what is the standard deviation of the normal distribution that approximates a binomial distribution consisting of 119 trials with a probabilit y of .7 success?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).