72,130 questions

69,644 answers


46,783 users

MathHomeworkAnswers.org is a free math help site for student, teachers and math enthusiasts. Ask and answer math questions in algebra I, algebra II, geometry, trigonometry, calculus, statistics, word problems and more. Register for free and earn points for questions, answers and posts. Math help is always 100% free.

Note: This site is intended to help students and non-students understand and practice math. we do not condone cheating. Users attempting to abuse the system will be permanently blocked from further use.

Most popular tags

algebra problems solving equations word problems calculating percentages geometry problems calculus problems fraction problems trigonometry problems rounding numbers simplifying expressions solve for x math problem order of operations pre algebra problems evaluate the expression algebra slope intercept form factoring probability please answer this queastion as soon as possible. thank you :) please help me to answer this step by step. polynomials statistics problems plz. give this answer as soon as possible solving inequalities how to find y intercept algebra 2 problems logarithmic equations equation of a line solving systems of equations by substitution help sequences and series word problem dividing fractions greatest common factor graphing linear equations square roots geometric shapes substitution method long division 6th grade math least common multiple factoring polynomials solving systems of equations http: mathhomeworkanswers.org ask# solving equations with fractions standard form of an equation function of x ratio and proportion least to greatest dividing decimals proving trigonometric identities algebra problem trig identity solving equations with variables on both sides help me!! ( precalculus problems solving systems of equations by elimination help me slope of a line through 2 points domain of a function college algebra algebraic expressions trinomial factoring distributive property i need help with this factors of a number solving quadratic equations perimeter of a rectangle slope of a line division fraction word problems 8th grade math exponents limit of a function differentiation greater than or less than equivalent fractions differential equation how to find x intercept elimination method algebra 1 hw help asap geometry 10th grade simplifying fractions area of a triangle inverse function . 7th grade math geometry area of a circle integral simplify place value parallel lines standard deviation solving triangles fractions solving linear equations width of a rectangle circumference of a circle percentages systems of equations containing three variables mixed numbers to improper fractions scientific notation problems number of sides of a polygon zeros of a function algebra word problems lowest common denominator prime factorization solving systems of equations by graphing diameter of a circle length of a rectangle story problems quadratic functions area of a rectangle mathematical proofs dividing polynomials derivative of a function 5th grade math vertex of a parabola calculus homework converting fractions to decimals evaluating functions algebra 1 integers equation finding the nth term range of a function combining like terms ordered pairs calculators greatest to least perpendicular lines least common denominator unit conversion algebra 2 complex numbers solve for y radius of a circle ) solving radical equations slope what is the answers? area word problems functions calculus problem because i don't understand 4th grade math calculate distance between two points multiplying fractions common denominator statistics ratios set builder notation simplifying radicals binomial expansion percents help me please and show how to work it out math homework round to the nearest tenth geometry word problems midpoint of a line absolute value significant figures product of two consecutive numbers equation of a tangent line radicals #math show work () median solve show every step to solve this problem adding fractions please answer this question as soon as possible. thank you :) divisibility rules graphing functions graphing math pre-algebra problems roots of polynomials factor by grouping 1 - improper fractions to mixed numbers percentage place values number patterns ? subtracting fractions (explain this to me) volume of a cylinder decimals rational irrational numbers how to complete the square simultaneous equations numbers derivatives expanded forms solving equations with variables maths http: mathhomeworkanswers.org ask?cat=# please help = multiplying polynomials sets http: mathhomeworkanswers.org ask# need help solving quadratic equations by completing the square implicit differentiation integration divide mixed numbers surface area of a prism average rate of change algebra1 pemdas angles age problem rounding decimals comparing decimals solving trigonometric equations surface area of a cube logarithms trigonometry #help perimeter of a triangle 9th grade math matrices dividing geometry problem rounding to the nearest cent reducing frations to lowest terms arithmetic sequences factor how do you solve this problem in distributive property compound interest simplifying trigonometric equation using identities direct variation chemistry none mean lcm answer solve algebra equation probability of an event 5th grade math problems

HELP ME!!!!!!!!!!!! I'M STUPID

Farmer Fred wants to construct a rectangular chook pen, using his barn for one of the sides. The other three sides will be constructed using only 80 metres of chicken wire.

Fred had decided to build a pen that was 10 metres wide and 60 metres long, an enclosure of 600 m2, until his wife Francis pointed out that dimensions of 15 metres and 50 metres would enclose a larger area of 800 m2.


How long and how wide should the pen be if Fred wants to enclose as much land as possible? ( Write an algebraic function that will determine the area of the pen in terms of its width and use it to find the answer)

asked Oct 20, 2012 in Word Problem Answers by anonymous

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:

To avoid this verification in future, please log in or register.

1 Answer

1. maebee yu luv tu be frustrated, thats wot puter is for

2. ?? "chook pen" ??, wot du chook look like?

3. 15&50=750, not 800

4. I take it, yu wanna find biggest area yu kan get with 80 meters for 3 sides

me no anser: square...eech side=80/3, area=711.1111111...

5. yu don trust me?

length+2*wide=80, so leng=80-2*wide



tu find max or min, take derivativ...80-4wide

& set it tu 0...4(20-wide)=0

or wide=20, leng=40, area=800

the mistreeus math gremlins hit agin
answered Oct 20, 2012 by anonymous

Related questions

0 answers 104 views
104 views asked Mar 26, 2013 in Trigonometry Answers by anonymous
1 answer 49 views
49 views asked Jan 13, 2013 in Geometry Answers by anonymous
1 answer 545 views
545 views asked Mar 4, 2012 in Geometry Answers by anonymous
1 answer 48 views
48 views asked Feb 19 in Other Math Topics by anonymous
2 answers 51 views
51 views asked Aug 14, 2013 in Other Math Topics by bhuvana
1 answer 112 views
112 views asked Apr 30, 2013 in Geometry Answers by anonymous