Answer two questions about Systems A
AA and
B
BB:
System
A
AA
start text, end text System
B
BB
{
8
x
−
3
y
=
0
2
x
+
7
y
=
3

⎩
⎪
⎪
⎨
⎪
⎪
⎧


8x−3y=0
2x+7y=3


{
8
x
−
3
y
=
0
8
x
+
28
y
=
12

⎩
⎪
⎪
⎨
⎪
⎪
⎧


8x−3y=0
8x+28y=12


1) How can we get System
B
BB from System
A
AA?

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The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms