Which number is irrational?

a)3/4

b)3.125

c)7.9
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d)√2
2
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The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Identify the number 127 as a rational or irrational. explain