Question

Find the value of a,if the distance between the pointsA(-3,-14)andB(a,-5)is

9units.​

Answer 1

Step-by-step explanation:

the value of a is -3

Step-by-step explanation:

Distance between two points (x1,y1) ( x2,y2) is :

=√(x2-x1)²+(y2-y1)²

here x1= -2

y1= -14

x2=a

y2=-5

Distance between two points is :

=√[(a+3)²+(-5+14)²] =9

squaring on both sides.

(a+3)²+81=81

(a+3)²=0

(a+3)(a+3)=0

a+3=0

a= -3

Answer 2

Answer:

ur=under root

Step-by-step explanation:

9=ur a+3 + ur -5+14

I did this question in my nb

a=-3