to have been selected with replacement
Mathematics
1 answer:
professor190 [17]3 years ago
3 0

Answer:

C

Step-by-step explanation:

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Helppppp!!!
mafiozo [28]

Answer:

it would be 6 and 10

Step-by-step explanation:

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3 years ago
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The distance between Anubhav’s school and his house is 45 km. He started from his house for school at 7:00 am and covered 30 km
8_murik_8 [283]

Answer:

45 km/h

Step-by-step explanation:

In the first part of the trip, he already covered 30 km so we can subtract that from the total distance

45 - 30 = 15

This means he has 15 km to go

He also took an hour, or 60 minutes, to get to school. We subtract the time spent of the first part and time spent talking to a friend from the 60 minutes

60 - 35 = 25

25 - 5 = 20

He took 20 minutes to cover the second part of the journey

Speed = distance/time

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He covered 0.75 km per MINUTE

to find it in km/h, we just multiply the number by 60

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6 0
3 years ago
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The vertical change between 2 points
Levart [38]

Answer:

The vertical change between two points is called the rise, and the horizontal change is called the run.

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ALOT OF POINTS IF YOU HELP ME PLEASE EXPLAIN ​
Svetllana [295]

Answer:

Helena gave the answer as (7y²z + 6yz²- 5 - 3yz² + 2) which is equivalent to (7y²z + 3yz² - 3).

Step-by-step explanation:

Misha's group was asked to write an expression equivalent to  

7y²z + 3yz² - 3

When Mr. Chen checked their answers, he found only one to be correct.

And she was Helena.

Helena gave the answer as (7y²z + 6yz²- 5 - 3yz² + 2) which is equivalent to (7y²z + 3yz² - 3).  

Because, (7y²z + 6yz²- 5 - 3yz² + 2)

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= 7y²z + 3yz² - 3 (Answer)

4 0
3 years ago
How many meters are 345 cm equal to
Gwar [14]
There is 100 cm in 1 meter so if thats true then you must take 

345/100 

and that should be your answer :)

6 0
4 years ago
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