A sphere of radius r has the same volume as that of a cone with a circular base of radius r. Find the height of the cone..
if α and β are the zeros of the polynomial p(x) = kx² - 30x + 45 and α + β = αβ, then the value of k is :
A) -2/3 B) -3/2 C) 3/2 D) 2/3
