Answer:
Step-by-step explanation:
Represent the volume of the box with V and the dimensions with l, b and h.
The volume (V) is:
Make h the subject of the formula
The surface area (S) of the aquarium is:
Where lb represents the area of the base (i.e. slate):
The cost (C) of the surface area is:
Substitute for h in the above equation
Differentiate with respect to l and with respect to b
To solve for b and l, we equate both equations and set l to b (to minimize the cost)
By comparison:
becomes
Cross Multiply
Solve for l
Recall that:
Also recall that:
Apply law of indices
The dimension that minimizes the cost of material of the aquarium is:
Answer:
14 in^2.
Step-by-step explanation:
Area = 1/2 * height * base
= 1/2 * 4 + 7
= 14.
Answer:
Step-by-step explanation:
Answer:
The choose C. 24x+6y
Step-by-step explanation:
I hope I helped you^_^
Answer:
Step-by-step explanation:
1)22
2)40
3)44
4)62
5)26
6)55
7)29
8)45
9)The picture is not clear
10) 52