Find the value of a,if the distance between the pointsA(-3,-14)andB(a,-5)is
9units.
Answers
Answered by
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
Answered by
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
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