1.

one angle of a seven sided polygon is 138* and each of the other six angles is x* find the value of x​

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Step-by-step explanation:

Answer is:

Q.. If 102y = 25, then 10-y equals:

(a) -1/5, (b) 1/625, (c) 1/50, (d) 1/25, (E) 1/5

Solution:

102y = 25

(10y)2 = 52

10y = 5

1/10y = 1/5

10-y = 1/5

Answer: (e)



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