We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+8
87
1
avatar+673 

Help me please on this

 May 25, 2019
 #1
avatar+102372 
+1

The area =  L x W   =  9

 

(x + 2) * ( 2x + 3)  = 9  simplify

 

2x^2 + 4x + 3x + 6 = 9

 

2x^2 + 7x - 3  = 0     

 

Using the quadratic formula to  find both solutions

 

[ - 7  ± √ [ 7^2 - 4(2)(-3) ] ]               -7  ± √[ 73]

_____________________  =    ______________     take the positive solution  ⇒ x ≈ .386 ft

             2 (2)                                          2(2)

 

So   the dimensions are =   (.386 + 2)  = 2.386 ft    x  (2(.386) + 3) = 3.772 ft

 

The perimeter =   2 [ 2.386 + 3.772 ]  ≈  12.316 ft

 

 

cool cool cool 

 May 25, 2019

29 Online Users

avatar
avatar