Answer:
x = 59.4 ft
y = 84.18ft
Step-by-step explanation:
The cost of exterior walls is $150 per linear foot.
The cost of interior walls is $100 per linear foot.
xy = 5000
y = 5000/x
For the exterior walls, we have 2(x+y)(120)
For the interior wall, we have 100x
The cost function = C
C = 2(x+y)(120) + 100x
C= 240(x+y) + 100x
= 240x + 240y + 100x
= 340x + 240y
Recall that y = 5000/x
C = 340x + 240(5000/x)
C = 340x + 1200000/x
Differentiate C with respect to x
C'(x) = 340 - 1200000/x^2
= (340x^2 -1200000) / x^2
To minimize cost C'(x) = 0
(340x^2 -1200000) / x^2 = 0
340x^2 -1200000 = 0
340x^2 = 1200000
x^2 = 1200000/340
x = √1200000/340
x = 59.4 ft
Recall that y = 5000/x
y = 5000/59.4
y = 84.18 ft
Answer:
I cannot see it well
Step-by-step explanation:
Both 25x and 22x + 9 have the same answers. So you set those two equal to each other.

Subtract 22x from both sides.

and you're left with this.
Next, divide 3 from both sides.

re-insert 3 into one of the equations.

add up both angles

all angles (for quadrilaterals)added up equals 360.

solve for x. Subtract 150 from both sides.

and divide 2 from both sides

AngleLMN= 105
Answer:
3.8
Step-by-step explanation:
Equation is: 2(8.3)+?+3.8=24.2
I might have gotten the Equation wrong sorry lol
I hope this helps you. Plz mark me as the brainliest.