Stella mixed 20 ml of cranberry juice with 30 ml of blackberry juice. she then added another 15 ml of cranberry juice. find the ratio of the amount of carnberry juice to amount of blackberry juice in the end.

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Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z

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).