As you can see, 4 of the 24 students don't partecipate in any activity. This clearly implies a ratio of 4:24, or 1:6.
We could infer that this ratio holds for the whole school, or even for all the boys and girls of that age.
That's the point of surveys and inferring: you gather data about a relatively small group, and then assume that the proportions you have are valid for a much larger group.
That's why it is important that the group that you survey is balanced and unbiased.
Y = n^2 - 20n + 95
y - 95 = n^2 - 20n
y - 95 + 100 = n^2 - 20n + 100
y + 5 = (n - 10)^2
y = (n - 10)^2 - 5
answer is : G(n) = (n-10)^2 - 5
Hello!
375/1000 = 0.375 as a fraction
This can be simplified to 3/8
The answer is 3/8
Hope this helps!
Answer:
<em>1. </em><em>B. $20</em>
<em>2.</em><em>C. 19%</em>
<em>3. </em>D. not here
Step-by-step explanation:
1. info we know
25+45+10+25+15+10 = 130
we need 20 more dollars
2. 25/130 x/100
cross multiply
2500/ 130x
divide
19 = x
3. same steps as last time
35/130 x/100
3500/130x
29%
