Ask Experts Questions for FREE Help !
Ask
    anne21's Avatar
    anne21 Posts: 9, Reputation: 1
    New Member
    		  
    #1

    Oct 23, 2007, 06:46 PM
    Quadratic function
    I have another question! I really am lost? I don't get those..
    Chris cuts half a rectangular lawn, 40m by 30m by moving strips of equal width around perimeter. Jerri cuts the small rectangle left How wode a strip does Chris cut so that they share equally?

    Help!
    terryg752's Avatar
    terryg752 Posts: 197, Reputation: 4
    Junior Member
    		  
    #2

    Oct 23, 2007, 10:11 PM
    Suppose the width of strip is x

    Then length of inner rectangle = 40 - 2x, width = 30 - 2x

    Hence area of inner rectangle = (40 - 2x) (30 - 2x)

    total area = 40 times 30 = 1200

    Hence area of the stripped part = 1200 - (40 - 2x) (30 - 2x)

    The two are equal:

    1200 - (40 - 2x) (30 - 2x) = (40 - 2x) (30 - 2x)

    Solve this equation to get x
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Quadratic function-word problems [ 2 Answers ]

Dieter makes a journey of 430 km, traveling 160 km by bus and 270 km by car. If the car averages 10km/h faster than the bus and the whole journey takes 5h, what is the speed of the car? I don't get the question.. can anyone help me?? :)

Quadratic Functions [ 1 Answers ]

Hi, I am a first time user so hope I am doing this correctly. The original home was H(t)=-16t(squared)+1450. I came up with [-16(1)squared + 1450 + 16 (0)squared - 1450 / 1 = -16. I am pretty sure the answer is correct however can't figure out how to plug it into a TI-83 to graph it. Thanks,

Quadratic equations [ 2 Answers ]

1.paul rode his motorbike for X hours at an average speed of (30x + 5)km/h. if the total distance travelled was 385km find his average speed for the jorny? solve this question by using quadratic equations formula.:)

Quadratic formula [ 5 Answers ]

Hey I need some help with this question; A tank can be filled in 6 hrs using two pipes. The larger pipe alone would fill it 5 hrs sooner than the smaller pipe alone. How long would each pipe alone take?

Quadratic Equation [ 1 Answers ]

Pick out the X and Y coordinates of the vertex from the equation y=x^2+12x-7 Thank you.

View more questions Search