8+4-{-2-[5+(2-7)-(5-15)+20]+6-3}+8
2 answers:
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Answer:
option c, x = 3
Step-by-step explanation:
Given:
- f(x) = 27
- f(x) =
Since both equal f(x) they must be equivalent as well,
Apply exponent rule, 3 x 3 x 3 = 27
hence x = 3
Answer: I do not understand the options you gave but but cos30º is equal to /2 which is 0.86602540378.