Answer:
In statistics, quality assurance, and survey methodology, sampling is the selection of a subset of individuals from within a statistical population to estimate characteristics of the whole population. Statisticians attempt for the samples to represent the population in question.
Step-by-step explanation:
Send a better picture. The problems are hard to see.
Answer:
x=3; y=5
Step-by-step explanation:
y=x+2
y=3x-4
so x+2=3x-4
2x=6
x=3
because y=x+2
x=3
so y=3+2
=5
Answer:
- <u>Faisal will receive $ 241</u>
- <u>Ahmed will receive $ 482</u>
- <u>Walid will receive $ 723. </u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Profit Ahmed, Walid and Faisal made from selling used books = $ 1,446
Ahmed to receive double amount of Faisal
Walid to receive triple amount of Faisal
2. How much does each one receive?
- Let x to represent the amount Faisal to receive
- Let 2x to represent the amount Ahmed to receive (double amount of Faisal)
- Let 3x to represent the amount Walid to receive (triple amount of Faisal)
Therefore, we have:
x + 2x + 3x = 1,446
6x = 1,446
x = 1,446/6
x = 241 ⇒ 2x = 482 ⇒ 3x = 723
<u>Faisal will receive $ 241, Ahmed will receive $ 482, and Walid will receive $ 723. </u>
8/9
O=16H
H+H+O=water
18H =water molecules
so u can see ratio 16H/!8H=8/9
