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okok well i was just doing my tutor hw and i stumbled upon an unfamiliar question.. not quite sure how to work it out. Any help is much appreciated x] Show that the line 3x+4y+10=0 is a tangent to the circle with centre at the origin and radius 2 units.

Hai again everyone I was wondering... Is it better to be ranked in the top 10 at a catholic school or somewhere in the 60s at a selective school? Because I changed school from one (ranked 99th '07) to a selective school ( ranked 28th '07) Theres no official ranking for anyone yet, but im...