+0  
 
0
238
1
avatar

The length of a rectangle is 7 inches more than 5 times its width. The area of the rectangle is 16 square inches. What is the width?

 Jul 27, 2022
 #1
avatar+129845 
+1

W =  W

L = 5W + 7

 

LW  =  area

 

W ( 5W + 7)  =  16

 

5W^2 + 7W   = 16

 

5W^2 + 7W - 16  = 0

 

                -7   +  sqrt  [ 7^2  - 4*5* -16 ]              -7  +  sqrt [ 369]               

W =     ___________________________ =   ________________ ≈ 1.22 in 

                           2(5)                                                 10

 

cool cool cool

 Jul 27, 2022

2 Online Users

avatar
avatar