QUESTION IMAGE
Question
find the value of ( x ), ( y ), and ( z ) in the parallelogram below.
(there is a parallelogram image with angles labeled: ( 95^circ ), ( (z + 1)^circ ), ( (7y - 10)^circ ), ( (-9x - 5)^circ ))
answer attempt 1 out of 2
( x = square ) ( y = square ) ( z = square )
Step1: 利用平行四边形邻角互补
平行四边形中,邻角之和为\(180^\circ\),已知一个角为\(95^\circ\),其邻角为\((-9x - 5)^\circ\),所以\(95 + (-9x - 5)=180\)。
化简得:\(90 - 9x = 180\),移项得\(-9x = 180 - 90 = 90\),解得\(x = -10\)。
Step2: 利用平行四边形对角相等
平行四边形中,对角相等,\(95^\circ\)的对角为\((7y - 10)^\circ\),所以\(7y - 10 = 95\)。
移项得\(7y = 95 + 10 = 105\),解得\(y = 15\)。
Step3: 利用平行四边形邻角互补
\(95^\circ\)的另一个邻角为\((z + 1)^\circ\),所以\(95 + (z + 1)=180\)。
化简得\(z + 96 = 180\),移项得\(z = 180 - 96 = 84\)。
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\(x = -10\),\(y = 15\),\(z = 84\)