Answer:
the answer would be number 3 or 1 :) if I am correct
Answer:
length of the base = 9 ft
and height of the shed = 7 ft
Step-by-step explanation:
given data
volume = 567 cubic feet
base costs = $2 per square foot
roof costs = $5 per square foot
sides costs $4.50 per square foot
solution
we take here length of the base = x ft
and height of the shed = y ft
so Volume will be express as
volume = x²× y
567 = x² × y
y =
and
we know cost of material is express as here
cost of material = cost of base + cost top + cost 4 side ..................1
put here value
cost = x²(2) + x²(5) + 4xy (4.5)
cost = 7x² + 18xy
put here y value
cost = 7x² + 18 x (
)
differentiate and we get
C' = 14x -
we put here C' = 0 and we get
14x -
= 0
solve it we get
x = 9 ft
and
y =
y = 7 ft
Answer:
Step-by-step explanation:
This is what I got
they give you 8x + 4y +6 <70
they say he buys 4 salads and x is salads
so now you have 8(4) + 4y +6<70=
32 +4y +6 <70
38+ 4y<70
4y<32
32/4 = 8 y = 8 Drinks maximum
double check
Drinks: 8 x 4 = 32
Salads: 4 x 8 = 32
32 +32+6 = 70