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Serjik [45]
3 years ago
8

Out of a group of 30 volunteers, 14 people are chosen to participate in a survey about the number of hours of television they wa

tch each week. What is the sample in this situation? ​ ​
Mathematics
1 answer:
Cloud [144]3 years ago
5 0

Answer:

14 people

Step-by-step explanation:

- A sample is defined as a set of objects or people selected by a given criteria to be studied.

-The sample's elements are unknown pre-study.

-In this case the group of 30 is the population and the 14 people is the sample.

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A dog and a cat are 200 meters apart when they see each other. The dog can run at a speed of 30 meter per second, while the cat
LenKa [72]

Answer:

They'll meet after 200 meters , if they simultaneously start running towards each other.

Step-by-step explanation:

Let x =distance travelled by dog and 200-x be the distance travelled by cat. Inorder to meet, the sum of their travelled distances shall be equal to 200 meters as they are far apart by 200 meters.

Dog: Distance =Speed x time: x=30t

Cat: Distance = 200-x

=24t

The sum of their distance travelled shall be 200 meters: 30t+ 24t= 200;54t=200;t=200/54=3.7secs

So they will meet after 3.7 seconds

To check:

Distance travelled by dog :x=30(3.7)

=111.11 meters

Distance travelled by cat: 24t=24(3.7)

=88.89 meters

Therefore since they are travelling towards each other and their distance apart is 200 meters, after 3.7 seconds they will meet because dog travelled 111.11 meters and cat travelled 88.89 meters and they covered already 200 meters as the sum of 111.11+ 88.89

=200 meters

6 0
1 year ago
Simplify <br><img src="https://tex.z-dn.net/?f=%285%20%2B%201%29%20%5E%7B2%7D%20%20-%20%2811%20%2B%203%20%5E%7B2%7D%20%29%20%5Cd
Elodia [21]

Answer:

31

Step-by-step explanation:

Evaluate following the order set out in the acronym PEMDAS

That is parenthesis, exponents, multiplication, division, addition, subtraction

Given

(5 + 1)² - (11 + 3² ) ÷ 4

= 6² - (11 + 9) ÷ 4

= 36 - 20 ÷ 4 ← division before subtraction

= 36 - 5

= 31

6 0
3 years ago
Offering Brainliest, a 5 star review, and a like on your answer, Please help.
Nastasia [14]

Answer:

I'm pretty sure it's 1,1.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
15. Which graph does not represent the graph of a function?<br> 25 points?
shusha [124]

Answer:

the answer is c

Step-by-step explanation:

5 0
2 years ago
Need help pls i will give brainliest.
V125BC [204]

Answer:

g= 60°

i= 70°

h= 50°

Step-by-step explanation:

g=180-120 = 60°

i= 180-110 = 70°

h=180-60-70 = 50°

hope this helps =)

Kindly rate and mark brainliest. Thank you.

5 0
2 years ago
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