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14 February, 23:25

A pair of vertical angles have measures (2z+43) ° and (-10z+25) °. What is the value of z?

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  1. 15 February, 03:01
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    For finding z, (2z+43) ° = (-10z+25) °

    2z+43 = - 10z+25 2z+10z = 25 - 43, 12z = - 18, z=-18/12 = - 3/2
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