find the value of x,if the distance between the point (x,-2) and (7,7) is 15
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Answered by
1
The value of x is either 7 or -5. Step-by-step explanation: It is given that distance between two points (x, 7) and (1, 15) is 10.
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Answered by
1
Step-by-step explanation:
(x-7)² + (-2-7)² = 15²
x²+49 - 14x +81 = 225
x²-14x - 95 = 0
x²-19x + 5x -95 =0
(x+5)(x-19) = 0
x= -5, 19
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