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Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

At school 460 of the students walk to school the number of students who take public transit is 20% of the number of students who walk. how many students take public transit

Solve the equation for x by graphing.2^x – 4 = -4^x + 4