Complete Question:
A closed box has a square base with side length L feet and height h feet. Given that the volume of the box is 39 cubic feet, express the surface area of the box in terms of L only.
Answer:

Step-by-step explanation:
Given

Required
Express the surface area in terms of L
Because the box has a square base:
The volume is:

Where

So, we have:

Substitute 39 for Volume


Make H the subject

The surface area (A) of a box with square base is:


Open bracket

Substitute
for H




Answer:
In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols; it is a unifying thread of almost all of mathematics. It includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields.
Step-by-step explanation:
Answer: 2700
Step-by-step explanation:
Y = KX
75 = K × ½
75 ÷ ½ = K
75/1 × 2/1 = K
K is 150
Y = 150 × 18
-0.625, -0.615, -0.62, 0.125 is your answer. just dived -5/8 and +1/8 and just put them in order.<span />
Answer:
6,200
Step-by-step explanation:
19-20
307-310
310 x 20= 6,200 or 20 x 310= 6,200