<span>Standard deviation shows the distribution present in a set. Range can be used to approximate this property.
Therefore, Set b (100, 140, 150, 160, 200 10, 50, 60, 70, 110) has the largest standard deviation because it has a range of 190 (i.e. 200 - 10)</span>
Answer:
X=2
Step-by-step explanation:
20x+40=80
20x+40-(80)=0
20x-40=0 20x=40
x=40/20
X=2
Answer:
y - 5 = 6(x + 9)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = 6 and (a, b) = (- 9, 5), thus
y - 5 = 6(x - (- 9)), that is
y - 5 = 6(x + 9)
Write the equations:
8x-10y=20
-7x+10y=20
Add them using elimination
x=40
Now solve for y
8(40)-10y=20
10y=300
y=30
So there you have it: x=40, y=30.
