The roots of any quadratic equation is given by using: x = [-b +/- sqrt(-b^2 - 4ac)]/2a. Write down the quadratic in the shape of ax^2 + bx + c = zero. If the equation is in the shape y = ax^2 + bx +c, honestly replace the y with zero. that is achieved because the roots of the equation are the values where the y axis is same to 0.
Step-by-step explanation: proportional means corresponding in size or amount to something. However, the number of her sit-ups isn't consistent, so it isn't proportional to the time she spends doing them.
