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Given that a and b are real numbers such that -3 ≤ a ≤ 2 and -1 ≤ b ≤ 4, and values for a and b are chosen at random, what is the probability that product a*b is positive?

 Apr 30, 2022
 #1
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Here is a graph. The probability is the area of the shaded region over the area of the total region [ABCD]. 

 

Can you solve it with this picture?

 

 Apr 30, 2022

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