A solid line would represent points on the graph that actually are included in the solution, while points that lie on dash lines aren’t included in the solution
Answer:
dc/dx = 0 when x = 20. hence fence is 20×40
Step-by-step explanation:
Given data:
Rectangular Area = 800 ft^2
three side material cost = $5 per ft
fourth side material cost is $15 per ft
let expensive side is x and other dimension assume to be y
Then cost is c
c = 5(x+ 2y) + 15 x
xy = 800, so y = 800/x
c =5(x+ 1600/x^2) + 15x
for minimum when dc/dx = 0





(2x-40)(2x+40) = 0
x = 20
dc/dx = 0 when x = 20. hence fence is 20×40
Answer:
145°
Step-by-step explanation:
x + 35° = 180° {being linear pair }
x = 180° - 35°
x = 145°
Hope it will help :)
Answer:
2.5 inches
Step-by-step explanation:
(1/4) x 10 = 2.5
or .25 x 10 = 2.5
How to solve Problem:
10.5÷1.5
Move both decimals all the way to the right
105÷15
Then solve from there. I'll give you a hint, It's a whole number.