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Thespeedofsoundinairdepends on the density of air and the density of air dependsonthetemperature.Thespeedofsound is unaffected by pressure. If the atmospheric pressure changes, the speed of sound in air remains constant.
If the roots of the quadratic equation 6m² + 7m + 8 = 0 are α and β, then what is the value of [(1/α) + (1/β)]?
A sum of money grows to Rs. 7,500 in 5 years and Rs. 8,250 in 7 years under simple interest. What is the original principal amount?
