- The cost of living?

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Write the value of stars and smilies ,if 190+78=200+stars=smilies? (4-x)/(x-5) > 1/(1-x)? If an electric skillet has 6 numbers what is 3 in degrees? I have been studying differential equations I am about to take the practice section for differential equations how long can i give my self ? Prove that tanA=cosec2A-cot2A.Deduce the of value tan(45/2)?