Solve each of the quadratic equations 0=5x^2-2x+6

Step-by-step explanation:

1. You can solve the quadratic equation by completing the square, as following:

- The leading coefficient must be 1, therefore, you need to divide the equation by 5:

- Substract at both sides:

- Divide the coefficient of by 2 and and square it:

- Add it to both sides:

- Then:

- Knowing that :

many reason,

step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours