In the accompanying diagram PA is tangent to circle 0 at A if CN=12 and PB=4 what is the length of PA?
1 answer:
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30% of number A means
similarly, 40% of number B means
These must be equal, so we have
Multiply both sides by 10 to get
So, you can choose any number for A, and then you multiply it by 4/3 to get B. There are infinitely many solutions to this equation.