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inna [77]
4 years ago
8

Why might a researcher use a sample rather than an entire population for their study?

Mathematics
1 answer:
cestrela7 [59]4 years ago
6 0

Answer:

c

Step-by-step explanation:

its easier to take a group of 100 or something random people than a whole population.

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A square has a perimeter of 28
Kisachek [45]

Answer:

24

Step-by-step explanation:

To find the side length of a square, you have to divide the perimeter by 4 (since a square has 4 sides). 28 divided by 4 is 7 and 20 divided by 4 is 5. to find the area of each square, you have to multiply each side length by two. 7 times 7 is 49 and 5 times 5 is 25. 49 minus 25 is 24.

5 0
3 years ago
I WILL MARK BRAINEST!!! Someone please help me please!!! I rly need help with question 4, my friend and I both don’t understand
Brums [2.3K]

Answer:

The original number is (i)

The whole amount is (ii)

Step-by-step explanation:

So when finding a number in a percent you wanna see how much that percent will go into that number. So like if I said how many times does 60% go into 200 you would have to see how many times the number 200 would go into 60%. does this make sense? If so this is how you can find your answer.

Sorry if I'm wrong I hope you get this right!! Stay beautiful ❤️

5 0
3 years ago
The cost of a skateboard is $60. it went on sale and is now 33% off. what is the amount of the skateboard now?
Law Incorporation [45]
To find the answer for this question, you need to convert your percent to a fraction. (33/100) You will multiply 60 by 33/100, and get 19.8. That shows you the discount you are getting. Finally, you need to subtract 19.8 from 60, getting you a final answer of $40.2.
4 0
3 years ago
Read 2 more answers
What is the X for this 7x+12=26
lukranit [14]

Answer:

x = 2

Step-by-step explanation:

7x + 12 = 26 \\ subtract \: 12 \: from \: both \: side \\ 7x = 14 \\ divide \: both \: side \: by \: 7 \\ x = 2

7 0
3 years ago
What is 12+ 15x please​
Elena L [17]

Answer: 15x+12

Step-by-step explanation: This expression is already simplified :( You can reverse the coefficients though! Both will still be equal, but you can’t simplify anymore.

7 0
3 years ago
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