the distance between A(2, 7) and B(x, -1) is 10.Find x.
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the distance between A(2, 7) and B(x, -1) is 10.Find x.
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Answer:
(x-2)'2 +(-1-7)'2 =10'2
(x-2)'2=100-64
(x-2)'2= 36
x-2= 6
x=6+2
x=8
Answer:
Step-by-step explanation:
x1y1=(2,7)
x2y2=(x,-1)
d=10
d=√(x2-x1)²+(y2-y1)²
10=√(x-2)²+(-1-7)²
10=x²-4x+4+64
10=x²-4x+68
10-x²+4x-68=0
-x²+4x-58=0
x²-4x+58=0