Saved Bookmarks
| 1. |
Given A= (3,1) and B = (0,y - 1) find y if AB = 10 |
|
Answer» y=(2±√91)Step-by-step EXPLANATION:A= (3,1) and B = (0,y - 1) AB²= ( 3-0)² { 1-y+1)²100=9+(2-y)²91=4-4y+y²y²-4y-87=0y={ 4±√16+87*4) } /2={ 4±√16+87*4) } /2=(4±√364)/2Y=(2±√91) |
|