find x , if distance (x,7) and (1,15) is 10
Answers
Answered by
1
Answer:
-5 and 7
Step-by-step explanation:
- √((x-1)^2+(7-15)^2)=100
- (x-1) ^2+(-8)^2=100
- after solving x=-5 and 7
Answered by
2
Answer:
Step-by-step explanation:
By Distance formula=√(x2-x1)^2+(y2-y1)^2=10
√(1-x)^2+(7-15)^2=10
Squaring both sides
(1-x)^2+(-8)^2=100
1+x^2-2x+64=100
1+x^2-2x=36
X^2-2x-35=0
X^2-7x+5x-35=0
X(x-7)+5(x-7)=0
(X+5)(x-7) =0
X=-5,X=7
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