SOLUTION: This problem was given by the instructor in a seperate workbook & is not in my book. I take this class via Distance Learning at UGA, so I don't really see a teacher.
"A closed rec
Algebra.Com
Question 152917This question is from textbook College Algebra
: This problem was given by the instructor in a seperate workbook & is not in my book. I take this class via Distance Learning at UGA, so I don't really see a teacher.
"A closed rectangular box with a surface area of 28 sq. inches is to be designed. The design of the box requires that the length of the box is 2 times the width, and the depth must be 4 inches. Find the length and width of the box."
I have tried to fit this into the formula for surface area, but I just can't figure this out.
This question is from textbook College Algebra
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let x=width, so 2x=length
the surface area is 2[{length)(width)+(length)(depth)+(width)(depth)]
28=2[2x^2+8x+4x] __ dividing by 4 __ 7=x^2+6x __ subtracting 7 __ 0=x^2+6x-7
factoring __ 0=(x+7)(x-1)
x+7=0 __ x=-7 __ negative value not realistic
x-1=0 __ x=1 __ width=1 __ length=2
RELATED QUESTIONS
simplify sqrt81x^4 My instructor made this problem up it is not in my... (answered by jim_thompson5910)
Given the root 5+2i find all roots of the equation x^3-7x^2-x+87=0
This is my first... (answered by Edwin McCravy)
This problem is form an Algebra 2 workbook.
How does one solve for x with a given... (answered by stanbon)
I'm working a statistic problem and I have gotten up until this point 2.045 over 9 =... (answered by stanbon)
This problem is to graph the Quadratic Function y= -2Xsquared + 4X+1
I have tried this (answered by savvyhush23)
In 1980 the average price of a home in Brainerd County was $100,000. By 1986 the average... (answered by m.hansen)
In a group of 150 students, more students are taking a math class than are taking a... (answered by ankor@dixie-net.com)
The Cape Cod canal is 11 miles long. A passenger boat goes from New York to Boston, via... (answered by ankor@dixie-net.com)
hey i need help with the associative property with this problem in my workbook. it says... (answered by lkwtcnj)