7 2/3 + 8 5/6 = 7 4/6 + 8 5/6
7+8=15 4/6 + 5/6 = 1 3/6
15 3/6 simplified is 15 1/2
A=3B
4.35A+5.40B=780.95
Substitute 3B into A for the second equation:
4.35(3B)+5.40B=780.90
13.05B+5.40B=780.90
18.45B=780.90
B=42.33
Plug into equation 1:
A=3B
A=3(42.33)
A=126.98
Answer:
(-1,2) , (2,-1), (2,-1) , (-2,1)
Step-by-step explanation:
-5 x 0.2=-1
5 x 0.2=1
10 x 0.2= 2
-10x 0.2=-2
The answers is B.............
Part A: The school with the lowest value of σ is High School B. This also is the school with the lowest IQR.
Part B: The highest mean is that of High School C, which has average attendance 11 more than the next lower school (A).
