Answer:


Step-by-step explanation:
For this case we have the following data given:
2.3 3.1 2.8
1.7 0.9 4.0
2.1 1.2 3.6
0.2 2.4 3.2
Since the data are assumedn normally distributed we can find the standard deviation with the following formula:

And we need to find the mean first with the following formula:

And replacing we got:

And then we can calculate the deviation and we got:

Answer:
Graph A is postive and Linear! I know this because I was in algebra one!
Step-by-step explanation:
Graph B and C are Negative and Graph D is not Linear!!!!!
< ABE and < CBD.
Adjacent angles are two angles that have a common vertex and a common side but do not overlap.
Answer:
50 but if its not an estimate 50.6 i would try 50 first
Step-by-step explanation:
also brainiest plz
Answer:
Step-by-step explanation:
Note that the two equations are equivalent.
2y = 14-2x can be rearranged to y = -x+7, which is the same as the second equation. What you're looking is one line on top of the other.
Every shared point is a solution. Since there are infinitely many points on a line, and these lines share every point, there are infinitely many solutions.