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ATQ, Total age of 25 students = 25 × 15 years = 375 years. New average age after 5 students leave = 14 years. Total age of 20 students = 20 × 14 years = 280 years. Total age of the 5 students who left = 375 − 280 years = 95 years. Average age of the 5 students who left = 95/5 years = 19 years.
If 10x2 – 6xy+y² – 4x+4= 0, then find the value of (3x+2y).
If x =7+4√3. then find the value of x +1/ x
In Δ ABC, ∠ B= 68° and ∠ C 32°. Sides AB and AC are produced to points D and E, respectively. The bisectors of ∠ DBC and...
Find the common factor of (x2 - 4x - 12) and (x2 - 14x - 32).
Given that x = 80, y = -35 and z = -45, Determine the value of [(x³ + y³ + z³)/10³]
Find the value x2 + y2, if xy = 13 and x + y = 7.
If a + b = 56 and (a – b)² = 496, find the value of the product of a and b.