1 is the gcf of 21 and 40
Sampling bias occurs when some members of a population are systematically more likely to be selected in a sample than others. From this definition,
For sample 1, Every fifth person who enters Little Casesars Arena for a Red Wings game. This is not biased because no person is more likely to be selected than another
For sample 2, Every tenth name in the phone. This is also not biased
because no person is more likely to be selected than another
Answer:
Step-by-step explanation:
Start by multiplying both sides by 3 to get x ≥ -18
And that's it! Last option is the one you want.
Answer:
A and C
Step-by-step explanation:
A) y = (1/2)x + 2 {Compare with y =mx +b}
slope = (1/2)
C) y = -2x + 4
Slope = -2
![\dfrac{1}{2}*-2 = -1](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7D%2A-2%20%20%3D%20-1)
When product of two slopes is (-1), then the lines are perpendicular.
Answer:
n=12
Step-by-step explanation:
3.3(n-8)-n=1.2
Distribute
3.3n -26.4 -n = 1.2
Combine like terms
2.3n -26.4 = 1.2
Add 26.4 to each side
2.3n -26.4+26.4 = 1.2 +26.4
2.3n = 27.6
Divide each side by 2.3
2.3n/2.3 = 27.6/2.3
n=12