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andreyandreev [35.5K]
3 years ago
15

Can you help me solve this question? Cara has a list of all 720 students in her middle school. she write the name of each studen

t on a slip of paper and put each slip in a box. then she pulls 30 names from the box to decide Who she will survey about the upcoming school election.
question

what are different attributes of students or different groups of students that should be represented in the sample?
Mathematics
2 answers:
igor_vitrenko [27]3 years ago
5 0

Answer:

randomly select 10. Listen to Persian music

Step-by-step explanation:

Just listen to Aron Afshar.

Delicious77 [7]3 years ago
3 0
They have to all be middle school students.
You might be interested in
36 is 80% of what number?
Jlenok [28]
X is the number.
Then:
36=80% of x
80%=80/100=0.8

We can suggest the following equation:
36=0.8x
0.8x=36
x=36/0.8
x=45

Answer: 36 is 80% of 45
5 0
3 years ago
5x y>_10 x y<_6 x 4y>_12 x>_0 y>_0 minimum for c=10,000x + 20,000y
Serga [27]

We are given inequalities : 5x+y=>10

x+y<=6

x+4y=>12

x=>0

y=>0 .

Let us graph it first and the find the coordinate of the vertices of feasible region.

Coordinates of the feasible region are (1,5) , (1.474, 2.632) and (4,2).

Now, we need to plug those cordinates (1,5) , (1.474, 2.632) and (4,2) in the given function c=10,000x + 20,000y.

Let us plug those points one by one.

For (1,5)

c=10,000x + 20,000y = 10,000(1)+ 20,000(5)= 10,000+ 100,000 = 110,000.

For (1.474, 2.632)

C = 10,000(1.474)+ 20,000(2.632) = 67,380.

For (4,2)

C = 10,000(4)+ 20,000(2) = 80,000.

We got the minimum value 67,380 for (1.474, 2.632) coordinate.

Therefore, minimum for given function C=10,000x + 20,000y is 67,380.


5 0
4 years ago
Find the percent of the number <br>24% of 480 ​
slamgirl [31]

Answer:

115.2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the value of the expression 2 x 3^3+1/7 +5 x 8<br><br> Ps- 3^3+1/7 is a fraction
butalik [34]

Answer:

Hey! so the answer is 4

Step-by-step explanation:

Let's solve your equation step-by-step.

3x+2=14

Step 1: Subtract 2 from both sides.

3x+2−2=14−2

3x=12

Step 2: Divide both sides by 3.

3x = 12  =  x=4

3      3

Hoped this helped Im Eve btw. Hope you have a great day and consider marking this brainliest Thank you so much if you do! ✨

6 0
3 years ago
Brian wants to build a ramp that leads to a storeroom 5 meters above the ground. He wants the ramp to be 10 meters long. What sh
Ugo [173]
Answer:

The angle of elevation is <span><span>26.5650</span><span>(3dp)</span></span>

Explanation:

Let h be the end height of the ramp above the ground , l be the length of the ramp and the angle of elevation is <span>θ∴<span>tanθ</span>=<span>hl</span>=<span>510</span>=0.5∴θ=<span><span>tan<span>−1</span></span><span>(0.5)</span></span>=<span>26.5650</span><span>(3dp)</span></span>[Ans]

5 0
4 years ago
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