Answer:
x = -1 and y = 2 and z = 1
Step-by-step explanation:
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https://www.wolframalpha.com/widgets/view.jsp?id=83d5da9f6682ad1b6002473f314c3b4f
Answer: 1/4
Step-by-step explanation: Anything to a negative power is the same as the reciprocol to the absolute value of the power
0.7002 = about 1