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What is the length of the line y equals 17 -3x that intersects with the curve y equals x squared plus 2x -7 showing brief details of your work?
Wiki User
∙ 12y ago
If: y = x2+2x-7 and y = 17-3x
Then: x2+2x-7 = 17-3x
And: x2+5x-24 = 0
When factored: (x+8)(x-3) = 0
Therefore: x = -8 and x = 3
Points of intersection: (-8, 41) and (3, 8)
Length of line: (3--8)2+(8-41)2 = 1210 and the square root of this is the length of the line which is 11*sq rt of 10 or about 34.785 units to 3 d.p.
Wiki User
∙ 12y ago
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What equals 121 when its squared?
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How do you use the intersect feature on a graphing calculator to find the solution of something like negative X squared plus 5 equals X cubed?
Draw the graph of negative X squared plus 5 minus X cubed and find the values of x where it intersects the x axis.
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4
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