What is the probability that an interaction lasts longer than 4 minutes with a mean of 3 minutes and a standard deviation of 0.4 minutes

Write the equation of the circle centered at (10,-2) with radius 2.

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).

Write an expression that represents the sum of 7 and x