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09-09-2014
Mathematics

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Multi-step K is the midpoint of JL, JL=4x-2, and JK=7. Find x, KL, and JL

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Аноним Аноним

09-09-2014

If K is midpoint of JL then JK = 0.5JL

JL = 4x - 2; JK = 7

The equation:
0.5(4x - 2) = 7
2x - 1 = 7 |add 1 to both sides
2x = 8 |divide both sides by 2
x = 4

JL = 4(4) - 2 = 16 - 2 = 14

KL = JK = 7

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