M = y2-y1/x2-x1
M = 3-10/7-4
M = -7/3
All you have to do is subtract 18.5 from 32 = 13.5 and then divide that number by 2 for each side of the poster, 13.5 / 2 = 6.75 inches
Answer:
he added wrong
Step-by-step explanation:
(x,y)=(x+4,y+7)
(4,5)
(4+4, 5+7)
(8, 12)
Answer=21.4%
75 x
____=___
350 100
cross multiply
350x=7500
divide both sides by 350
x=<span>21.4285714286
round to the nearest tenth
x=21.4%</span>
Material=wall+2*side and material is 40 ft so:
40=w+2s
w=40-2s
Area=ws, using w from above we get:
A=(40-2s)s
A=40s-2s^2
dA/ds=40-4s and d2A/ds2=-4
Since d2A/ds2 is a constant negative acceleration, when dA/ds=0, A(s) is at an absolute maximum.
dA/ds=0 when 4s=40, s=10 ft
And since w=40-2s, w=20 ft
So the dimensions of the pen are 20 ft by 10 ft, with the 20 ft side being opposite the wall. And the maximum possible area is thus 200 ft^2
