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  1. M

    Easy precal question

    I'm guessing that any "0's with slanted lines through them" would be the greek letter theta, which looks like this: \theta. Beyond that, I really cannot help you unless you show some work and show where you got stuck. I'm sure that your pre calc book contains all the necesary trig...
  2. M

    Conditional Probability Traffic light question

    In your problem statement: P(r_1 )=0.55 and P(g_2 |g_1 )=0.75 but I don't know how you got your answer because .55*.75 = .4125, though I do agree that .33 is very close to the answer, depending on how you round the decimal.