Which of these is an irrational number ?
a.0
b.1.9
c. √7
d.1/2

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

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