Carlos has four notes in his wallet: $5, $10, $20 and $50. He takes out two notes at random. a There are six possible pairs of notes. List them.
b Find the probability that:
i one of the notes is $5 ii the total value of the notes is more than $50.

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What is the prime factorization of 23 ?me with this question

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212