Let's pick one person at random and call it the 'first'.
That person shakes hands with 29 other classmates.
Take another person different from the first, we'll call him the 'second'. Since he has already shaken hands with the first, he shakes hands with 28 other classmates.
The 'third' person will likewise shake hands with 27 other classmates, and so on.
Hence, the total number of handshakes is 29+28+27+...+2+1 = 29*30/2=435 handshakes
Answer:
x = 28
Step-by-step explanation:
15 + 3x = 99
-15. -15
<u>3x</u> = <u>84</u>
3. 3
x = 28
A mercantilism system sought to enrich the country by restraining imports and encouraging exports. So I believe ur answer is gonna be B.
Answer:
1) matched samples
2) single sample
3) independent samples
Step-by-step explanation:
1) couples were taken and their behaviors matched
2) only one sample was used
3) two different samples were used and their average compared.
