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Oxana [17]
3 years ago
9

What is a random sampling

Mathematics
1 answer:
Masja [62]3 years ago
8 0

Random sampling is when you select a random group of people for something.

Ex. Out of a population of 259,096 people, a random sample of 400 people are choosen.

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Hey, Y'all. Was wonderin' bout this pesky question that got me a bit stumped. Thank ya for your help.
puteri [66]
Answer: Choice B) (24,10)

---------------------------------------------------------

Work Shown:

2x - 4y = 8
2( x ) - 4y = 8
2( 3y-6 ) - 4y = 8 ... notice x has been replaced with 3y-6
2(3y)+2(-6) - 4y = 8
6y-12 - 4y = 8
2y-12 = 8
2y-12+12 = 8+12 ... add 12 to both sides
2y = 20
2y/2 = 20/2 ... divide both sides by 2
y = 10

If y = 10, then
x = 3y-6
x = 3*10-6 ... replace y with 10
x = 30-6
x = 24

Put together, the solution is (x,y) = (24,10)
which is why the answer is choice B

As a check, we can plug (x,y) = (24,10) into each equation
x = 3y-6
24 = 3*10 - 6
24 = 30 - 6
24 = 24 ... true equation
and similarly for the second equation as well
2x-4y = 8
2*24 - 4*10 = 8
48 - 40 = 8
8 = 8 ... true equation
Both equations are true when (x,y) = (24,10) so the solution is confirmed
4 0
3 years ago
TV−→− bisects ∠RTS. What is the relationship between ∠RTV and ∠STV?
kenny6666 [7]

Answer:

RTV = STV

Step-by-step explanation:

Required

Determine the relationship between RTV and STV

From the question, we understand that TV is a bisector of RTS at T;

This implies that, T divides RTS into two equal parts which are;

RTV and STV

Hence;

The relationship between RTV and STV is that, the are equal.

Mathematically;

RTV = STV

8 0
3 years ago
7n+12=1/2(14n+24)<br><br><br> NEED ANSWER ASAP
Angelina_Jolie [31]

Answer:

n = all real numbers

Step-by-step explanation:

7n+12=1/2(14n+24)

multiply each side by 2

2(7n+12)=2*1/2(14n+24)

distribute

14n+24 = 14n + 24

subtract 14n from each side

14n-14n+24 = 14n-14n + 24

24=24

this is always true

n = all real numbers

3 0
3 years ago
Multi step equations plz help me with the problems in the picture
Natali [406]
6. 5
8. 3
10. 3
12. -5
14. 11
16. 27
18. 21



I don't garentee this is correct but I'm pretty sure.
6 0
3 years ago
Read 2 more answers
Please someone explain to me how did we multiply the denominator in this
AleksandrR [38]

ok so what you wanna do is use multiplication

8 0
3 years ago
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